A process for the filtration of biopolymer solutions is described, comprising contacting a biopolymer solution with an adsorbent material having a pH in the range of 8.5 to 10.0, preferably for a period of about 15 minutes. Synthetic calcium silicate and magnesium oxide are the preferred contacting ...http://www.google.es/patents/US4337157?utm_source=gb-gplus-sharePatente US4337157 - Biopolymer filtration process
