水蒸气蒸馏法提取柚子花精油工艺研究及其成分分析

以冻干柚子花为原料,采用单因素、响应面实验方法优化水蒸气蒸馏提取柚子花精油工艺,建立二次多项数学模型,得到水蒸气蒸馏法提取柚子花精油最优工艺参数:液料比16∶1、盐水浓度3.51%、蒸馏时间8.15 h,柚子花精油提取得率为0.3856%。采用GC-MS对水蒸气蒸馏法提取所得柚子花精油进行成分分析,共分离鉴定出50种化合物,占总萃取物的87.60%,其中主要成分为法呢醇、亚油酸乙酯、亚麻酸乙酯、棕榈酸乙酯、橙花叔醇等化合物。 

Study on the extracting process of essential oil from Citrus maxima flower by steam distillation and the analysis for the composition of the essential oil

The extraction condition of essential oil from freeze- dried Citrus maxima flower by steam distillation was studied by single factor experiment and further the response surface method.The optimum condition was obtained as follows: the liquid to solid ratio 16 ∶ 1,the concentration of salt solution 3.51%,extraction time 8.15 h. The extraction ratio was 0.3856%. The composition of essential oil from Citrus maxima flower by steam distillation was analyzed by GC- MS,a total of 50 compounds which accounted for 87.60% of the essential oil were identified including farnesol,ethyl linoleate,ethyl linolenate,ethyl palmitatethe,nerolidol as the main components.