怀山药多糖提取工艺研究

Study on Extraction Process of Huai Chinese Yam Polysaccharose

以怀山药为原料,采用水浸提的方法,分别从预处理方式、料液比、浸提时间、浸提次数、浸提温度、浸提pH值等因素来研究影响怀山药多糖提取率的条件,并通过正交试验优化了浸提条件,其最佳浸提条件为:打浆处理,浸提1次,浸提温度80℃,浸提时间2h,浸提pH值为7.0,料液比1∶30,所得的山药多糖含量最高。各因素的影响的主次关系为:pH>提取温度>提取时间>料液比。

Using Huai Chinese yam as raw material, the effects of pretreatment method, solid-liquid ratio, extrac- tion time, extraction times, extraction temperature and extraction pH on extraction rate in Huai Chinese yam polysaccharose were studied by water method in this paper. The optimal extracting conditions were obtained by or- thogonal experiment as follows ：beating pretreatment method, solid-liquid ratio 1：30, extraction time 2h, extraction times l, extraction temperature 80℃ and extraction pH 7.0. Under these conditions, high yield of polysaccharose was obtained. The primary-secondary effect between each factor as follows ：pH〉temperature〉time〉solid-liquid ratio.