FIELD: treatment of soy materials.
SUBSTANCE: claimed method includes: a) preparation of soy material aqueous composition containing soy proteins, taint tincturing compounds and insoluble substances; b) soy protein solubilization by pH adjusting of composition from step a) in range of about 9-12 and releasing of abovementioned taint tincturing compounds; c) passing of aqueous composition having adjusted pH from step b) trough ultrafiltration membrane with cut-off molecular weight of about less than 5000 Da in such manner that taint tincturing compounds pass through membrane, whilst soy proteins are essentially held, d) recovering of held taint-less soy proteins.
EFFECT: soy materials having no compounds tincturing undesired color and taint thereto.
27 cl, 10 dwg, 12 ex
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