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Recovery of protein, protein isolate and/or starch from cereal grains

  • US 5,410,021 A
  • Filed: 09/01/1992
  • Issued: 04/25/1995
  • Est. Priority Date: 03/02/1990
  • Status: Expired due to Term
First Claim
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1. A process for recovering protein from cereal grains containing starch and protein bound into a matrix, the process comprising the steps of:

  • grinding said grains to a particle size appropriate for introduction to a wet attrition mill;

    defatting said grain;

    wet attrition milling particles of said grain to a size sufficiently small to break the bond between starch and protein, thenextracting the broken bond protein from the starch with at least one solvent, thenseparating the resulting high liquid content portion containing the extracted protein from the resulting high solids content portion containing the starch, and thensubjecting the high liquid content portion containing the extracted protein to continuous cross-flow microfiltration with inorganic membranes for isolating the protein constituent,concentrating the protein constituent into a dry powder.

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