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US 4,375,431 AGranted
Aluminum treated proteins
AssigneeA. E. Staley Manufacturing Company
InventorsMarion M. Bradford, Frank T. Orthoefer, Kenneth N. Wright
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AssigneeA. E. Staley Manufacturing Company
InventorsMarion M. Bradford, Frank T. Orthoefer, Kenneth N. Wright
Estimating the term…
Phytate-containing proteinaceous materials are treated with trivalent aluminum to alter the physical, chemical, metabolic, functional and nutritional values of the protein. Protein derived from phytate-containing seed materials treated with trivalent aluminum possess improved solvent solubility, protease digestability, reduced thermophiles and trypsin inhibition reduction, low viscosity, trace mineral bioavailability, etc. without requiring phytate or phytic acid removal. The aluminum treatment may be conducted at numerous protein manufacturing stages with a wide variety of different materials. Phytate-containing proteins may be effectively extracted at acid pH levels in the presence of trivalent aluminum without sacrificing recoverable protein yields.
A method for preparing a protein composition of an improved water-soluble protein content at a pH below the isoelectric precipitating pH of the protein from phytate-containing proteinaceous materials, said method comprising treating the phytate-containing proteinaceous material with at least 0.5 mole equivalent of trivalent aluminum for each mole of phytate contained within said material, converting the proteinaceous material with said trivalent aluminum into a protein composition having a measurably higher content of water-soluble protein below the isoelectric precipitating pH of the protein and recovering the protein composition.
In a proteinaceous material containing protein and phytate in the form of a protein-phytate complex which is insoluble in water at pH levels below the isoelectric precipitating pH for the protein, the improvement which comprises a proteinaceous material treated with a sufficient amount of trivalent aluminum to measurably increase the level of water-soluble protein at a pH below the isoelectric precipitating pH of the protein.
Dependencies are inferred from the claim text.