Patent ID: 7560132

Claim:
A process of treating defatted oilseed, which comprises: (a) slurrying the defatted oilseed in water at a pH of 7-9 to create a slurry; (b) separating the slurry into a first solid product and a first predominantly liquid fraction, (c) adding sufficient alkaline compound to the first predominantly liquid fraction to increase its pH to in excess of pH 9, whereby a second solid product precipitates from said first predominantly liquid fraction, leaving an alkaline second liquid fraction, (d) separating out said precipitate from the predominantly liquid fraction, whereby to obtain a second solid product and a second liquid fraction, and (e) adding water and a sufficient amount of an acidic compound to said second solid product, to acidify the second solid product to a pH 1-5, whereby a portion of said second solid product dissolves in the water to form a third liquid and the remainder of the second solid product does not dissolve.