石榴渣多酚类物质提取工艺研究

以石榴渣为原料,研究了提取溶剂及其浓度、浸提温度、浸提时间和料液比对多酚提取效果的影响,并通过正交试验对4因素影响下的提取工艺进行了优化,确定了石榴渣多酚乙醇提取的最优工艺为:乙醇体积分数50%,浸提温度60℃,料液比1:20,浸提时间4h,以此优化工艺进行试验,一次提取得率为0.51%,二次提取得率为0.69%。超声波辅助提取的最佳处理时间为30min,提取2次,多酚得率为0.79%。原料干燥方式采用烘箱干燥较好。该工艺具有一定的实用性和可行性。

Extraction Process of Polyphenols in Pomegranate Pomace

In this paper,the extraction process of polyphenols from pomegranate pomace is studied.The results show that the best extraction conditions are as follows:alcohol concentration 50%,temperature 60 ℃,Solid-Liquid Ratio 1:20,and extraction time 4 h,extracting twice.Using this process,the pomegranate pomace polyphenols yield is 0.69%.Ultrasonic-assisted extraction conditions are that the best processing time is 30 min,extracting twice,with a polyphenols yield of 0.79%.The drying method of raw materials use oven drying.This process has a certain practicality and feasibility.