宽叶十万错多糖最佳提取工艺研究

Study on Extraction Technology of polysaccharide in Asystasia gangetica(L.)T.Anders

研究了宽叶十万错[Asystasia gangetica(L.)T.Anders.]多糖最佳提取工艺,探讨了液固比、提取温度、提取时间、醇沉浓度等理化因素对宽叶十万错多糖提取效果的影响。确定宽叶十万错多糖的最佳提取工艺参数为:液固比25∶1,提取温度95℃,提取时间4 h,醇沉终浓度为80%,宽叶十万错多糖的提取率为4.71%。

The effects of some physical and chemical factors,such as solvent-solid ratio,temperature,time and ethanol,on the extraction of polysaccharide in Asystasia gangetica（L. ）T. Anders was investigated. According to orthogonal design, the optimum conditions for the extraction of polysaccharide were as follow： 25：1 of solvent -solid ratio,95 ℃ ,4 h,3 times of ethanol volume for precipitating coarse polysaccharide. The extraction yield of rude polysaccharide was 4.71%.