METHOD FOR THE PRODUCTION OF A FERMENTATION PRODUCT FROM LIGNOCELLULOSIC FEEDSTOCKS
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United States of America Patent
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Issued Date -
Jan 10, 2013
app pub date -
Feb 10, 2011
filing date -
Feb 10, 2010
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Abandoned
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Abstract
The present invention comprises pretreating a lignocellulosic feedstock with acid at a pH between about 2.0 and about 3.5 to produce a composition comprising an acid pretreated feedstock. The acid pretreated feedstock is then enzymatically hydrolyzed with cellulases and β-glucosidase. The glucose is fermented by microorganisms to produce a fermentation broth comprising the fermentation product, followed by recovery of the fermentation product. The steps of enzymatically hydrolyzing and fermenting are conducted at a pH below about 4.0.
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