modified by metabolic engineering to produce chemical compounds from hydrolyzed lignocellulose, pentoses, hexoses and other carbon sources
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United States of America Patent
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Oct 22, 2013
Grant Date -
Aug 30, 2012
app pub date -
Aug 6, 2010
filing date -
Aug 7, 2009
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Abstract
The present invention refers to the new Escherichia coli strains denominated JU15, JU15A, LL26 and MS04 and their derivatives that produce metabolites, particularly D-lactate, L-lactate or ethanol, with high yield and selectivity from a wide variety of carbon sources, such as culture media with a high xylose content (as the main carbon source) and, in particular, media formulated with hydrolyzed vegetables, such as sugarcane bagasse, agave bagasse and fast-growing grasses, and a wide variety of agricultural and industrial wastes, such as whey or forestry wastes, celluloses, grasses, agave bagasse, paper wastes, shavings and sawdust, shrubs and generally any material derived from lignocellulose. These strains use the production of the metabolite of interest (especially D-lactate, L-lactate or ethanol) as the only way of regenerating the reducing power. The invention also refers to fermentation methods to produce these metabolites from media with a diversity of carbon sources, including glucose, lactose or xylose.
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