Membrane based canola protein isolation

Essential Amino Acid Composition of Products of Membrane-Based Canola Protein Isolation (g/100 g Protein)... 

So far, two processes involving membrane separation for canola protein isolation are considered promising, and both are currently under commercial development Researchers at the University of Toronto developed a membrane-based process for canola protein isolation from defatted meal [29,42], in which, after precipitation, the soluble proteins were ultraflltered to be concentrated and diaflltered for purification. Two protein isolates were produced precipitated and soluble, with a combined protein recovery of more than 70% of total meal protein. Both products were high in protein (>85%), low in phytates (<1%), essentially free of glucosinolates (<2 (xmol/g) and had desirable functional properties comparable to those of soy protein. While the methionine content of both protein isolates was similar to the reported values, the soluble product was found to have a higher level of lysine than any canola proteins obtained before, and the precipitated protein isolate was, on the other hand, farther enriched with leucine [43]. This amino acid composition makes them suitable for nse in infant formulae (Table 4.6). Despite their excellent nutritive quality. 

FIGURE 4.8 Membrane-based process for canola protein isolation. (From Jones, J. D. and Holme, J. 1979. Oilseed processing. US Patent 4,158,656 Diosady, L. L., Xu, L. and Chen, B. K. 2005. Production of high-quality protein isolates from defatted meals of Brassica seeds. US Patent 6,905,713. With permission.)... 

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