Optimization of ultrasonic extraction of zein from corn gluten meal by response surface methodology
Response surface methodology was used to optimize the extraction processing of zein from corn gluten meal.Based on the analysis of significance of four factors and cross-interaction among factors,the results showed that the optimal extraction conditions were as follows: ultrasonic treatment time was 27 min,ultrasonic power was 480 W and alcohol concentration was 70% with the ratio of liquid to material 10:1(mL/g).Under the optimal extraction conditions,the extraction rate of zein was up to 70.71% and the purity was 90.33%.