PRODUCTION OF SOYA PROTEIN PRODUCT BY WAY OF CALCIUM CHLORIDE EXTRACTION (S702/S7300/S7200/S7301) Russian patent published in 2014 - IPC A23J3/16 A23J1/14 A23L2/39 

FIELD: food industry.

SUBSTANCE: one extracts the soya protein source with a water solution of a calcium salt. A water solution of soya protein is separated from the soya protein source and concentrated with usage of a selective membrane method with constant ionic strength preservation. A stage of the concentrated soya protein solution diafiltration is optionally possible. One performs the soya protein solution drying or dilution of the concentrated soya protein solution with water to form a sediment, the sediment separation from water for dilution and drying of the separated sediment where the concentrated and optionally diafiltered soya protein solution is acidified until pH is 2.5-4.4 prior to dilution, separation and drying; alternatively, acidification of the mixture of the sediment and water for dilution and re-dissolution of the soya protein so that to form a clear soya protein solution, concentration of such a clear acidified soya protein solution with usage of the selective membrane method with essentially constant ionic strength preservation; then one proceeds with optional diafiltration of the soya protein solution and the soya protein solution drying. The soya protein product may be represented by a powered beverage mixed with water-soluble powdered substances for the production of water solutions of such a mixture. An acidic solution with the soya protein product dissolved therein represents the beverage. The soya protein product has the protein content of no less than 60% (N×6.25) in terms of dry weight.

EFFECT: group of inventions ensures the production of a product solvable in acidic media forming clear solutions with low pH that are resistant to exposure to high temperatures; it may be used in beverages where the protein sedimentation is excluded.

20 cl, 27 tbl, 11 ex