Optimization of ultrsonic extraction technology of melberry anthocyanin by response surface methodology

The ultrsonic extraction technology of melberry anthocyanin was optimized by response surface methodology. On the basis of single factor experiment, according to the center combination experiment principle, the significance and interaction of various factors were analyzed by 3 factors and 3 levels response surface analysis. Result showed that the optimum ultrasonic extraction conditions of melberry anthocyanin were obtained as follows: ultrasonic time 20 min, ultrasonic temperature 50 ℃, ultrasonic power 430 W. Under this condition, the mullberry anthcyanins extraction yield was 5.768 1 mg/g.