中心组合设计法优化玉米黄色素提取工艺

Optimization of extracting process of maize yellow pigment from corn gluten by central composite design

在单因素试验的基础上,采用中心组合设计法设计试验,用统计软件SASV9.0进行模拟得到二次多项式回归方程预测模型。以玉米黄色素试验液的吸光度值为主要考察指标,对浸提条件进行优化,最终确定了玉米黄色素的最佳提取工艺为:温度67.4℃,时间95min,液料比20.5∶1。

Basiced on the single factor experiments, the extracting process of maize yellow pigment from corn gluten is optimized by central composite design and SAS 9.0 software, according to the absorbency of maize yellow pigment test liquid. The best condition is 67.4 ℃ of extracting temperature, extracting for 95 minutes, 20.5 ： 1 of the ratio of anhydrous ethanol and corn gluten.