METHOD FOR PREPARING CHITOSAN

摘要

A method for preparing chitosan comprises the steps of adding an aqueous organic acid solution having a concentration ranging from 0.5 to 10 % (w/v) to alkali-insoluble substances obtained by treating cultured filamentous fungi with a hot aqueous alkali solution and stirring and mixing the dispersion while heating it at a temperature ranging from 50 to 100 DEG C to extract chitosan. The method for preparing chitosan makes it possible to provide chitosan in a high productivity. Chitosan is an important biomass and may be used in various fields such as a flocculating agent for polymers, an immobilization support and porous beads.