溶剂法提取长柄扁桃油的工艺研究

摘要

In order to research the optimal process of the extraction of Amygdalus pedunculata Pall.oil by solvent method, effects of three variables (temperature, time, solid-liquid ratio) were studied.The optimal conditions were as follows, ratio of material to solveat:1 to 5 ,temperotue: 75℃ and time of extraction:0.5 h.The primary and secondary relationship of the three variables was in order of solid-liquid ratio ＞time＞ temperature.Meanwhile, composition of the oil was determined by GC.Oleic and linoleic acid was the main components in the oil.%采用石油醚为溶剂,提取长柄扁桃油.通过单因素试验分析了温度、时间、料液比对提取率的影响,并在此基础上通过正交试验优化提取工艺.结果表明,最优提取工艺为:料液比1∶5,提取温度75℃,提取时间每次0.5 h,提取1次.三因素主次关系为:料液比＞时间＞温度.同时利用气相色谱(GC)测定了长柄扁桃油的脂肪酸组成,表明长柄扁桃油中以油酸和亚油酸含量为主.