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US 11,597,780 B2Granted
Methods for producing chitosan
AssigneeThe Royal Institution for the Advancement of Learning/Mcgill University
InventorsAudrey Moores, Thomas Di Nardo
Life of this patent
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Abstract
Method for producing high molecular weight chitosan comprising milling or grinding chitin and a reagent to produce a chitin/reagent mixture; and aging said chitin/reagent mixture to produce a high molecular weight chitosan. Method for producing low molecular weight chitosan comprising amorphizing chitin; milling or grinding said amorphized chitin and a reagent to produce chitin/reagent mixture; and aging said chitin/reagent mixture producing low molecular weight chitosan.
Claims14
A method for producing chitosan, the method comprising:
- a) milling or grinding chitin and a reagent to produce a chitin/reagent mixture, wherein the reagent is a base having a pH of more than 9;
- and
- b) aging said chitin/reagent mixture to produce the chitosan, wherein the aging is:
- i) humidity aging performed at a relative humidity of between about 43% to about 98%;
- or ii) heat aging performed at a temperature of above 120° C.
2 more elements
Dependencies are inferred from the claim text.