Acid fungal protease in fermentation of insoluble starch substrates
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United States of America Patent
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Dec 13, 2011
Grant Date -
Dec 24, 2009
app pub date -
Jun 16, 2009
filing date -
Dec 30, 2004
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Abstract
The invention is directed to methods of producing ethanol and decreasing residual starch production in a no cook fermentation comprising contacting granular starch containing substrates with a granular starch hydrolyzing enzyme, a protease, and a fermenting microorganism under suitable fermentation conditions at a temperature below the starch gelatinization temperature of the starch substrate to produce ethanol, wherein the ethanol production is increased and the amount of residual starch is decreased compared to a substantially similar method conducted without the protease.
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