Patent ID: 6887498

Claim:
A method for making a Bowman-Birk product comprising: introducing and mixing acetone with acid extracted solubles from defatted soybeans wherein the amount of acetone is about two times (by weight) the amount of acid extracted solubles; allowing the acetone and acid extracted solubles mixture to settle for at least 1 hour to form a precipitate; separating the precipitate from the liquid by decantation; introducing and mixing acetone with the separated precipitate wherein the amount of acetone is about one half of the amount by weight utilized in the first mixing step; allowing the acetone and separated precipitate mixture to settle; separating the precipitate from the liquid by decantation; vacuum filtering the separated precipitate and drying the precipitate by air drying; dispersing the air dried precipitate in water; filtering the dispersion to remove insoluble materials; and spray drying the dispersion.