芫荽籽精油的超临界CO_2萃取工艺研究及其成分解析

The process study and component analytical of coriander seed essential oil with supercritical CO_2 fluid extraction

通过正交实验考察了超临界二氧化碳萃取中萃取压力、萃取温度、萃取时间对芫荽籽精油萃取率的影响。结果表明各因素的影响顺序为:萃取时间>萃取温度>萃取压力;萃取的最佳工艺条件为:萃取压力18 MPa,萃取温度42℃,萃取时间140 min。此条件下芫荽籽精油的萃取率达到4.735%。并用GC/MS对其进行分离,首次对芫荽籽精油GC/MS色谱分离条件进行了探索,鉴定出36种化合物,共占芫荽籽精油含量的89.467%,其主要成分为芳樟醇、油酸、萜品烯、左旋-α-蒎烯、十六酸、樟脑等。

The orthogonal experiment was used to investigate the influence of extraction pressure,extraction temperature and extraction time on the extraction rate of coriander seed essential oil during the extraction of supercritical carbon dioxide.Results show that the influences of various factors in order are as follows：extraction time extraction temperature extraction pressure;the optimum technological conditions of extraction are as follows：extraction pressure：18 MPa,extraction temperature：42 ℃,extracting time：140 min.Under the condition,the extraction rate of coriander seed essential oil reaches 4.735%.Separated by GC/MS,the GC/MS chromatography separation condition of coriander seed essential oil was explored for the first time,36 compounds were identified,89.467% of the content of coriander seed essential oil.The main ingredients are linalool,oleic acid,terpinene,sinistrogyration-α-pinene,palmitic acid,camphor,etc.