Patent ID: 7297354

Claim:
A method of treating a proteinaceous soybean material to be utilized in an animal feed and having a first combined concentration of β-conglycinin and glycinin, the method comprising: combining the proteinaceous soybean material with an alkaline proteinase from Bacillus amyloliquefaciens to form a reaction mixture consisting of a single stage reaction wherein the single stage reaction period begins when the reaction mixture is formed, the reaction mixture initially having a pH of at least about 7.0 standard pH units and wherein the reaction period is about five minutes to about two hours; allowing the alkaline proteinase to hydrolyze the glycinin and β-conglycinin present in the reaction mixture at a temperature of about 60° C. or less to form a proteinaceous intermediate; and inactivating the alkaline proteinase present in the reaction mixture, defining an end of the single stage reaction period, under conditions sufficient to form a proteinaceous product, having a second combined concentration of β-conglycinin and glycinin, which is at least 92 percent less than the first combined concentration of β-conglycinin and glycinin.