Patent ID: 6333399
Filing Date: 2001-12-25
Classification: A61P,C08B,C12P

Abstract:
A process for preparing chitosan-glucan complexes from biological sources comprising:a) reacting chitin-containing microorganisms having a cell structure, as said biological sources, at least once in the presence of a first alkaline solution, thereby, separating chitosan glucan complexes from the microorganisms; followed byb) reacting the chitosan-glucan complexes in the presence of diluted mineral acid, thereby, demineralizing the chitosan-glucan complexes; followed byc) reacting the chitosan-glucan complexes in the presence of a second alkaline solution, the second alkaline solution having a higher alkalinity than the first alkaline solution, thereby, effecting incomplete deacetylation of said chitosan-glucan complexes; followed byd) neutralizing the chitosan-glucan complexes, followed by washing with water, thereby, effecting incompletely deacetylized, demineralized chitosan-glucan complexes, while retaining the cell structure of the chitin-containing microorganisms.