Patent ID: 7981450

Claim:
A process for the preparation of a canola protein isolate having an increased proportion of 2S canola protein, which comprises: (a) providing an aqueous solution of 2S and 7S canola proteins consisting predominantly of 2S canola protein which is supernatant, partially concentrated supernatant or concentrated supernatant from canola protein micelle formation and precipitation, (b) isoelectrically precipitating 7S canola protein from the aqueous solution, (c) removing precipitated 7S canola protein from the aqueous solution, and (d) recovering from the aqueous solution a canola protein isolate having a protein content of at least about 90 wt % (N×6.25) d.b. and having an increased proportion of 2S canola protein compared to the aqueous solution of 2S and 7S canola proteins.