METHOD OF SOYBEAN PROTEIN PRODUCT PREPARING Russian patent published in 2001 - IPC

FIELD: food industry. SUBSTANCE: invention relates to production of protein foodstuffs from soybean. The parent raw is the oil cake in the form of partially defatted meal or groats (fat content is 5-12%) prepared in auger press from soybeans treated preliminary by dry extrusion method. Obtained soybean oil cake is treated with hydrochloric or other acid at pH 4.4-4.5 and hydromodulus = = (1:6)-(1:10) at temperature of extractive medium 40-60 C for 30-60 min. Then solid and liquid phases are separated and solid precipitate is washed with water at temperature 15-60 C. Washed concentrate is neutralized with alkaline or alkaline-earth metal, for example, sodium hydroxide to pH 6.8-7.2 followed by homogenization to homogeneous state and then dried in spraying dryer or other type dryer. Method provides regulation of residual content of lipids in ready product. EFFECT: improved method of preparing. 1 tbl, 2 ex