The action of impinging stream and jet cavitation was used to strengthen the dissolution of soy bean protein. The single factor experiment and response surface methodology were used to optimize the dissolution conditions of soybean protein by impinging stream and jet cavitation. The surface activity of soybean protein solution was also determined. The results showed that the optimal conditions were obtained as follows: impinging stream and jet cavitation pressure 0.45 MPa, impinging stream and jet cavitation time 65 min, impinging stream and jet cavitation temperature 58?℃, inlet angle-outlet angle 30°-40°, ratio of material to liquid 1.5∶?100. Under the optimal conditions, the solubility of soybean protein increased from 0.780 mg/mL to 1.737 mg/mL. The water-soluble soybean meal protein prepared by impinging stream and jet cavitation had certain surface activity. |