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Ethanol extraction of phytosterols from corn fiber

United States Patent

7,833,994
November 16, 2010
View the Complete Patent at the US Patent & Trademark Office
The present invention provides a process for extracting sterols from a high solids, thermochemically hydrolyzed corn fiber using ethanol as the extractant. The process includes obtaining a corn fiber slurry having a moisture content from about 20 weight percent to about 50 weight percent solids (high solids content), thermochemically processing the corn fiber slurry having high solids content of 20 to 50% to produce a hydrolyzed corn fiber slurry, dewatering the hydrolyzed corn fiber slurry to achieve a residual corn fiber having a moisture content from about 30 to 80 weight percent solids, washing the residual corn fiber, dewatering the washed, hydrolyzed corn fiber slurry to achieve a residual corn fiber having a moisture content from about 30 to 80 weight percent solids, and extracting the residual corn fiber with ethanol and separating at least one sterol.
Abbas; Charles (Champaign, IL), Beery; Kyle E. (Decatur, IL), Binder; Thomas P. (Decatur, IL), Rammelsberg; Anne M. (Decatur, IL)
Archer-Daniels-Midland Company (Decatur, IL)
11/ 084,933
March 21, 2005
STATEMENT OF FEDERALLY SPONSORED RESEARCH The U.S. Government has a paid-up license in this invention and the right in limited circumstances to require the patent owner to license others on reasonable terms as provided for by the terms of Award Number 04-03-CA-7060 awarded by U.S. DOE (Department of Energy).