Isoflavone rich protein isolate and process for producing

Details Isoflavone rich protein isolate and process for producing Isoflavone rich protein isolate and process for producing

A - Human Necessities

23

J

A23J 1/14 (2006.01) A23C 11/10 (2006.01) A23J 1/00 (2006.01) A23L 1/30 (2006.01)

Patent

CA 2307064

A process for providing an isoflavone rich protein isolate is provided, along with the isoflavone rich protein isolate produced thereby. A vegetable material containing protein and at least one isoflavone compound is extracted with an aqueous extractant having a pH above the isoelectric point of the protein, and preferably an alkaline pH. The protein and isoflavones are extracted into the extractant, and the extractant containing the protein and isoflavones is separated from insoluble vegetable protein materials to form a protein extract. The pH of the protein extract is adjusted to about the isoelectric point of the protein to precipitate the protein. The extract containing the precipitated protein is cooled to a temperature of from 30°F to 90°F, and then the protein is separated from the extract. Washing of the separated protein is avoided, or, is conducted with minimum amounts of water. The cool separation temperatures and the low wash conditions unexpectedly significantly increase the concentration of isoflavones recovered in the separated protein.

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