Food or edible material: processes – compositions – and products – Products per se – or processes of preparing or treating... – Protein – amino acid – or yeast containing
Patent
1977-06-07
1979-04-24
Yoncoskie, Robert A.
Food or edible material: processes, compositions, and products
Products per se, or processes of preparing or treating...
Protein, amino acid, or yeast containing
426431, 426489, 426507, A23J 114
Patent
active
041513100
ABSTRACT:
A recovered soybean protein extract is disclosed containing at least 55 percent of soybean protein, on a dry solids basis, and from 2 to 32 percent of natural soybean oil, based on the weight of the protein. The remainder of the extract includes water, carbohydrates, minerals and proteinate salts. A method for recovering the soybean protein extract, whereby the oil and the protein are jointly separated from the soybean, is also disclosed. The method involves grinding cleaned and dehulled soybeans, slurrying the ground product in peroxide and water, and recovering a protein extract from the slurry by centrifugal processing. An isolate, protein content at least 85 percent, is obtained by adjusting the slurry pH to at least about 8 to solubilize the protein, removing the insolubles and free oil, and then precipitating the protein solids by lowering the pH to about 4.5; the precipitated protein is then recovered from the slurry. The protein and oil content of the extract may be varied through minor modifications to the above steps so as to produce oil-containing extracts having as low as 55 percent protein. Unexpectedly, the protein extract of the instant invention, notwithstanding an oil content of at least 2 percent, has been found to have an extended shelf life.
REFERENCES:
patent: 2881076 (1959-04-01), Sair
patent: 2928821 (1960-03-01), Chayen
patent: 3794735 (1974-02-01), Newsom et al.
patent: 3865802 (1975-02-01), Mustakas
patent: 3943266 (1976-03-01), Halik et al.
Cater, deceased Carl M.
Mattil Karl F.
Rhee Khee C.
The Andersons
Yoncoskie Robert A.
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