Chitosan and method of preparing chitosan

Details Chitosan and method of preparing chitosan Chitosan and method of preparing chitosan

2005-12-06

2005-12-06

Levy, Neil S. (Department: 1616)

Drug, bio-affecting and body treating compositions

Designated organic active ingredient containing

Carbohydrate doai

C424S195150, C424S195160, C424S405000, C435S254100

Reexamination Certificate

active

06972284

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.

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