水蒸气蒸馏法提取柚子花精油工艺研究及其成分分析

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

摘要: 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。

Abstract: 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.