Patent ID: 7687088

Claim:
A process of preparing a protein isolate, which comprises: (a) extracting an oil seed meal using an aqueous calcium chloride solution at an elevated temperature of about 45° C. to about 70° to cause solubilization of protein in said oil seed meal to form an aqueous protein solution while inhibiting the extraction of phytic acid from the oil seed meal into the protein solution, (b) separating the aqueous protein solution from residual oil seed meal, (c) increasing the protein concentration of the aqueous protein solution to a concentration of at least about 50 g/L while maintaining the ionic strength substantially constant to provide a concentrated protein solution, (d) diluting said concentrated protein solution into chilled water having a temperature below about 15° C. to cause formation of protein micelles, (e) settling the protein micelles to form an amorphous, sticky, gelatinous, gluten-like micellar mass, and (f) separating the protein micellar mass from supernatant having a protein content of at least about 90 wt % (N×6.25) on a dry weight basis.