Acid fungal protease in fermentation of insoluble starch substrates

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...

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Bibliographic Details
Main Authors Duan, Gang, Dunn-Coleman, Nigel, Lantero, Oreste, Pilgrim, Craig E, Shetty, Jayarama K
Format Patent
LanguageEnglish
Published 13.12.2011
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Summary: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.