Hydraulic cavitation was used to enhance reaction of modifying soybean protein by lauroyl chloride. Hydraulic cavitation enhancement equipment was designed. The effects of hydraulic cavitation pressure, hydraulic cavitation time, material-liquid ratio and hydraulic cavitation temperature on the yield of acylation product were researched by single factor experiment, and the conditions were optimized using response surface methodology, and the surface activity of the acylation product was determined. The results showed that the optimal conditions for acylation of soybean protein by lauroyl chloride were obtained as follows: hydraulic cavitation pressure 0.32 MPa, hydraulic cavitation time 56 min, material-liquid ratio 1.75∶?1, hydraulic cavitation temperature 57?℃. Under these conditions, the yield was 96.5%. The surface activity of the product was superior. |