초록 ▼

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

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 about 40.degree. F. to about 80.degree. 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.

대표청구항 ▼

[ What is claimed is:] [1.] A process for producing an isoflavone rich protein material, comprising:extracting a vegetable material containing protein and at least one isoflavone compound with an aqueous extractant having a pH above the isoelectric point of the protein and separating said extractant

[ What is claimed is:] [1.] A process for producing an isoflavone rich protein material, comprising:extracting a vegetable material containing protein and at least one isoflavone compound with an aqueous extractant having a pH above the isoelectric point of the protein and separating said extractant from insoluble vegetable materials to produce an extract containing said isoflavone(s) and said protein;adjusting the pH of the extract to about the isoelectric point of said protein to precipitate a protein material containing at least one isoflavone compound; andseparating said protein material from said extract at a temperature of about 40.degree. F. to about 80.degree. F. and avoiding washing of said separated protein material.