Chitosan and method of preparing chitosan
AssigneeCargill, Incorporated
InventorsWeiyu Fan, John A. Bohlmann, James R. Trinkle, James Donald Steinke, Ki-Oh Hwang, Joseph P. Henning
Life of this patent
Estimating the term…
Abstract
A highly deacetylated chitosan obtained from microbial biomass, a method of obtaining chitosan from microbial biomass, and biomass for making chitosan are disclosed. The method includes providing chitin-containing biomass; reacting the chitin-containing biomass in a caustic solution of greater than 25 percent alkali at a reaction temperature greater than 95° C. for a reaction period of at least 10 hours to convert the chitin in the biomass to chitosan; and separating the chitosan from the caustic solution.
Claims16
A method of obtaining chitosan from microbial biomass, comprising:
- (a) reacting a chitin-containing biomass in a caustic solution of greater than 25 percent alkali at a reaction temperature greater than 95° C. for a reaction period of at least 10 hours to convert the chitin in the biomass to chitosan;
- and
- (b) separating the chitosan from the caustic solution.
Dependencies are inferred from the claim text.