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Ethanol production in fermentation of mixed sugars containing xylose

Published online: Apr 30, 2008

Geographical region USA
Subject Ethanol production
Published date Apr 3, 2008
Title Ethanol production in fermentation of mixed sugars containing xylose
Patent Application Number US20080081358 A1
Inventor Viitanen Paul V; Mc Cutchen Carol M; Li Xu; Emptage Mark; Caimi Perry G; Zhang Min; Chou Yat-Chen; Franden Mary Ann, USA Correspondence care of E I DU Pont DE Nemours and Co, USA
Relevance A method for improving production of ethanol by fermenting xylose-containing mixed sugars using Z. mobilis strains.
Type of claims Publication
Overview This patent discloses a method of improving ethanol production by xylose-utilizing Z. mobilis strain ZW658. The medium includes sorbitol, mannitol, galactitol, or ribitol (also called adonitol), which results in increased xylose utilization and increased ethanol production. A method comprises, A) providing recombinant Zymomonas cells capable of converting xylose to ethanol, B) providing a suitable medium comprising a mixed sugar composition comprising xylose and at least one additional sugar, and one sugar alcohol selected from the group consisting of sorbitol, mannitol, galactitol, and ribitol and C) contacting (A) with (B) whereby the Zymomonas cells produce ethanol.
Related patent documents US Patent publications

US5514583 - Recombinant Zymomonas for pentose fermentation (1996)
US6566107 - Recombinant Zymomonas mobilis with improved xylose utilization (2003)

Foreign patent publications

Not Listed

Patent Document Full Patent Document [external link]

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