CA2203082A1 - Anti-cariogenic activity of erythritol - Google Patents
Anti-cariogenic activity of erythritolInfo
- Publication number
- CA2203082A1 CA2203082A1 CA002203082A CA2203082A CA2203082A1 CA 2203082 A1 CA2203082 A1 CA 2203082A1 CA 002203082 A CA002203082 A CA 002203082A CA 2203082 A CA2203082 A CA 2203082A CA 2203082 A1 CA2203082 A1 CA 2203082A1
- Authority
- CA
- Canada
- Prior art keywords
- erythritol
- cariogenic
- sugar
- sweetener
- composition
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Abandoned
Links
- 239000004386 Erythritol Substances 0.000 title claims abstract description 172
- UNXHWFMMPAWVPI-UHFFFAOYSA-N Erythritol Natural products OCC(O)C(O)CO UNXHWFMMPAWVPI-UHFFFAOYSA-N 0.000 title claims abstract description 172
- UNXHWFMMPAWVPI-ZXZARUISSA-N erythritol Chemical compound OC[C@H](O)[C@H](O)CO UNXHWFMMPAWVPI-ZXZARUISSA-N 0.000 title claims abstract description 172
- 235000019414 erythritol Nutrition 0.000 title claims abstract description 172
- 229940009714 erythritol Drugs 0.000 title claims abstract description 172
- 230000000170 anti-cariogenic effect Effects 0.000 title claims abstract description 27
- 235000000346 sugar Nutrition 0.000 claims abstract description 39
- 230000001013 cariogenic effect Effects 0.000 claims abstract description 33
- 235000003599 food sweetener Nutrition 0.000 claims abstract description 31
- 239000003765 sweetening agent Substances 0.000 claims abstract description 31
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- 238000002360 preparation method Methods 0.000 claims abstract description 9
- 239000000203 mixture Substances 0.000 claims description 53
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- FBPFZTCFMRRESA-JGWLITMVSA-N D-glucitol Chemical compound OC[C@H](O)[C@@H](O)[C@H](O)[C@H](O)CO FBPFZTCFMRRESA-JGWLITMVSA-N 0.000 claims description 32
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- 150000001720 carbohydrates Chemical class 0.000 description 5
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- 244000215068 Acacia senegal Species 0.000 description 4
- FERIUCNNQQJTOY-UHFFFAOYSA-N Butyric acid Chemical compound CCCC(O)=O FERIUCNNQQJTOY-UHFFFAOYSA-N 0.000 description 4
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- 229920000084 Gum arabic Polymers 0.000 description 4
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- 229940110456 cocoa butter Drugs 0.000 description 4
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- 238000002474 experimental method Methods 0.000 description 4
- 230000005764 inhibitory process Effects 0.000 description 4
- 229910052757 nitrogen Inorganic materials 0.000 description 4
- SXGZJKUKBWWHRA-UHFFFAOYSA-N 2-(N-morpholiniumyl)ethanesulfonate Chemical compound [O-]S(=O)(=O)CC[NH+]1CCOCC1 SXGZJKUKBWWHRA-UHFFFAOYSA-N 0.000 description 3
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 description 3
- FBPFZTCFMRRESA-KVTDHHQDSA-N D-Mannitol Chemical compound OC[C@@H](O)[C@@H](O)[C@H](O)[C@H](O)CO FBPFZTCFMRRESA-KVTDHHQDSA-N 0.000 description 3
- WSFSSNUMVMOOMR-UHFFFAOYSA-N Formaldehyde Chemical compound O=C WSFSSNUMVMOOMR-UHFFFAOYSA-N 0.000 description 3
- 239000007987 MES buffer Substances 0.000 description 3
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- 230000015572 biosynthetic process Effects 0.000 description 3
- 239000008121 dextrose Substances 0.000 description 3
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- 239000000796 flavoring agent Substances 0.000 description 3
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- 235000011187 glycerol Nutrition 0.000 description 3
- 238000004128 high performance liquid chromatography Methods 0.000 description 3
- 239000000594 mannitol Substances 0.000 description 3
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- 230000020477 pH reduction Effects 0.000 description 3
- 235000010603 pastilles Nutrition 0.000 description 3
- 241000894007 species Species 0.000 description 3
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- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 2
- 241000194052 Streptococcus ratti Species 0.000 description 2
- 241000193987 Streptococcus sobrinus Species 0.000 description 2
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- OSWFIVFLDKOXQC-UHFFFAOYSA-N 4-(3-methoxyphenyl)aniline Chemical compound COC1=CC=CC(C=2C=CC(N)=CC=2)=C1 OSWFIVFLDKOXQC-UHFFFAOYSA-N 0.000 description 1
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Classifications
-
- A—HUMAN NECESSITIES
- A23—FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
- A23G—COCOA; COCOA PRODUCTS, e.g. CHOCOLATE; SUBSTITUTES FOR COCOA OR COCOA PRODUCTS; CONFECTIONERY; CHEWING GUM; ICE-CREAM; PREPARATION THEREOF
- A23G1/00—Cocoa; Cocoa products, e.g. chocolate; Substitutes therefor
- A23G1/30—Cocoa products, e.g. chocolate; Substitutes therefor
- A23G1/32—Cocoa products, e.g. chocolate; Substitutes therefor characterised by the composition containing organic or inorganic compounds
- A23G1/40—Cocoa products, e.g. chocolate; Substitutes therefor characterised by the composition containing organic or inorganic compounds characterised by the carbohydrates used, e.g. polysaccharides
-
- A—HUMAN NECESSITIES
- A23—FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
- A23G—COCOA; COCOA PRODUCTS, e.g. CHOCOLATE; SUBSTITUTES FOR COCOA OR COCOA PRODUCTS; CONFECTIONERY; CHEWING GUM; ICE-CREAM; PREPARATION THEREOF
- A23G3/00—Sweetmeats; Confectionery; Marzipan; Coated or filled products
- A23G3/34—Sweetmeats, confectionery or marzipan; Processes for the preparation thereof
- A23G3/36—Sweetmeats, confectionery or marzipan; Processes for the preparation thereof characterised by the composition containing organic or inorganic compounds
- A23G3/38—Sucrose-free products
-
- A—HUMAN NECESSITIES
- A23—FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
- A23G—COCOA; COCOA PRODUCTS, e.g. CHOCOLATE; SUBSTITUTES FOR COCOA OR COCOA PRODUCTS; CONFECTIONERY; CHEWING GUM; ICE-CREAM; PREPARATION THEREOF
- A23G3/00—Sweetmeats; Confectionery; Marzipan; Coated or filled products
- A23G3/34—Sweetmeats, confectionery or marzipan; Processes for the preparation thereof
- A23G3/36—Sweetmeats, confectionery or marzipan; Processes for the preparation thereof characterised by the composition containing organic or inorganic compounds
- A23G3/42—Sweetmeats, confectionery or marzipan; Processes for the preparation thereof characterised by the composition containing organic or inorganic compounds characterised by the carbohydrates used, e.g. polysaccharides
-
- A—HUMAN NECESSITIES
- A23—FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
- A23G—COCOA; COCOA PRODUCTS, e.g. CHOCOLATE; SUBSTITUTES FOR COCOA OR COCOA PRODUCTS; CONFECTIONERY; CHEWING GUM; ICE-CREAM; PREPARATION THEREOF
- A23G4/00—Chewing gum
- A23G4/06—Chewing gum characterised by the composition containing organic or inorganic compounds
- A23G4/10—Chewing gum characterised by the composition containing organic or inorganic compounds characterised by the carbohydrates used, e.g. polysaccharides
-
- A—HUMAN NECESSITIES
- A23—FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
- A23L—FOODS, FOODSTUFFS, OR NON-ALCOHOLIC BEVERAGES, NOT COVERED BY SUBCLASSES A21D OR A23B-A23J; THEIR PREPARATION OR TREATMENT, e.g. COOKING, MODIFICATION OF NUTRITIVE QUALITIES, PHYSICAL TREATMENT; PRESERVATION OF FOODS OR FOODSTUFFS, IN GENERAL
- A23L27/00—Spices; Flavouring agents or condiments; Artificial sweetening agents; Table salts; Dietetic salt substitutes; Preparation or treatment thereof
- A23L27/30—Artificial sweetening agents
- A23L27/33—Artificial sweetening agents containing sugars or derivatives
- A23L27/34—Sugar alcohols
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K31/00—Medicinal preparations containing organic active ingredients
- A61K31/045—Hydroxy compounds, e.g. alcohols; Salts thereof, e.g. alcoholates
- A61K31/047—Hydroxy compounds, e.g. alcohols; Salts thereof, e.g. alcoholates having two or more hydroxy groups, e.g. sorbitol
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K8/00—Cosmetics or similar toiletry preparations
- A61K8/18—Cosmetics or similar toiletry preparations characterised by the composition
- A61K8/30—Cosmetics or similar toiletry preparations characterised by the composition containing organic compounds
- A61K8/33—Cosmetics or similar toiletry preparations characterised by the composition containing organic compounds containing oxygen
- A61K8/34—Alcohols
- A61K8/345—Alcohols containing more than one hydroxy group
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61Q—SPECIFIC USE OF COSMETICS OR SIMILAR TOILETRY PREPARATIONS
- A61Q11/00—Preparations for care of the teeth, of the oral cavity or of dentures; Dentifrices, e.g. toothpastes; Mouth rinses
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S426/00—Food or edible material: processes, compositions, and products
- Y10S426/804—Low calorie, low sodium or hypoallergic
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Food Science & Technology (AREA)
- Polymers & Plastics (AREA)
- Inorganic Chemistry (AREA)
- Veterinary Medicine (AREA)
- Public Health (AREA)
- Molecular Biology (AREA)
- General Health & Medical Sciences (AREA)
- Animal Behavior & Ethology (AREA)
- Epidemiology (AREA)
- Oral & Maxillofacial Surgery (AREA)
- Birds (AREA)
- Nutrition Science (AREA)
- Proteomics, Peptides & Aminoacids (AREA)
- Medicinal Chemistry (AREA)
- Pharmacology & Pharmacy (AREA)
- Emergency Medicine (AREA)
- Seasonings (AREA)
- Acyclic And Carbocyclic Compounds In Medicinal Compositions (AREA)
- Confectionery (AREA)
- Cosmetics (AREA)
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Abstract
The present invention anti-cariogenic activity of erythritol. The invention further discloses the use of erythritol in food preparations as an at least partial replacer of sugar or other cariogenic sweetening agent. Erythritol is used in combination with normally employed sweetening agents and the favourable characteristics of the erythritol are preserved while the amount of erythritol used is much less than what would be needed to replace the sugar completely.
Description
ANTI-CARIOGENIC ACTIVITY OF ERYTHRITOL
Technical Field The present invention discloses the anti-cariogenic activity of erythritol. The invention further discloses the use of erythritol in food preparations as an at least partial replacer of sugar or other cariogenic sweetening agents. Erythritol is used in combination with norrnally employed sweetening agents and the favourable characteristics of the erythritol are preserved. The usefulness of this anti-cariogenic effect is demonstrated in food preparations such as chewing gum, chocolate and candies wherein a part of the sugar, lactose, sorbitol or maltitol is replaced with erythritol.
Background of the invention Polyhydric alcohols are used in food compositions to retain the original quality of the food on ageing and shipping or to obtain a texture or product quality that was not present in the original product. Sorbitol, glycerol, mannitol and other polyols are already used on a large scale as food additives.
Erythritol, a naturally occurring polyol sweetener, has relatively recently become available in significant amounts. Erythritol is used for its capacity to replace sugar while preserving the sweet taste. Erythritol is 60% as sweet as sucrose at the normal use level and is sweeter than mannitol and sorbitol. It is also used because it is excreted unmetabolised and therefore leads to an important calorie reduction.
Apart from the calorie reduction erythritol can also provide the texture of a 'fatty mouthfeel'. Because of this characteristic erythritol is also suitably used as a fat replacer.
Since erythritol is not metabolised it will have little or no effect upon the normal body function. It may therefore be used in foodstuffs designed for people whose metabolizable carbohydrate intake must be restricted due to diabetes or obesity.
' CA 02203082 1997-04-18 Erythritol is also used in sugarless chewing-gum applications. It is known that erythritol is not fermented by bacteria appearing in the mouth flora, and especially by Streptococci, therefore erythritol does not give rise to acidification. This acidification is one of the causing agents of caries. The Streptococci are also responsible for the formation of water-insoluble glucan which in turn forms the dental plaque. The dental plaque will retain microorganisms and therefore also stimulates caries formation.
Products which contain erythritol instead of other sweetening agents have been tested in the so-called Muhlemann test (Imfeld, Th. and Muhlemann, H.R. J, Prev. Dentistry 4 8-14 (1977) and Imfeldt, Th. and Duhamel, L. Revue d'Odonto-stomatologie 9: 27-38 (1980)). This test is based on the intra-oral measurement of plaque pH. In this test a criterium for the indication 'safe for teeth' is developed. A product or composition is called 'safe for teeth' if the pH in the mouth does not drop below 6 after consumption of the product or composition. According to this criterium erythritol is considered as 'safe for teeth'. Replacement of sugar by erythritol therefore reduces the amount of caries to a considerable degree.
All this is known for some time as evidenced by the vast amount of literature covering an ever growing field of potential applications for polyols in general and for erythritol in particular.
Erythritol is commercially produced by fermentation of glucose. Potential fermentation processes are described in European patents EP 0 136 802, EP 0 136 803, EP 0 136 804, EP 0 136 805, EP 0 262 463, EP 0 327 016 and EP 0 327 342. Chemical methods for the production of erythritol are well known and include hydrogenolysis of dialdehyde starch, reduction of formaldehyde and hydrogenolysis of sorbitol.
Erythritol, which is extensively marketed in Japan, is increasingly used as a sugar replacer in such applications as chocolates, candies, pie fillings, soft drinks etc.
European patent application EP 0 009 325 describes the use of erythritol in the form of a sugarless cariostatic composition comprising at least 5~o erythritol. The preferred use of this composition is in toothpaste or chewing gum and it is reported that preferably the sugars are completely replaced with erythritol. Moreover all examples relate to the total replacement of sugar.
' CA 02203082 1997-04-18 European patent EP 0 S11 761 describes instant pie fillings containing erythritol and sorbitol.
European patent EP 0 530 995 describes the application of erythritol or maltitolfor the preparation of low cariogenic and low calorie lozenges.
European patent application EP 0 727 146, which was not pre-published, disclosesa chocolate composition containing erythritol and an amount of maltitol sufficient to mask the cooling effect of erythritol. The chocolate preparations contain no sugar and the application only describes bitter (black) chocolate i.e. chocolate containing no milk powder or lactose.
Among the references relating to the non-cariogenic effect of erythritol the following are specifically pointed out. Kawanabe et al. Caries Res. 26 358-362 (1992) describes the non-cariogenecity of erythritol as a substrate. After studies in which rats were fed diets containing erythritol, sucrose or starch it was concluded that erythritol was not utilized as a substrate for tooth plaque forrnation. Furthermore, Streptococci did not produce lactic acid.
European patent application EP 0 561 089 describes the use of different combinations of hydrogenated mono-saccharides with polysaccharides. No specific mention is made of any special effects observed with erythritol let alone an anti-cariogenic effect of erythritol. Furthermore erythritol is not used in any of the experiments.
US patent 4,518,581 describes the low- or anti-cariogenic properties of isomalto-oligosaccarides. In Table 1 it is demonstrated that erythritol, in an amount of 10% with respect to sucrose, does not inhibit the water-insoluble glucan formation by Streptococcus mutans 6715. Elythritol is therefore not classified as anti-cariogenic according to the criteria developed in this US patent.
One of the major drawbacks of the use of erythritol as a sugar replacer is that it is much more expensive than some of the substances which it replaces. It would therefore be interesting to replace only a part of the sugar by erythritol while at the same time preserving the characteristics of erythritol specifically its non-cariogenic effect.
' CA 02203082 1997-04-18 Summary of the invention The present invention discloses that erythritol has an anti-cariogenic effect.
The present invention further discloses the use of erythritol as a partial replacer of sugar or of other cariogenic sweetening agents. Specifically, the invention discloses the use of erythritol as an anti-cariogenic agent in the preparation of food products, tooth paste and mouth rinse. The invention further disloses the use of erythritol as a sugar replacer in chocolate, specifically in milk chocolate.
The invention further discloses a sugar free non-cariogenic milk chocolate.
Erythritol is used for partial replacement of sugar in different applications and it is demonstrated that the product can still be considered as non-cariogenic.
The present invention further discloses the use of a non-cariogenic combination of erythritol and other sweetening agents such as glucose, lactose, sorbitol, xylitol, maltitol and lactitol.
Brief description of the figures Figure 1 shows the pH development when S. mutans in the in-vitro test medium is incubated with erythritol and with sucrose.
Figure 2 shows the lactic acid production when S. mutans in the in-vitro test medium is incubated with erythritol and with sucrose.
Figure 3 shows the lactic acid production when different Streptococcus strains are incubated with erythritol or glucose.
Figure 4 shows the lactic acid production when different S.mutans strains are incubated with erythritol or glucose.
Figure 5 shows the anti-cariogenic effect of xylitol in combination with sorbitol.
Figure 6 shows the anti-cariogenic effect of erythritol in combination with sorbitol.
Figure 7 shows the total amount of acid produced upon incubation of S. mutans with sorbitol, sorbitol/xylitol and sorbitol/erythritol.
Figure 8 shows the total amount of acid produced upon incubation of S. mutans with lactitol, lactitol/xylitol and lactitol/erythritol.
-Figure 9 shows the pH development when S. mutans is incubated with lactose or milk powder in the presence or absence of Malbit Ch, xylitol or erythritol(ErOH).
Figure 10 shows the total amount of acid produced upon incubation of S. mutans with lactose or milk powder in the presence or absence of Malbit Ch, xylitol or erythritol (ErOH).
Figure 11 shows the pH development when S. mutans is incubated with milk and dark chocolate containing erythritol.
Figure 12 shows the total amount of acid produced upon incubation of S. mutans with milk and dark chocolate containing erythritol.
Detailed description of the invention The present invention discloses that erythritol has an anti-cariogenic effect. For the purpose of the present invention by anti-cariogenic effect is meant that a composition which contains a sweetening agent which is cariogenic becomes non-cariogenic by the addition of erythritol. This effect is shown by in-vitro acid production tests. It is assumed that if the pH of a S. mutans culture does not drop below a certain pH level when an erythritol containing composition is added the composition is non-cariogenic and can be called 'safe for teeth' according to the criteria developed by Muhlemann. Replacing a part of the normally present cariogenic sweetening agent with erythritol gives a product which does not give rise to excessive acid production in spite of the presence of the normally cariogenic sweetening agent.
The present invention also discloses foodstuff, mouth rinse and tooth paste compositions wherein a part of the sweetener has been replaced with erythritol.
Whereas in general the non-cariogenicity of erythritol has been reported by testing pure erythritol solutions or sugarless compositions or products containing erythritol as a sugar replacer the present inventors have surprisingly found that addition of an amount of erythritol to a composition or product containing a sugar still results in a non-cariogenic product. It is thus disclosed that erythritol has an anti-cariogenic effect.
' CA 02203082 1997-04-18 The present invention describes the use of erythritol as an anti-cariogenic agent in food preparations, tooth paste and mouth rinse.
Erythritol is used in a composition containing a normal sweetener wherein a part of this sweetener is replaced with erythritol characterised in that the composition is non-cariogenic. The amount of erythritol required to achieve this depends on the amount and the type of the other (cariogenic) sugar which is present. In milk chocolatepreparations the sugar is replaced with erythritol which can counteracts the presence of lactose which is of course essential and is not replaced.
Positive results have been found when erythritol was present in an amount as low as between 10 and 20 % (w/w) of the sugar component. It is evident that the mentioned anti-cariogenic activity will than also be present when higher amounts of erythritol are used.
Although the effect is mentioned for replacement of sucrose it is also possible to replace a part of the sweetening agent which is a polyol itself. As shown hereinafter sorbitol and lactitol show an important acid production which is not found when these polyols are partly replaced with erythritol. Moreover the effect of erythritol is also to protect against acidifying sugars after the erythritol composition is already swallowed.
The present invention is thus illustrated in compositions which further comprised as the normal sweetener sucrose, sorbitol, lactitol, maltitol and isomalt.
In a further application it is shown that the cariogenic effect of lactose which is present in milk powder is counteracted by the presence of erythritol.
It is shown for the first time how non-cariogenic sugar free milk chocolate is obtained.
Food compositions in which the mixtures can be applied are all foods wherein normally a sugar component or other sweetening agent is used.
It is further possible to use these mixtures in non-food compositions such as tooth paste, mouth rinse or chewing gum.
Specific compositions are given in the examples and illustrate the combined use of erythritol and other sweetening composition in gelatine gums, gum arabic pastilles, chewy candies, hard candies, fondant and fudge. The examples further show the use in partial replacement of sorbitol in chewing gum. Other interesting applications are in chocolate.
In order to illustrate the above described anti-cariogenic activity the following experiments were performed.
In-vitro incubation of S.mutans with erythritol and with sucrose as a control and measurement of the pH development in the solution showed that erythritol does not give rise to a change in pH (Figure 1). Erythritol can therefore be classified as non-cariogenic in this in-vitro test system.
In the same experiment the lactic acid production was measured and it was found that erythritol did not give rise to lactic acid production (Figure 2).
In order to confirm whether this phenomenon was specific for the S. mutans species different Streptococci were evaluated. It was found that also S. sobrinus and S. rattus did not produce acid upon incubation with erythritol (Figure 3).
The lactic acid production when different S.mutans strains were incubated with erythritol was also absent (Figure 4).
It can therefore be concluded that erythritol has a non-cariogenic activity when different strains and species of Streptococcus are used.
The anti-cariogenic activity of erythritol was shown by incubation of sorbitol together with erythritol. The use of a final concentration 140mM of sorbitol did not give rise to acid production in the presence of 30mM erythritol. The same experiment perforrned using xylitol instead of erythritol showed that the anti-cariogenic activity of erythritol appears to be similar to that of xylitol (Figures 6 and 5 respectively).
The above was confirmed when the amount of acid produced was measured (Figure 7).
Finally it was shown that the effect observed for sorbitol was also found when lactitol was used instead of sorbitol (Figure 8).
Example S describes the effect of the presence of erythritol or xylitol on the pH
development by S. mutans when lactose and milk powder are present (Figure 9). The effect on total acid production is also followed (Figure 10). It appears that the pH
lowering effect of lactose and milk powder is considerably lowered by the addition of erythritol.
The same effect is observed when the erythritol is incorporated in milk chocolate (Figures 11 and 12). The effect of lactose ean therefor be counteracted by the addition of a limited amount of erythritol to sugar free milk chocolate.
These last examples disclose a sugar free non-cariogenic milk chocolate.
The sugar is replaced with erythitol in the example it can however also be replaced with a eombination of erythritol and maltitol, sorbitol, laetitol or isomalt as long as there is enough erythritol present to give the anti-eariogenie effeet against the laetose present in the milk powder. Milk powder ean be present in amounts between 15 an 30 %. The amount of erythitol should be adapted accordingly. It may also be advantageous to replace only a part of the sugar. It has been determined that to observe a certain anti-cariogenic effect or at least a lowering of the cariogenicity at least about 14 % of the sugar is to be replaeed with erythritol.
Finally it is also possible to eombine erythritol with xylitol.
The invention diseloses a non-eariogenie milk ehoeolate eomposition eontaining between 15 and 30 % whole milk powder and between 35.5 and 50.5 % sweetener wherein the sweetener seleeted form the group eonsisting of erythritol and a mixture of erythritol with sucrose, sorbitol, lactitol, maltitol, xylitol or isomalt.
It can be concluded that like xylitol, erythritol has an anti-cariogenic activity.
The practieal use of this activity depends on the relative amounts of sugar and erythritol.
It is elear that this phenomenon is not restrieted to the use of specific substrates or specific Streptococcus strains or species.
' CA 02203082 1997-04-18 This effect is for erythritol at least as strong as the anti-cariogenic activity of xylitol. The present invention further discloses the use of erythritol as a partial replacer of other known sweetening agents. Erythritol is used for partial replacement of sugar in different applications and the product is still considered as non-cariogenic.
Examples Experimental The method used in the present examples is an in-vitro cariogenicity test. In this test 'in -vitro' fermentability of carbohydrates by the mouth bacterium Streptococcus mutans, is investigated under defined conditions. The test is set up as follows. In a medium, consisting of a simple nitrogen source with the test substance as sole carbon source, buffered with a physiological buffer, organic acid production is recorded over time.
1. Medium constituents~ carbohydrate: 0.85M stock solution.
Final concentration in test volume is 170mM.~ nitrogen source:6.7%d.s. Yeast Nitrogen Base (YNB from Difco) Final concentration in test is 0.67%d.s.~ buffer: 1.25M MES (morpholino-ethane-sulfonic acid) suspension is adjusted to pH=7.2 with concentrated NH40H (MES is solubilised during pH
adjustment). Final concentration in test is 0.25M.
The solutions were sterilised by filtration (0.2211) Each sterile 'in vitro' test tube (lSxlSOmm, metal stopper) contained the following ingredients (for a Sml test):
- l.Oml carbohydrate stock solution (0.85M) - l.Oml MES-buffer - O.5ml YNB-solution - l.5ml sterile distilled water - l.Oml inoculum A Sml test is generally used when low cariogenic substrates are tested, because of the high inoculum density, which is needed for these substrates; for cariogenic substrates (as sucrose, dextrose) the test is performed in lOml (all volumes are doubled).
Technical Field The present invention discloses the anti-cariogenic activity of erythritol. The invention further discloses the use of erythritol in food preparations as an at least partial replacer of sugar or other cariogenic sweetening agents. Erythritol is used in combination with norrnally employed sweetening agents and the favourable characteristics of the erythritol are preserved. The usefulness of this anti-cariogenic effect is demonstrated in food preparations such as chewing gum, chocolate and candies wherein a part of the sugar, lactose, sorbitol or maltitol is replaced with erythritol.
Background of the invention Polyhydric alcohols are used in food compositions to retain the original quality of the food on ageing and shipping or to obtain a texture or product quality that was not present in the original product. Sorbitol, glycerol, mannitol and other polyols are already used on a large scale as food additives.
Erythritol, a naturally occurring polyol sweetener, has relatively recently become available in significant amounts. Erythritol is used for its capacity to replace sugar while preserving the sweet taste. Erythritol is 60% as sweet as sucrose at the normal use level and is sweeter than mannitol and sorbitol. It is also used because it is excreted unmetabolised and therefore leads to an important calorie reduction.
Apart from the calorie reduction erythritol can also provide the texture of a 'fatty mouthfeel'. Because of this characteristic erythritol is also suitably used as a fat replacer.
Since erythritol is not metabolised it will have little or no effect upon the normal body function. It may therefore be used in foodstuffs designed for people whose metabolizable carbohydrate intake must be restricted due to diabetes or obesity.
' CA 02203082 1997-04-18 Erythritol is also used in sugarless chewing-gum applications. It is known that erythritol is not fermented by bacteria appearing in the mouth flora, and especially by Streptococci, therefore erythritol does not give rise to acidification. This acidification is one of the causing agents of caries. The Streptococci are also responsible for the formation of water-insoluble glucan which in turn forms the dental plaque. The dental plaque will retain microorganisms and therefore also stimulates caries formation.
Products which contain erythritol instead of other sweetening agents have been tested in the so-called Muhlemann test (Imfeld, Th. and Muhlemann, H.R. J, Prev. Dentistry 4 8-14 (1977) and Imfeldt, Th. and Duhamel, L. Revue d'Odonto-stomatologie 9: 27-38 (1980)). This test is based on the intra-oral measurement of plaque pH. In this test a criterium for the indication 'safe for teeth' is developed. A product or composition is called 'safe for teeth' if the pH in the mouth does not drop below 6 after consumption of the product or composition. According to this criterium erythritol is considered as 'safe for teeth'. Replacement of sugar by erythritol therefore reduces the amount of caries to a considerable degree.
All this is known for some time as evidenced by the vast amount of literature covering an ever growing field of potential applications for polyols in general and for erythritol in particular.
Erythritol is commercially produced by fermentation of glucose. Potential fermentation processes are described in European patents EP 0 136 802, EP 0 136 803, EP 0 136 804, EP 0 136 805, EP 0 262 463, EP 0 327 016 and EP 0 327 342. Chemical methods for the production of erythritol are well known and include hydrogenolysis of dialdehyde starch, reduction of formaldehyde and hydrogenolysis of sorbitol.
Erythritol, which is extensively marketed in Japan, is increasingly used as a sugar replacer in such applications as chocolates, candies, pie fillings, soft drinks etc.
European patent application EP 0 009 325 describes the use of erythritol in the form of a sugarless cariostatic composition comprising at least 5~o erythritol. The preferred use of this composition is in toothpaste or chewing gum and it is reported that preferably the sugars are completely replaced with erythritol. Moreover all examples relate to the total replacement of sugar.
' CA 02203082 1997-04-18 European patent EP 0 S11 761 describes instant pie fillings containing erythritol and sorbitol.
European patent EP 0 530 995 describes the application of erythritol or maltitolfor the preparation of low cariogenic and low calorie lozenges.
European patent application EP 0 727 146, which was not pre-published, disclosesa chocolate composition containing erythritol and an amount of maltitol sufficient to mask the cooling effect of erythritol. The chocolate preparations contain no sugar and the application only describes bitter (black) chocolate i.e. chocolate containing no milk powder or lactose.
Among the references relating to the non-cariogenic effect of erythritol the following are specifically pointed out. Kawanabe et al. Caries Res. 26 358-362 (1992) describes the non-cariogenecity of erythritol as a substrate. After studies in which rats were fed diets containing erythritol, sucrose or starch it was concluded that erythritol was not utilized as a substrate for tooth plaque forrnation. Furthermore, Streptococci did not produce lactic acid.
European patent application EP 0 561 089 describes the use of different combinations of hydrogenated mono-saccharides with polysaccharides. No specific mention is made of any special effects observed with erythritol let alone an anti-cariogenic effect of erythritol. Furthermore erythritol is not used in any of the experiments.
US patent 4,518,581 describes the low- or anti-cariogenic properties of isomalto-oligosaccarides. In Table 1 it is demonstrated that erythritol, in an amount of 10% with respect to sucrose, does not inhibit the water-insoluble glucan formation by Streptococcus mutans 6715. Elythritol is therefore not classified as anti-cariogenic according to the criteria developed in this US patent.
One of the major drawbacks of the use of erythritol as a sugar replacer is that it is much more expensive than some of the substances which it replaces. It would therefore be interesting to replace only a part of the sugar by erythritol while at the same time preserving the characteristics of erythritol specifically its non-cariogenic effect.
' CA 02203082 1997-04-18 Summary of the invention The present invention discloses that erythritol has an anti-cariogenic effect.
The present invention further discloses the use of erythritol as a partial replacer of sugar or of other cariogenic sweetening agents. Specifically, the invention discloses the use of erythritol as an anti-cariogenic agent in the preparation of food products, tooth paste and mouth rinse. The invention further disloses the use of erythritol as a sugar replacer in chocolate, specifically in milk chocolate.
The invention further discloses a sugar free non-cariogenic milk chocolate.
Erythritol is used for partial replacement of sugar in different applications and it is demonstrated that the product can still be considered as non-cariogenic.
The present invention further discloses the use of a non-cariogenic combination of erythritol and other sweetening agents such as glucose, lactose, sorbitol, xylitol, maltitol and lactitol.
Brief description of the figures Figure 1 shows the pH development when S. mutans in the in-vitro test medium is incubated with erythritol and with sucrose.
Figure 2 shows the lactic acid production when S. mutans in the in-vitro test medium is incubated with erythritol and with sucrose.
Figure 3 shows the lactic acid production when different Streptococcus strains are incubated with erythritol or glucose.
Figure 4 shows the lactic acid production when different S.mutans strains are incubated with erythritol or glucose.
Figure 5 shows the anti-cariogenic effect of xylitol in combination with sorbitol.
Figure 6 shows the anti-cariogenic effect of erythritol in combination with sorbitol.
Figure 7 shows the total amount of acid produced upon incubation of S. mutans with sorbitol, sorbitol/xylitol and sorbitol/erythritol.
Figure 8 shows the total amount of acid produced upon incubation of S. mutans with lactitol, lactitol/xylitol and lactitol/erythritol.
-Figure 9 shows the pH development when S. mutans is incubated with lactose or milk powder in the presence or absence of Malbit Ch, xylitol or erythritol(ErOH).
Figure 10 shows the total amount of acid produced upon incubation of S. mutans with lactose or milk powder in the presence or absence of Malbit Ch, xylitol or erythritol (ErOH).
Figure 11 shows the pH development when S. mutans is incubated with milk and dark chocolate containing erythritol.
Figure 12 shows the total amount of acid produced upon incubation of S. mutans with milk and dark chocolate containing erythritol.
Detailed description of the invention The present invention discloses that erythritol has an anti-cariogenic effect. For the purpose of the present invention by anti-cariogenic effect is meant that a composition which contains a sweetening agent which is cariogenic becomes non-cariogenic by the addition of erythritol. This effect is shown by in-vitro acid production tests. It is assumed that if the pH of a S. mutans culture does not drop below a certain pH level when an erythritol containing composition is added the composition is non-cariogenic and can be called 'safe for teeth' according to the criteria developed by Muhlemann. Replacing a part of the normally present cariogenic sweetening agent with erythritol gives a product which does not give rise to excessive acid production in spite of the presence of the normally cariogenic sweetening agent.
The present invention also discloses foodstuff, mouth rinse and tooth paste compositions wherein a part of the sweetener has been replaced with erythritol.
Whereas in general the non-cariogenicity of erythritol has been reported by testing pure erythritol solutions or sugarless compositions or products containing erythritol as a sugar replacer the present inventors have surprisingly found that addition of an amount of erythritol to a composition or product containing a sugar still results in a non-cariogenic product. It is thus disclosed that erythritol has an anti-cariogenic effect.
' CA 02203082 1997-04-18 The present invention describes the use of erythritol as an anti-cariogenic agent in food preparations, tooth paste and mouth rinse.
Erythritol is used in a composition containing a normal sweetener wherein a part of this sweetener is replaced with erythritol characterised in that the composition is non-cariogenic. The amount of erythritol required to achieve this depends on the amount and the type of the other (cariogenic) sugar which is present. In milk chocolatepreparations the sugar is replaced with erythritol which can counteracts the presence of lactose which is of course essential and is not replaced.
Positive results have been found when erythritol was present in an amount as low as between 10 and 20 % (w/w) of the sugar component. It is evident that the mentioned anti-cariogenic activity will than also be present when higher amounts of erythritol are used.
Although the effect is mentioned for replacement of sucrose it is also possible to replace a part of the sweetening agent which is a polyol itself. As shown hereinafter sorbitol and lactitol show an important acid production which is not found when these polyols are partly replaced with erythritol. Moreover the effect of erythritol is also to protect against acidifying sugars after the erythritol composition is already swallowed.
The present invention is thus illustrated in compositions which further comprised as the normal sweetener sucrose, sorbitol, lactitol, maltitol and isomalt.
In a further application it is shown that the cariogenic effect of lactose which is present in milk powder is counteracted by the presence of erythritol.
It is shown for the first time how non-cariogenic sugar free milk chocolate is obtained.
Food compositions in which the mixtures can be applied are all foods wherein normally a sugar component or other sweetening agent is used.
It is further possible to use these mixtures in non-food compositions such as tooth paste, mouth rinse or chewing gum.
Specific compositions are given in the examples and illustrate the combined use of erythritol and other sweetening composition in gelatine gums, gum arabic pastilles, chewy candies, hard candies, fondant and fudge. The examples further show the use in partial replacement of sorbitol in chewing gum. Other interesting applications are in chocolate.
In order to illustrate the above described anti-cariogenic activity the following experiments were performed.
In-vitro incubation of S.mutans with erythritol and with sucrose as a control and measurement of the pH development in the solution showed that erythritol does not give rise to a change in pH (Figure 1). Erythritol can therefore be classified as non-cariogenic in this in-vitro test system.
In the same experiment the lactic acid production was measured and it was found that erythritol did not give rise to lactic acid production (Figure 2).
In order to confirm whether this phenomenon was specific for the S. mutans species different Streptococci were evaluated. It was found that also S. sobrinus and S. rattus did not produce acid upon incubation with erythritol (Figure 3).
The lactic acid production when different S.mutans strains were incubated with erythritol was also absent (Figure 4).
It can therefore be concluded that erythritol has a non-cariogenic activity when different strains and species of Streptococcus are used.
The anti-cariogenic activity of erythritol was shown by incubation of sorbitol together with erythritol. The use of a final concentration 140mM of sorbitol did not give rise to acid production in the presence of 30mM erythritol. The same experiment perforrned using xylitol instead of erythritol showed that the anti-cariogenic activity of erythritol appears to be similar to that of xylitol (Figures 6 and 5 respectively).
The above was confirmed when the amount of acid produced was measured (Figure 7).
Finally it was shown that the effect observed for sorbitol was also found when lactitol was used instead of sorbitol (Figure 8).
Example S describes the effect of the presence of erythritol or xylitol on the pH
development by S. mutans when lactose and milk powder are present (Figure 9). The effect on total acid production is also followed (Figure 10). It appears that the pH
lowering effect of lactose and milk powder is considerably lowered by the addition of erythritol.
The same effect is observed when the erythritol is incorporated in milk chocolate (Figures 11 and 12). The effect of lactose ean therefor be counteracted by the addition of a limited amount of erythritol to sugar free milk chocolate.
These last examples disclose a sugar free non-cariogenic milk chocolate.
The sugar is replaced with erythitol in the example it can however also be replaced with a eombination of erythritol and maltitol, sorbitol, laetitol or isomalt as long as there is enough erythritol present to give the anti-eariogenie effeet against the laetose present in the milk powder. Milk powder ean be present in amounts between 15 an 30 %. The amount of erythitol should be adapted accordingly. It may also be advantageous to replace only a part of the sugar. It has been determined that to observe a certain anti-cariogenic effect or at least a lowering of the cariogenicity at least about 14 % of the sugar is to be replaeed with erythritol.
Finally it is also possible to eombine erythritol with xylitol.
The invention diseloses a non-eariogenie milk ehoeolate eomposition eontaining between 15 and 30 % whole milk powder and between 35.5 and 50.5 % sweetener wherein the sweetener seleeted form the group eonsisting of erythritol and a mixture of erythritol with sucrose, sorbitol, lactitol, maltitol, xylitol or isomalt.
It can be concluded that like xylitol, erythritol has an anti-cariogenic activity.
The practieal use of this activity depends on the relative amounts of sugar and erythritol.
It is elear that this phenomenon is not restrieted to the use of specific substrates or specific Streptococcus strains or species.
' CA 02203082 1997-04-18 This effect is for erythritol at least as strong as the anti-cariogenic activity of xylitol. The present invention further discloses the use of erythritol as a partial replacer of other known sweetening agents. Erythritol is used for partial replacement of sugar in different applications and the product is still considered as non-cariogenic.
Examples Experimental The method used in the present examples is an in-vitro cariogenicity test. In this test 'in -vitro' fermentability of carbohydrates by the mouth bacterium Streptococcus mutans, is investigated under defined conditions. The test is set up as follows. In a medium, consisting of a simple nitrogen source with the test substance as sole carbon source, buffered with a physiological buffer, organic acid production is recorded over time.
1. Medium constituents~ carbohydrate: 0.85M stock solution.
Final concentration in test volume is 170mM.~ nitrogen source:6.7%d.s. Yeast Nitrogen Base (YNB from Difco) Final concentration in test is 0.67%d.s.~ buffer: 1.25M MES (morpholino-ethane-sulfonic acid) suspension is adjusted to pH=7.2 with concentrated NH40H (MES is solubilised during pH
adjustment). Final concentration in test is 0.25M.
The solutions were sterilised by filtration (0.2211) Each sterile 'in vitro' test tube (lSxlSOmm, metal stopper) contained the following ingredients (for a Sml test):
- l.Oml carbohydrate stock solution (0.85M) - l.Oml MES-buffer - O.5ml YNB-solution - l.5ml sterile distilled water - l.Oml inoculum A Sml test is generally used when low cariogenic substrates are tested, because of the high inoculum density, which is needed for these substrates; for cariogenic substrates (as sucrose, dextrose) the test is performed in lOml (all volumes are doubled).
2. Inoculum preparation A stock culture is prepared by transferring Streptococcus mutans -TCV264(ATCC25175) from TBAbase (Tryptose Blood Agar base) slants to TSB (Tryptic Soy Broth?-MES buffer (3%TSB - 0.06M) in lL flask, pH7.2, and grown at 37~C for 16 hours, lOOstrokes/min shaking.
Bacteria are concentrated by centrifugation (10 minutes at 3000g). Cells are washed with physiological buffer (0.04%NaCl, 0.3%KH2P04, 0.7%Na2HP04.2H20, +0.5% Tween 80) and centrifuged again.
The final precipitate is resuspended in a minim~l volume (25ml) of the same buffer, to contain approx. 2-SxlOelO cells/ml.
This stock culture is transferred into sterile REVCO-vials (lml/vial), immediately frozen in liquid nitrogen and stored at -70~C.
A vial with frozen S.mutans cells is used to inoculate a sterile O.5L flask with 500ml TSB-MES
buffer, slightly agitating in a waterbath to dispers the cells. The culture is grown under the same conditions, as described above, during 5-7 hours (pH=6.3-6.4 and O.D.660=0.8-0.9).
Cells are then harvested and resuspended in lOml physiological buffer (=SOx concentrated).
Control platings on slants with Bile Esculin Agar are performed to check the purity and concentration of this cell-suspension.
Because of practical reasons and of the difficulty of viable cell count with Streptococci, the cell density is estimated several times by incubation of the inoculum on dextrose as substrate, with three different amounts of cells, and the acid production rate is observed.
As inoculum for the test l.Oml of the above obtained suspension is used to inoculate the test tubes of the in vitro test.
All manipulations are carried out in a sterile environment.
Bacteria are concentrated by centrifugation (10 minutes at 3000g). Cells are washed with physiological buffer (0.04%NaCl, 0.3%KH2P04, 0.7%Na2HP04.2H20, +0.5% Tween 80) and centrifuged again.
The final precipitate is resuspended in a minim~l volume (25ml) of the same buffer, to contain approx. 2-SxlOelO cells/ml.
This stock culture is transferred into sterile REVCO-vials (lml/vial), immediately frozen in liquid nitrogen and stored at -70~C.
A vial with frozen S.mutans cells is used to inoculate a sterile O.5L flask with 500ml TSB-MES
buffer, slightly agitating in a waterbath to dispers the cells. The culture is grown under the same conditions, as described above, during 5-7 hours (pH=6.3-6.4 and O.D.660=0.8-0.9).
Cells are then harvested and resuspended in lOml physiological buffer (=SOx concentrated).
Control platings on slants with Bile Esculin Agar are performed to check the purity and concentration of this cell-suspension.
Because of practical reasons and of the difficulty of viable cell count with Streptococci, the cell density is estimated several times by incubation of the inoculum on dextrose as substrate, with three different amounts of cells, and the acid production rate is observed.
As inoculum for the test l.Oml of the above obtained suspension is used to inoculate the test tubes of the in vitro test.
All manipulations are carried out in a sterile environment.
3. In-vitro test conditions and samplin~
Inoculated test tubes are incubated, without shaking, at 37~C.
Test tubes are agitated on a Vortex, just before sampling.
At appropliate time intervals, sterile samples (0.8ml) are taken, centrifuged for 5' at 3000g and supernatant is filtered through 0.4511 filter (non-sterile). The pH is measured .
0.5ml Samples are transferred to lml HPLC-vials with 0.25ml I.S. (internal standard=butyric acid 8mg/ml in 0.225M H2SO4). The samples are kept frozen (-20~C), when immediate HPLC
analysis is not possible.
Depending on the type of carbohydrate under investigation, different inoculum concentrations and different time intervals for sampling are chosen.
~ For polyols and alternative sweeteners, acid evolution is followed in a 16 to 40 hour interval, using approx. 5xlOe9 cells/ml inoculum in the test tube.
~ For glucose, fructose, sucrose and other fermentable carbohydrates, the faster acid production, requires an interval from 1 to 24 hours and a 10 times lower inoculum density in the test tubes.
Inoculated test tubes are incubated, without shaking, at 37~C.
Test tubes are agitated on a Vortex, just before sampling.
At appropliate time intervals, sterile samples (0.8ml) are taken, centrifuged for 5' at 3000g and supernatant is filtered through 0.4511 filter (non-sterile). The pH is measured .
0.5ml Samples are transferred to lml HPLC-vials with 0.25ml I.S. (internal standard=butyric acid 8mg/ml in 0.225M H2SO4). The samples are kept frozen (-20~C), when immediate HPLC
analysis is not possible.
Depending on the type of carbohydrate under investigation, different inoculum concentrations and different time intervals for sampling are chosen.
~ For polyols and alternative sweeteners, acid evolution is followed in a 16 to 40 hour interval, using approx. 5xlOe9 cells/ml inoculum in the test tube.
~ For glucose, fructose, sucrose and other fermentable carbohydrates, the faster acid production, requires an interval from 1 to 24 hours and a 10 times lower inoculum density in the test tubes.
4. Analysis and calculation of results Organic acids are determined by HPLC, on a Sodex KC811-column in H+form, at 65~C and eluted with 0.01~o H2SO4 at 0.8ml/min and an injection volume of 25,u1; detection with UV at 210nm.
Areas of lactic, formic and acetic acid peaks are recorded and corrected with butyric acid as internal standard. HPLC results are expressed in micromol acid/ml or in mM.
' CA 02203082 1997-04-18 Example 1 Non-cario~enicity of Erythritol Figure 1 shows the results of the test for the (non)-cariogenicity of erythritol.
Streptococcus mutans was incubated in the presence of erythritol and sucrose as control. The pH of the solution was measured as a function of time. Sucrose induced a sharp pH drop whereas the pH of the solution containing erythritol remained constant.
Lactic acid production was also measured as a function of time. As can be seen from Figure 2 no lactic acid was produced from erythritol.
These results indicate that erythritol is not fermented by Streptococcus mutans and does not give rise to acid production. It can therefore be considered as non-carlogemc.
Fermentability of erythritol has also been tested with other strains of Streptococci,namely Streptococcus sobrinus and Streptococcus rattus. In all cases the fermentability of erythritol was almost zero. Fermentability of glucose was considerable after 24 hours as evidenced by lactic acid production in all tested cases (see Figure 3). Different strains of Streptoccocus mutans were also compared to check the variability within this species. None of the strains were able to produce lactic acid starting from erythritol (see Figure 4).
Example 2 Anti-Cario~enicity of Ervthritol compared with that of Xylitol In order to study whether erythritol could have a similar effect as xylitol on the dental plaque flora, xylitol and erythritol were incubated in the presence of other polyols.
Sorbitol is very slowly metabolised by lactic acid bacteria and gives rise to a ver,v slow acidification.
Blends of 80% sorbitol (140 mM) and 20% xylitol or 20% erythritol (30 mM) were incubated in the presence of S. mutans. A test with 170 mM sorbitol was used as a control. The addition of xylitol inhibited almost completely the pH decrease over time indicating an inhibition of the bacteria by this polyol (see Figure 5).
Similarly erythritol tested under identical conditions showed the same effect (see Figure 6).
Measurements of the acidity produced showed an almost complete inhibition of theproduction when 20% erythritol was added in the mixture (Figure 7). Lower erythritol contents resulted also in a very strong reduction of the S. mutans activity.
A similar effect was observed when replacing sorbitol by lactitol. Both xylitol and erythritol showed an inhibitory effect on the lactic acid bacteria (Figure 8).
Example 3 Selected candy compositions containin~ erythritol a) Su~ar-free ~elatine ~ums Sugar-free gelatine gums with taste, sensorial properties and texture equivalent to conventional sweetened gums are obtained using Maltidexr 110 syrup. A part of the Maltidex 110 is replaced with erythritol.
Basic formulation (medium hardness) Gelatine A 220 Bloom 6% 6%
water 12~ 12~
B Maltidex 110 82% 65.6%
Erythritol 16.4%
Citric acid 50% as needed Colour and flavour as needed ' CA 02203082 1997-04-18 Gelatine solution is prepared by adding the gelatine to warrn water (60~C) Maltidex + erythritol solution is prepared at the desired substance of 90%.
The Maltidex solution is cooled to 100~C and mixed with the gelatine solution.
The mix is cooled to 80~C and the citric acid, colour and flavour are added.
The product is cooled and stored.
Taste and texture are excellent and cariogenic activity was found to be absent.
b) Sugar-free ~um arabic pastilles Sugar-free gum arabic pastilles are prepared as follows with taste, sensorial properties and texture equivalent to conventional sweetened gums are obtained using Maltidexr 100 syrup. A part of the Maltidex 100 is replaced with erythritol.
Basic formulation (soft hardness) Gum arabic solution44.6 % 44.6%
50%d.s.
Maltidex 100 65.4% 52.4%
Erythritol 13 %
Citric acid 50%as needed Colour and flavouras needed Matidex solution is mixed with erythritol and gum arabic solution.
The mix is cooked at 70-72% d.s. at 110~C.
De-aerated for 30 minutes at moulding temperature and moulded.
The product is not sticky or brittle. The anti-cariogenic activity of erythritol is apparent upon consumption of these gums c) Su~ar-free chewy candy Whereas Maltidex 100 is suitable for non-grained type candies having a longer texture Maltidex 100 combined with erythritol is suitable for having a grained type shorter texture candy. Stickiness is avoided by adding a small amount of lecithin.
Gelatine solution is prepared by adding the gelatine to warm water (60~C) Maltidex + erythritol solution is prepared at the desired substance of 90%.
The Maltidex solution is cooled to 100~C and mixed with the gelatine solution.
Formulation non-grained grained Maltidex 100 88% 70.4%
Erythritol 17.6%
Gelatine sol.
Gelatine Bloom 150 1.5%
water 2.7%
Fat hydrogenated cacao fat 7.0%
(melting point 34-36~C) GMS 0.6%
Lecithin 0.2%
Gelatina is dissolved in warm water Maltidex is heated (with erythritol) 136-145~C.
GMS and lecithin are mixed with the molten fat and added to Maltidex. Gelatine is added under mixing. The mass is cooled and the taste is pulled.
d) Other compositions In similar ways sugar-free fondant, sugar-free hard candies and sugar-free fudge are made. In all these compositions the erythritol partially replaced the maltitol with the expected benefit.
Example 4 Chewing gum composition containing erythritol Low liquid phase chewing gum formulations of the composition presented in Table I
were prepared as follows. Erythritol was used in such an amount that about 20% of the sorbitol was replaced.
The kneader is heated to about 50~C and warm gum base having about the same telllpelalule is added. Kneading is continued for 5 minutes.
50% of the sorbitol powder and/or the erythritol are added and kneading is continued for 5 minutes. The rem~ining sorbitol powder is added, kneading is continued for 5 minutes.
Glycerol is added and kneading is continued for 3 minutes. Finally, the flavour is added and kneading is continued for 5 minutes. The mass is then extruded and laminated.
Table 1. Low liquid phase chewing gum formulation 100% sorbitol 20% polyol % %
Gum base 35 35 Sorbitol powder (P6)46 37.2 Polyol type - 9.2 Mannitol 15 15 Glycerol 2 2 Mint flavour 2 2 Hardness determination of the gum mass after plc;palalion. The hardness measurement of the gum mass obtained by penetration at different tempe.alul~s shows no significant differences for the tested products. The pure sorbitol type (P6 grade) is slightly harder but the softer gum mass with the polyols has no negative influence on further processing e.g. extrusion.
The presented chewing gum composition is non-cariogenic.
Example S
Anti-Cario~enicity of Erythritol on lactose and milk powder In order to study whether erythritol has an anti-cariogenic effect on chocolate components the cariogenicity test was repeated with the following samples.
Lactose 1%, milk powder 1%, malbit Ch 3%, erythritol 3% and xylitol 3%.
Blends were used having the following compositions.
Lactose 1% / Malbit Ch 2 %, Lactose 1% / Erythritol 2%
Lactose 1% / Xylitol 2%
Milk powder 1% / Malbit Ch 2%
Milk powder 1% / Erythritol 2%
Milk powder 1% / Xylitol 2%
The results in the form of the pH development in time are shown in Figure 9. From this figure it appears that after 3 to 6 hours lactose, milk powder, and lactose and milk powder blended with Malbit Ch show a considerable lowering of the pH.
Clearly Malbit Ch does not positively influence the lowering of the pH.
The lowering of the pH observed in the presence of both lactose and milk powder is considerably retarded upon addition of xylitol or erythritol. Erythritol is thus having an anti-cariogenic effect. The pH lowering activity caused by lactose and milk powder is blocked to a considerable degree in the presence of erythritol.
Measurements of the acidity produced showed an almost complete inhibition of theacid production for up to three hours when erythritol or xylitol were added (Figure 10).
' CA 02203082 1997-04-18 Example 6 Su~ar free milk chocolate containin~ erythritol Erythritol was used in sugar free milk chocolate. Cariogenicity was determined based on the pH development and the total amount of acid produced.
Table 2. Sugar free milk chocolate formulation Cocoa mass 11.5%
Cocoa butter 23.5%
erythritol 42.5%
whole milk powder 22.0%
lecithin 0.5%
The chocolate was prepared as follows. Erythritol, cocoa mass, about 7% of the cocoa butter and whole milk powder were mixed for 15 min. at 40~C. The paste wasmilled on a refiner to obtain a particle size of about 40 to 60 ,um. After 1 hour of dry conching about 70 % of the remaining cocoa butter was added. Conching was at 55-60~C for a total of 22 hours. Two hours before the end of the conching time the rem~ining cocoa butter was added. One hour before the end of the conching the lecithin was added. Tempering or tabletting was performed at 30-31~C.
For comparative purposes dark chocolate was also prepared according to standard methods.
The following samples were tested.
Dextrose 3%, Milk powder 3%, Malbit Ch 3%, Malbit Ch as sugar replacer in milk chocolate, Malbit Ch as sugar replacer in dark chocolate, Milk powder 1% / Erythritol 2%, Erythritol as sugar replacer in milk chocolate, (samples in the form of ovals orsquares) Erythritol as sugar replacer in dark chocolate.
The results in the form of the pH development in time are shown in Figure 11. From this figure it appears that after 3 to 6 hours the pH lowering activity ascribed to the presence of lactose in milk chocolate lactose is considerably reduced by the addition of erythritol.
In dark chocolate there is of course no effect from the milk powder (lactose) therefore in this case the non-cariogenic effect is actually measured.
Measurements of the total acidity produced showed an almost complete inhibition of the acid production for up to three hours when erythritol was added to milk chocolate until up to 3 hours (Figure 12).
Areas of lactic, formic and acetic acid peaks are recorded and corrected with butyric acid as internal standard. HPLC results are expressed in micromol acid/ml or in mM.
' CA 02203082 1997-04-18 Example 1 Non-cario~enicity of Erythritol Figure 1 shows the results of the test for the (non)-cariogenicity of erythritol.
Streptococcus mutans was incubated in the presence of erythritol and sucrose as control. The pH of the solution was measured as a function of time. Sucrose induced a sharp pH drop whereas the pH of the solution containing erythritol remained constant.
Lactic acid production was also measured as a function of time. As can be seen from Figure 2 no lactic acid was produced from erythritol.
These results indicate that erythritol is not fermented by Streptococcus mutans and does not give rise to acid production. It can therefore be considered as non-carlogemc.
Fermentability of erythritol has also been tested with other strains of Streptococci,namely Streptococcus sobrinus and Streptococcus rattus. In all cases the fermentability of erythritol was almost zero. Fermentability of glucose was considerable after 24 hours as evidenced by lactic acid production in all tested cases (see Figure 3). Different strains of Streptoccocus mutans were also compared to check the variability within this species. None of the strains were able to produce lactic acid starting from erythritol (see Figure 4).
Example 2 Anti-Cario~enicity of Ervthritol compared with that of Xylitol In order to study whether erythritol could have a similar effect as xylitol on the dental plaque flora, xylitol and erythritol were incubated in the presence of other polyols.
Sorbitol is very slowly metabolised by lactic acid bacteria and gives rise to a ver,v slow acidification.
Blends of 80% sorbitol (140 mM) and 20% xylitol or 20% erythritol (30 mM) were incubated in the presence of S. mutans. A test with 170 mM sorbitol was used as a control. The addition of xylitol inhibited almost completely the pH decrease over time indicating an inhibition of the bacteria by this polyol (see Figure 5).
Similarly erythritol tested under identical conditions showed the same effect (see Figure 6).
Measurements of the acidity produced showed an almost complete inhibition of theproduction when 20% erythritol was added in the mixture (Figure 7). Lower erythritol contents resulted also in a very strong reduction of the S. mutans activity.
A similar effect was observed when replacing sorbitol by lactitol. Both xylitol and erythritol showed an inhibitory effect on the lactic acid bacteria (Figure 8).
Example 3 Selected candy compositions containin~ erythritol a) Su~ar-free ~elatine ~ums Sugar-free gelatine gums with taste, sensorial properties and texture equivalent to conventional sweetened gums are obtained using Maltidexr 110 syrup. A part of the Maltidex 110 is replaced with erythritol.
Basic formulation (medium hardness) Gelatine A 220 Bloom 6% 6%
water 12~ 12~
B Maltidex 110 82% 65.6%
Erythritol 16.4%
Citric acid 50% as needed Colour and flavour as needed ' CA 02203082 1997-04-18 Gelatine solution is prepared by adding the gelatine to warrn water (60~C) Maltidex + erythritol solution is prepared at the desired substance of 90%.
The Maltidex solution is cooled to 100~C and mixed with the gelatine solution.
The mix is cooled to 80~C and the citric acid, colour and flavour are added.
The product is cooled and stored.
Taste and texture are excellent and cariogenic activity was found to be absent.
b) Sugar-free ~um arabic pastilles Sugar-free gum arabic pastilles are prepared as follows with taste, sensorial properties and texture equivalent to conventional sweetened gums are obtained using Maltidexr 100 syrup. A part of the Maltidex 100 is replaced with erythritol.
Basic formulation (soft hardness) Gum arabic solution44.6 % 44.6%
50%d.s.
Maltidex 100 65.4% 52.4%
Erythritol 13 %
Citric acid 50%as needed Colour and flavouras needed Matidex solution is mixed with erythritol and gum arabic solution.
The mix is cooked at 70-72% d.s. at 110~C.
De-aerated for 30 minutes at moulding temperature and moulded.
The product is not sticky or brittle. The anti-cariogenic activity of erythritol is apparent upon consumption of these gums c) Su~ar-free chewy candy Whereas Maltidex 100 is suitable for non-grained type candies having a longer texture Maltidex 100 combined with erythritol is suitable for having a grained type shorter texture candy. Stickiness is avoided by adding a small amount of lecithin.
Gelatine solution is prepared by adding the gelatine to warm water (60~C) Maltidex + erythritol solution is prepared at the desired substance of 90%.
The Maltidex solution is cooled to 100~C and mixed with the gelatine solution.
Formulation non-grained grained Maltidex 100 88% 70.4%
Erythritol 17.6%
Gelatine sol.
Gelatine Bloom 150 1.5%
water 2.7%
Fat hydrogenated cacao fat 7.0%
(melting point 34-36~C) GMS 0.6%
Lecithin 0.2%
Gelatina is dissolved in warm water Maltidex is heated (with erythritol) 136-145~C.
GMS and lecithin are mixed with the molten fat and added to Maltidex. Gelatine is added under mixing. The mass is cooled and the taste is pulled.
d) Other compositions In similar ways sugar-free fondant, sugar-free hard candies and sugar-free fudge are made. In all these compositions the erythritol partially replaced the maltitol with the expected benefit.
Example 4 Chewing gum composition containing erythritol Low liquid phase chewing gum formulations of the composition presented in Table I
were prepared as follows. Erythritol was used in such an amount that about 20% of the sorbitol was replaced.
The kneader is heated to about 50~C and warm gum base having about the same telllpelalule is added. Kneading is continued for 5 minutes.
50% of the sorbitol powder and/or the erythritol are added and kneading is continued for 5 minutes. The rem~ining sorbitol powder is added, kneading is continued for 5 minutes.
Glycerol is added and kneading is continued for 3 minutes. Finally, the flavour is added and kneading is continued for 5 minutes. The mass is then extruded and laminated.
Table 1. Low liquid phase chewing gum formulation 100% sorbitol 20% polyol % %
Gum base 35 35 Sorbitol powder (P6)46 37.2 Polyol type - 9.2 Mannitol 15 15 Glycerol 2 2 Mint flavour 2 2 Hardness determination of the gum mass after plc;palalion. The hardness measurement of the gum mass obtained by penetration at different tempe.alul~s shows no significant differences for the tested products. The pure sorbitol type (P6 grade) is slightly harder but the softer gum mass with the polyols has no negative influence on further processing e.g. extrusion.
The presented chewing gum composition is non-cariogenic.
Example S
Anti-Cario~enicity of Erythritol on lactose and milk powder In order to study whether erythritol has an anti-cariogenic effect on chocolate components the cariogenicity test was repeated with the following samples.
Lactose 1%, milk powder 1%, malbit Ch 3%, erythritol 3% and xylitol 3%.
Blends were used having the following compositions.
Lactose 1% / Malbit Ch 2 %, Lactose 1% / Erythritol 2%
Lactose 1% / Xylitol 2%
Milk powder 1% / Malbit Ch 2%
Milk powder 1% / Erythritol 2%
Milk powder 1% / Xylitol 2%
The results in the form of the pH development in time are shown in Figure 9. From this figure it appears that after 3 to 6 hours lactose, milk powder, and lactose and milk powder blended with Malbit Ch show a considerable lowering of the pH.
Clearly Malbit Ch does not positively influence the lowering of the pH.
The lowering of the pH observed in the presence of both lactose and milk powder is considerably retarded upon addition of xylitol or erythritol. Erythritol is thus having an anti-cariogenic effect. The pH lowering activity caused by lactose and milk powder is blocked to a considerable degree in the presence of erythritol.
Measurements of the acidity produced showed an almost complete inhibition of theacid production for up to three hours when erythritol or xylitol were added (Figure 10).
' CA 02203082 1997-04-18 Example 6 Su~ar free milk chocolate containin~ erythritol Erythritol was used in sugar free milk chocolate. Cariogenicity was determined based on the pH development and the total amount of acid produced.
Table 2. Sugar free milk chocolate formulation Cocoa mass 11.5%
Cocoa butter 23.5%
erythritol 42.5%
whole milk powder 22.0%
lecithin 0.5%
The chocolate was prepared as follows. Erythritol, cocoa mass, about 7% of the cocoa butter and whole milk powder were mixed for 15 min. at 40~C. The paste wasmilled on a refiner to obtain a particle size of about 40 to 60 ,um. After 1 hour of dry conching about 70 % of the remaining cocoa butter was added. Conching was at 55-60~C for a total of 22 hours. Two hours before the end of the conching time the rem~ining cocoa butter was added. One hour before the end of the conching the lecithin was added. Tempering or tabletting was performed at 30-31~C.
For comparative purposes dark chocolate was also prepared according to standard methods.
The following samples were tested.
Dextrose 3%, Milk powder 3%, Malbit Ch 3%, Malbit Ch as sugar replacer in milk chocolate, Malbit Ch as sugar replacer in dark chocolate, Milk powder 1% / Erythritol 2%, Erythritol as sugar replacer in milk chocolate, (samples in the form of ovals orsquares) Erythritol as sugar replacer in dark chocolate.
The results in the form of the pH development in time are shown in Figure 11. From this figure it appears that after 3 to 6 hours the pH lowering activity ascribed to the presence of lactose in milk chocolate lactose is considerably reduced by the addition of erythritol.
In dark chocolate there is of course no effect from the milk powder (lactose) therefore in this case the non-cariogenic effect is actually measured.
Measurements of the total acidity produced showed an almost complete inhibition of the acid production for up to three hours when erythritol was added to milk chocolate until up to 3 hours (Figure 12).
Claims (10)
1. Use of erythritol as an anti-cariogenic agent in the preparation of food and candy copmpositions, tooth paste and mouth rinse.
2. A composition containing a normal sweetener and erythritol wherein a part of this sweetener is replaced with erythritol characterized in that the composition is non-cariogenic.
3. A composition according to claim 2 wherein the normal sweetener is selected from the group comprising: sucrose, sorbitol, lactitol, maltitol and isomalt.
4. A composition according to claim 2 wherein the amount of normal sweetener is replaced for 5 to 40 % by erythritol or wherein erythritol is added to afinal amount of from 5 to 40 % of the total sweetener.
5. A composition according to claim 4 wherein the amount of sweetener replaced is from 5 to 20%.
6. A food or non-food composition comprising a sweetening agent together with erythritol characterized in that the erythtritol is present in such an amount that the composition is non-cariogenic.
7. A tooth paste, mouth rinse or chewing gum comprising a sweetening agent together with erythritol characterized in that the erythtritol is present in such an amount that the composition is non-cariogenic.
8. A milk chocolate composition characterized in that it is sugar free and non-cariogenic.
9. A milk chocolate composition according to claim 8 wherein the sugar is replaced with erythritol.
10. A non cariogenic milk chocolate composition containing between 15 and 30 %
whole milk powder and between 35.5 and 50.5 % sweetener wherein the sweetener selected form the group consisting of erythritol and a mixture of erythritol with sucrose, sorbitol, lactitol, maltitol, xylitol or isomalt.
whole milk powder and between 35.5 and 50.5 % sweetener wherein the sweetener selected form the group consisting of erythritol and a mixture of erythritol with sucrose, sorbitol, lactitol, maltitol, xylitol or isomalt.
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JP3719874B2 (en) * | 1998-04-24 | 2005-11-24 | サンスター株式会社 | Oral composition |
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-
1996
- 1996-04-19 GB GBGB9608153.4A patent/GB9608153D0/en active Pending
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1997
- 1997-04-18 US US08/844,452 patent/US6177064B1/en not_active Expired - Fee Related
- 1997-04-18 JP JP10209597A patent/JP3459334B2/en not_active Expired - Fee Related
- 1997-04-18 CA CA002203082A patent/CA2203082A1/en not_active Abandoned
- 1997-04-18 NO NO19971820A patent/NO318440B1/en not_active IP Right Cessation
- 1997-04-21 MX MXPA97002937A patent/MXPA97002937A/en not_active IP Right Cessation
- 1997-04-21 DK DK97302763T patent/DK0800823T3/en active
- 1997-04-21 EP EP97302763A patent/EP0800823B2/en not_active Expired - Lifetime
- 1997-04-21 DE DE69729404T patent/DE69729404T3/en not_active Expired - Lifetime
- 1997-04-21 PT PT97302763T patent/PT800823E/en unknown
- 1997-04-21 AT AT97302763T patent/ATE268596T1/en active
- 1997-04-21 ES ES97302763T patent/ES2219733T5/en not_active Expired - Lifetime
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ATE268596T1 (en) | 2004-06-15 |
GB9608153D0 (en) | 1996-06-26 |
DE69729404T2 (en) | 2004-10-07 |
JP3459334B2 (en) | 2003-10-20 |
DE69729404T3 (en) | 2009-10-08 |
PT800823E (en) | 2004-10-29 |
MXPA97002937A (en) | 2004-01-29 |
NO318440B1 (en) | 2005-03-21 |
NO971820D0 (en) | 1997-04-18 |
ES2219733T3 (en) | 2004-12-01 |
DE69729404D1 (en) | 2004-07-15 |
EP0800823B1 (en) | 2004-06-09 |
US6177064B1 (en) | 2001-01-23 |
ES2219733T5 (en) | 2009-11-11 |
EP0800823B2 (en) | 2009-06-24 |
NO971820L (en) | 1997-10-20 |
DK0800823T3 (en) | 2004-10-18 |
EP0800823A1 (en) | 1997-10-15 |
JPH1033138A (en) | 1998-02-10 |
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