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Zymomonas with improved xylose utilization in stress conditions

United States Patent

August 21, 2012
View the Complete Patent at the US Patent & Trademark Office
National Renewable Energy Laboratory - Visit the NREL Technology Transfer Website
Strains of xylose utilizing Zymomonas with improved xylose utilization and ethanol production during fermentation in stress conditions were obtained using an adaptation method. The adaptation involved continuously growing xylose utilizing Zymomonas in media containing high sugars, acetic acid, ammonia, and ethanol.
Caimi; Perry G. (Kennett Square, PA), Emptage; Mark (Wilmington, DE), Li; Xu (Newark, DE), Viitanen; Paul V. (West Chester, PA), Chou; Yat-Chen (Lakewood, CO), Franden; Mary Ann (Centennial, CO), Zhang; Min (Lakewood, CO)
E I du Pont de Nemours and Company (Wilmington, DE), E I du Pont de Nemours and Company (Wilmington, DE)
12/ 641,642
December 18, 2009
STATEMENT OF GOVERNMENT RIGHTS This invention was made with United States Government support under Contract No. 04-03-CA-70224 awarded by the Department of Energy and Contract No. DE-AC36-08GO28308 between the United States Department of Energy and the Alliance for Sustainable Energy, LLC, the Manager and Operator of the National Renewable Energy Laboratory. The U.S. Government has certain rights in this invention.