Abstract
Methods and systems for obtaining zein and/or xanthophylls in highly pure form. Zein is first extracted from corn using aqueous ethanol. Suspended corn solids are separated, and the resulting extract is purified in a single size-exclusion chromatography step to separate impurities and produce substantially purified zein. The chromatography step may simultaneously produce substantially purified xanthophylls.
Original language | English (US) |
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U.S. patent number | 8236929 |
Filing date | 5/8/07 |
State | Published - Aug 7 2012 |