MODIFIED VEGETABLE PROTEIN HAVING LOW LEVELS OF PHYTIC ACID, ISOFLAVONES, AND ASH

摘要

Among the various aspects of the invention is a vegetable protein composition having an isoflavone content of less than 0.6 mg aglycone per gram vegetable protein, a ribonucleic acid (RNA) content of at least about 5000 mg/kg, a total inositol phosphate content measured as the sum of an inositol-6-phosphate (IP6) content, an inositol-5-phosphate (IP5) content, an inositol-4-phosphate (IP4) content, and an inositol-3-phosphate (IP3) content of less than about 8 µmol per gram vegetable protein, and less than 0.4 wt.% phytic acid based on the total weight of the vegetable protein composition. Yet another aspect of the present invention is a process for making a vegetable protein composition from a protein-containing material comprising the steps of treating a vegetable protein curd with a phytase enzyme not having protease side activity to form a phytase-treated vegetable protein material; and solubilizing and separating the phytase-treated vegetable protein material to form the vegetable protein composition. The weight ratio of an aqueous extractant to the protein-containing material for the process is from 16:1 to 70:1.