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Zein recovery using non-porous membranes

United States Patent

January 25, 2005
View the Complete Patent at the US Patent & Trademark Office
A membrane process for treating zein solutions to increase the zein concentration in the solution. The process uses a non-porous membrane that preferentially permeates the solvent and rejects the zein. Optionally, the process can be operated as a diafiltration process to yield a concentrate of high zein purity.
Mairal; Anurag P. (Fremont, CA), Ng; Alvin (Palo Alto, CA), Wijmans; Johannes G. (Menlo Park, CA)
Membrane Technology and Research, Inc. (Menlo Park, CA)
10/ 437,589
May 14, 2003
This invention was made in part with Government support under award numbers DE-FG03-98ER82617 and DE-FG36-02GO12057, both awarded by the Department of Energy. The Government has certain rights in this invention.