酸化乙醇法提取紫色小麦麸皮色素的工艺条件研究

Technological Conditions for Extraction of Pigment from Purple Wheat Bran by Acidified Alcohol

以紫色小麦麸皮为原料,通过单因素和正交试验,确定了酸化乙醇法提取紫色小麦麸皮色素的最佳工艺条件为:酸化乙醇浓度50%(pH=1.0),料液比1∶20,提取温度70℃,提取时间1.5 h。

The condition of extracting pigment from purple wheat bran with acidified alcohol were optimized through single- factor and orthogonal designed experiments. The obtained optimum extraction conditions are as follows： extracting solution concentration 50 % （pH = 1.0）, rate of material to solution 1 ： 20, extraction temperature 70 ℃, and extraction time 1.5 h.