Method for improving oil yield by regulating soybean endogenous enzyme activity and preparing fishy-smell-free soybean protein isolate with high emulsibility

The invention discloses a method for improving oil yield by regulating soybean endogenous enzyme activity and preparing fishy-smell-free soybean protein isolate with high emulsibility, and belongs to the technical field of food processing. The method mainly comprises the following steps: carrying out heat shock on soybeans, soaking the soybeans in a compound enzyme to control the water absorption rate, carrying out secondary heat shock, and carrying out speed-controlled and temperature-controlled drying, so as to achieve various purposes of destroying cell wall structures to accelerate the water absorption of seeds, regulating and controlling the endogenous enzyme activity of the soybeans, carrying out in-situ enzymolysis on oleosin and the like; the oil yield is obviously improved. Besides, the activity of soybean endogenous protease is activated to the maximum extent through step-by-step heat shock treatment, the activity of lipoxygenase is inhibited by regulating and controlling the relationship between he