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Method and system for production of zein and/or xanthophylls using chromatography

  • US 20090215990A1
  • Filed: 05/08/2007
  • Published: 08/27/2009
  • Est. Priority Date: 05/08/2006
  • Status: Active Grant
First Claim
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1. A process for producing zein and/or xanthophylls from corn, the process comprising:

  • extracting soluble compounds from a corn-based material with a solvent to provide a corn-solvent mixture, the soluble compounds comprising at least zein and xanthophylls;

    first separation of the com-solvent mixture into two streams, of which one stream is an extract containing substantially the zein, impurities, xanthophylls and solvent, wherein the impurities comprise substantially all components in the extract other than solvent, zein and xanthophylls, and another stream containing the remaining corn solids and solvent, said first separation comprising at least one of centrifugation, filtration, and membrane microfiltration;

    second separation to separate the zein from non-zein components in the extract comprising at least the impurities and/or xanthophylls, said second separation comprising chromatography based on a size-exclusion mechanism.

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