| abstract |
Disclosed herein is a method for preparing a chitosan product from yeast cells. Yeast cells are cultured to form biomass for yeast cells. Yeast cells are induced to undergo meiosis, causing the yeast cells to form ascospores containing ascospores, each of which contains a protective layer of chitosan in the ascospore wall. Chitosan is extracted from ascospores, purified to form purified chitosan, and precipitated and dried to form a chitosan product. |