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Hydrolysis of biomass material

United States Patent

6,692,578
February 17, 2004
View the Complete Patent at the US Patent & Trademark Office
Pacific Northwest National Laboratory - Visit the Technology Commercialization Program Website
A method for selective hydrolysis of the hemicellulose component of a biomass material. The selective hydrolysis produces water-soluble small molecules, particularly monosaccharides. One embodiment includes solubilizing at least a portion of the hemicellulose and subsequently hydrolyzing the solubilized hemicellulose to produce at least one monosaccharide. A second embodiment includes solubilizing at least a portion of the hemicellulose and subsequently enzymatically hydrolyzing the solubilized hemicellulose to produce at least one monosaccharide. A third embodiment includes solubilizing at least a portion of the hemicellulose by heating the biomass material to greater than 110.degree. C. resulting in an aqueous portion that includes the solubilized hemicellulose and a water insoluble solids portion and subsequently separating the aqueous portion from the water insoluble solids portion. A fourth embodiment is a method for making a composition that includes cellulose, at least one protein and less than about 30 weight % hemicellulose, the method including solubilizing at least a portion of hemicellulose present in a biomass material that also includes cellulose and at least one protein and subsequently separating the solubilized hemicellulose from the cellulose and at least one protein.
Schmidt; Andrew J. (Richland, WA), Orth; Rick J. (Kennewick, WA), Franz; James A. (Kennewick, WA), Alnajjar; Mikhail (Richland, WA)
Battelle Memorial Institute (Richland, WA)
09/ 792,906
20020117167
February 23, 2001
STATEMENT OF GOVERNMENT SUPPORT This invention was made with United States Government support under Contract DE-AC06-76RL01830 awarded by the U.S. Department of Energy. The United States Government has certain rights in the invention.