Canola protein product from supernatant

A process for the preparation of a canola protein product having an increased proportion of 2S canola protein, which comprises:

• (a) providing an aqueous solution of 2S and 7S proteins consisting predominantly of 2S protein,
• (b) heat treating the aqueous solution to cause precipitation of 7S canola protein,
• (c) removing degraded 7S protein from the aqueous solution, and
• (d) recovering a canola protein product having a protein content of less than about 90 wt % (N×6.25) d.b. and having an increased proportion of 2S canola protein.

A process for the preparation of a canola protein product having an increased proportion of 2S canola protein, which comprises:

• (a) providing an aqueous solution of 2S and 7S proteins consisting predominantly of 2S protein,
• (b) isoelectrically precipitating 7S protein from the aqueous solution,
• (c) removing precipitated 7S protein from the aqueous solution, and,
• (d) recovering a canola protein product having a protein content of less than about 90 wt % (N x 6.25) d.b. and having an increased proportion of 2S canola protein compared to the aqueous solution of 2S and 7S proteins.