Preparation of protein isolate from sunflower seed

Details Preparation of protein isolate from sunflower seed Preparation of protein isolate from sunflower seed

1983-07-15

1984-03-06

Schain, Howard E.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

426656, A23J 114

Patent

active

044353197

ABSTRACT:
A process for extracting protein from sunflower seed meal, which protein is free from dark or unacceptable colors. The process involves the sequential steps of (1) treating a suspension of sunflower seed meal with an acid at a pH of between 4.0 and 7.0; (2) separating the insoluble residue from the protein extract; (3) resuspending the insoluble residue and repeating steps (1) and (2) sequentially on the residue until the desired depletion of color has been achieved; (4) resuspending and treating the insoluble residue with an acid other than sulphuric acid at a pH<4.0; (5) separating the insoluble residue from the protein extract; (6) repeating steps (4) and (5) until the desired amount of protein has been extracted; and (7) combining the protein extract from steps (2), (3), (5) and (6) and recovering the protein therefrom by either precipitation with an acid or by ultrafiltration. The protein is of a quality making it suitable as a supplement in human nutrition.

REFERENCES:
patent: 3586662 (1971-06-01), O'Connor
patent: 3622556 (1971-11-01), O'Connor
patent: 3966971 (1976-06-01), Morehouse et al.
patent: 4212799 (1980-07-01), Nuzzolo et al.
J. of American Oil Chemists Society, 56, 438-442 (1979), Sosulski.
Cereal Chemistry, 25, 399-406 (1948), Smith et al.
Journal of Food Science, 35, 453-456 (1970), Gheyasuddin et al.

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