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Modified carbohydrate-chitosan compounds, methods of making the same and methods of using the same

United States Patent

March 10, 2015
View the Complete Patent at the US Patent & Trademark Office
Compositions of matter are provided that include chitosan and a modified carbohydrate. The modified carbohydrate includes a carbohydrate component and a cross linking agent. The modified carbohydrate has increased carboxyl content as compared to an unmodified counterpart carbohydrate. A carboxyl group of the modified carbohydrate is covalently bonded with an amino group of chitosan. The compositions of matter provided herein may include cross linked starch citrate-chitosan and cross linked hemicellulose citrate-chitosan, including foams thereof. These compositions yield excellent absorbency and metal chelation properties. Methods of making cross linked modified carbohydrate-chitosan compounds are also provided.
Venditti; Richard A. (Raleigh, NC), Pawlak; Joel J. (Raleigh, NC), Salam; Abdus (Raleigh, NC), El-Tahlawy; Khaled Fathy (Raleigh, NC)
North Carolina State University (Raleigh, NC)
13/ 052,463
March 21, 2011
FEDERALLY SPONSORED SUPPORT This invention was made with government support from the Consortium for Plant Biotechnology, with support originating from the United States Department of Energy under Grant No. DE-FG36-02GO12026. The United States Government may have certain rights in the invention.