CPC C12P 7/06 (2013.01) [C12P 19/14 (2013.01); Y02E 50/10 (2013.01)] | 14 Claims |
[ 20. A process for producing fuel ethanol, comprising
(a) liquefying a gelatinized starch-containing material with an alpha-amylase to form a liquefied mash comprising dextrins and protein, and degrading the protein with a protease, at a temperature above the initial gelatinization temperature of the starch-containing material, wherein the starch-containing material is corn;
(b) subsequent to step (a), simultaneously saccharifying the dextrins in the presence of a glucoamylase to produce fermentable sugar and fermenting the fermentable sugar in the presence of a fermenting organism to produce a fermentation product; and
(c) distilling the fermentation product to recover fuel ethanol. ]
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