Membrane process for extracting soybean protein peptide and technique of deep processing byproduct
A technology of soybean protein peptides and by-products, applied in vegetable protein processing, chemical instruments and methods, peptide sources, etc., can solve functional problems such as gel emulsifying, oil absorption, water retention, dissolving foaming and foam stability It can improve the oil absorption, simplify the production process and increase the work efficiency.
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[0018] A method for deep processing of soybean protein peptide and its by-products extracted by membrane method, the method comprises the following steps:
[0019] 1) The low-temperature soybean meal is extracted with dilute lye solution for 10-20 hours, the lye solution material-to-liquid ratio is 1:10-20 by weight, and the pH value is 7.5-9. Membrane ultrafiltration to separate whey solution and protein solution;
[0020] 2) The protein solution is subjected to instantaneous sterilization at a temperature of 105-115° C. and a time of 3-5 seconds, and the protein solution is homogenized after the sterilization;
[0021] 3) Concentrating the homogenized protein solution and spray-drying to obtain finished soybean protein isolate;
[0022] 4) adding protease hydrolysis to the homogenized protein solution, hydrolyzing for 10 hours, then using polysulfone membrane ultrafiltration after hydrolysis, concentrating the filtrate, and drying to obtain soybean protein peptide;
[0023...
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