Patent ID: 6313273
Filing Date: 2001-11-06
Classification: A23J,A23V

Abstract:
A process for the removal of isoflavones, phytate, and nucleic acids from soy protein comprising:a) contacting a source of soy protein with one or more enzymes possessing nuclease and phytase activity for a sufficient period of time to allow said enzymes to react with said source of soy protein;b) subjecting the soy protein source of step a) to ultrafiltration by passing said soy protein source through a metallic oxide ultrafiltration membrane at sufficient pressures, to maintain a permeability of the ultrafiltration membrane in the range of about 0.04 to 0.3 gallons/square feet/day (gfd), and for a sufficient period of time to create a retentate, containing soy protein;c) diluting said retentate with an aqueous solution to form a diluted retenate and passing said diluted retentate through a metallic oxide ultrafiltration membrane, and;d) collecting the diluted retentate, from which isoflavones, phytate, and nucleic acids have been removed.