US RE50,567 E1
Fermentation product production processes
Mads Torry Smith, Raleigh, NC (US); John Ress, Youngsville, NC (US); Kevin S. Wenger, Rolesville, NC (US); and Rikke Monica Festersen, Herlev (DK)
Assigned to Novozymes North America Inc., Franklinton, NC (US)
Appl. No. 17/981,168
Filed by NOVOZYMES NORTH AMERICA INC., Franklinton, NC (US)
PCT Filed Feb. 7, 2006, PCT No. PCT/US2006/006966
§ 371(c)(1), (2), (4) Date Sep. 24, 2007,
PCT Pub. No. WO2006/086792, PCT Pub. Date Aug. 17, 2006.
Application 17/981,168 is a reissue of application No. 11/814,304, filed on Feb. 7, 2006, granted, now 7,820,419, issued on Oct. 26, 2010.
Claims priority of provisional application 60/651,001, filed on Feb. 8, 2005.
Int. Cl. C12P 7/06 (2006.01); C12P 19/14 (2006.01)
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. ]