WO2003089132A1

WO2003089132A1 - Process for discoloring soluble or liquid materials

Info

Publication number: WO2003089132A1
Application number: PCT/CN2003/000283
Authority: WO
Inventors: Lina Ye
Original assignee: Lina Ye
Priority date: 2002-04-19
Filing date: 2003-04-17
Publication date: 2003-10-30
Also published as: CN1451311A; AU2003231475A1; CN1219460C

Abstract

The present invention relates to a normal-temperature process for discoloring soluble or liquid materials. High frequency vibration is additionally used in the process, which is based on the conventional discoloring with active carbon. It solves the problems of the conventional discoloring process with active carbon which not only needs heating and long time absorption, but also has unsatisfactory discoloring effect. The present invention possesses the advantages of excellent discoloring effect and fast discoloring, and suitable for discoloring soluble or liquid materials at normal temperature.

Description

Normal-temperature and high-speed decoloring method for soluble or liquid materials

The invention relates to a method for decolorizing a solution at room temperature and high speed, and is particularly suitable for a method for decoloring soluble or liquid materials. Background technique

Existing soluble or liquid materials such as food and Chinese herbal medicines are mainly decolorized by precipitation, centrifugal exchange, sulfur fumigation, activated carbon adsorption, and other methods, especially activated carbon adsorption methods, which need to be heated, or even heated to about 100 ° C. The reaction time needs more than 30 minutes, and the decolorization effect is not ideal. Due to the long time required and high temperature, some effective ingredients in the material are changed during the decolorization process. Disclosure of the present invention

The purpose of the present invention is to provide a new decoloring method. At normal temperature, the material to be decolorized uses ultrasonic high-frequency vibration to promote the high-speed movement of molecules in the solution, thereby accelerating the adsorption rate and adsorption rate of activated carbon. Achieve high-speed decolorization and minimize the conversion of active ingredients in soluble or liquid materials.

The object of the present invention can be achieved by the following measures:

A method for decolorizing soluble or liquid materials at room temperature and high speed, including the following steps:

(1) Dissolve soluble materials in water;

(2) Add activated carbon to the solution of soluble or liquid materials according to the conventional decolorization process;

(3) Vibration is applied to the mixed solution of step (2) to decolorize.

The vibration in step (3) is ultrasonic vibration.

The vibration frequency is greater than or equal to 16000 Hz.

The method for decoloring soluble or liquid materials at normal temperature and high speed is performed under normal temperature conditions. The normal temperature condition is greater than 0.

The working principle of the decoloring method of the present invention is as follows:

1. Dissolve soluble materials such as food and Chinese herbal medicines into liquids. 2. Fully mix the liquid or liquid materials to be decolorized, such as liquid food, Chinese herbal medicines, and activated carbon powder.

3. Place the mixed solution in a container with an ultrasonic transducer.

4. Start the ultrasonic generator and transmit the ultrasonic energy to the ultrasonic transducer through the wire. The transducer converts the electrical energy into mechanical energy.

5. At normal temperature, the ultrasonic transducer vibrates for less than 5 minutes to complete the decolorization.

6. Filter the decolorized liquid through a filter to filter out activated carbon and tiny flocs.

Compared with the prior art, the present invention has the following advantages:

In the traditional activated carbon decolorization process, the present invention adds a vibration process, and uses high-frequency vibration to decolorize the liquid to be decolorized. The method achieves decolorization at room temperature, and has a fast decolorization speed and good decolorization effect. High, the discoloration effect is not ideal, and the effective ingredients in the discoloration material are changed more frequently. Brief description of the drawings

FIG. 1 is a flowchart of a decoloring method according to the present invention.

The labels in the figure are explained as follows:

1-mixing tank 2-pipe 3-high frequency decolorizing tank 4-filter

5-wire 6-ultrasonic generator The best way to implement the present invention

Referring to FIG. 1, a flowchart of a decolorization method according to the present invention is shown. After dissolving a soluble material, a solution or liquid material such as food or Chinese herbal medicine is placed in a mixing tank 1 and mixed with activated carbon uniformly, and flows to a high-frequency decoloring tank 3 through a pipeline 2 The ultrasonic generator 6 and the high-frequency decoloring tank 3 are connected by a wire 5; the mixed solution of soluble or liquid materials and activated carbon is decolorized by vibration at a frequency of 16000 Hz generated by the high-frequency decoloring tank 3. The liquid material flows into the filter 4 through the pipeline 2 for filtering.

Embodiment one:

The method for decoloring raw sugar by using the method of the present invention is as follows:

Raw sugar is reconstituted by adding water at normal temperature, and then adding activated carbon for sugar, wherein the weight of carbon and raw sugar is 100%. The fraction ratio is 3.1%. After the mixture is evenly mixed, apply ultrasonic vibration to the mixture for 3-5 minutes, and then filter the activated carbon with a filter to obtain a decolorized clear liquid. The decolorization rate is about 90%.

Embodiment two:

The method for decolorizing monosodium glutamate by using the method of the present invention is as follows:

Take the dark-colored MSG mother liquor at room temperature, with a specific gravity of 1.3; add activated carbon for MSG, where the weight ratio of carbon to liquid is 3%. Mix well; apply ultrasonic to the mixture for 2-4 minutes; filter the activated carbon with a filter to get the decolorized clear liquid, and the decolorization rate is about 40%.

Industrial applicability

The present invention utilizes traditional activated or activated carbon decolorization process of soluble or liquid materials such as food and medicinal herbs, and combines them with ultra-high frequency vibration to decolorize them quickly at room temperature. The decolorization effect is good without damaging the active ingredients in materials such as food and medicinal herbs. . Suitable for discoloration of soluble or liquid material foods and Chinese herbal medicines.

Claims

Rights request

1. A method for decolorizing soluble or liquid materials at room temperature and high speed, including the following steps:

(1) Dissolve soluble materials in water;

(2) Add activated carbon to the solution of soluble materials or liquid materials according to the conventional decolorization process;

(3) Vibration is applied to the mixed solution of step (2) to decolorize.

2. The method for decoloring soluble or liquid materials at room temperature and high speed according to claim 1, characterized in that the vibration in step (3) is ultrasonic vibration.

3. The method for decoloring a soluble or liquid material at room temperature and high speed according to claim 1 or 2, wherein the vibration frequency is 16000 Hz or more.

4. A method for decolorizing soluble or liquid materials at room temperature and high speed according to claim 1, characterized in that the method is carried out at room temperature.

5. The method for decolorizing soluble or liquid materials at room temperature and high speed according to claim 4, characterized in that said room temperature conditions are greater than zero. C.