Abstract
The method of the invention uses raw corn, or a corn by-product as a source. The source is mixed with an alcohol to produce an alcohol-corn slurry. Centrifugation or filtration produces a clear filtrate from the alcohol-corn slurry. A membrane filtration step is then used to separate purified xanthophylls. Other steps may be combined with the basic process to produce additional corn products, such as oil and zein.
| Original language | English (US) |
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| U.S. patent number | 6169217 |
| Filing date | 10/20/99 |
| State | Published - Jan 2 2001 |