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Biohydrogen production by an artificial enzymatic pathway

United States Patent

July 3, 2012
View the Complete Patent at the US Patent & Trademark Office
Oak Ridge National Laboratory - Visit the Partnerships Directorate Website
The present invention comprises an in vitro enzymatic process that effectively converts renewable polysaccharides into high yields of hydrogen at mild conditions, using only enzymes and water. The process comprises a number of enzymes: (1) phosphorylases, (2) phosphoglucomutases, (3) hydrogenases, and (4) enzymes involved in the pentose-phosphate pathway. Preferred embodiments of the process produce only hydrogen and carbon dioxide as net products, translating into an inexpensive method of generating hydrogen in very large quantities from low-cost feedstocks.
Zhang; Yi-Heng Percival (Blacksburg, VA), Mielenz; Jonathan (Knoxville, TN)
Virginia Tech Intellectual Properties, Inc. (Blacksburg, VA)
11/ 747,496
May 11, 2007
GOVERNMENT CONTRACT The United States Government has rights in this invention pursuant to Contract No. DE-AC05-00OR22725 between the United States Department of Energy and UT-Battelle, LLC.