System and method for isolation of gluten as a co-product of...

Chemistry: natural resins or derivatives; peptides or proteins; – Proteins – i.e. – more than 100 amino acid residues – Separation or purification

Reexamination Certificate

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Details

C530S413000, C530S350000, C530S300000

Reexamination Certificate

active

07829680

ABSTRACT:
The present invention is a method for protein isolation as a co-product of alcohol production. The method includes receiving grain product at a holding receptacle, the grain product being at least one of whole stillage, dried distillers grain, and wet distillers grain. The method further includes directing the grain product from the holding receptacle over a plurality of screens, thereby allowing a fiber-containing portion of the grain product to be collected on the plurality of screens and further allowing a protein-containing portion of the grain product and an oil-containing portion of the grain product to pass through the plurality of screens. The method further includes directing the protein-containing portion and the oil-containing portion over a finishing screen, thereby allowing remaining fiber fractions from the protein-containing portion and the oil-containing portion to be collected on the finishing screen and further allowing the protein-containing portion and the oil-containing portion to pass through the finishing screen. Further, the method includes centrifuging the protein-containing portion and the oil-containing portion for isolating a protein fraction, an oil fraction, and a water and minerals fraction.

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