超临界流体萃取川芎挥发油及其成分分析

建立超临界流体萃取技术（Supercritical fluid extraction,SFE)提取川芎根茎挥发油的方法，并采用气相色谱－质谱法（GC／MS），对所得挥发油进行化学成分分离和鉴定，通过标准图谱对照确定化合物名称，鉴定了44种成分，同时采用水蒸汽蒸馏法提取川芎根茎挥发油，比较得油率，考察超临界流体萃取技术的萃取效率，SFE和水蒸汽蒸馏法的得油率分别为4．16％和0．8％，结果表明SFE比水蒸汽蒸馏法萃取效率高，操作简单，省时快速，对热不稳定性物质尤为适用，是提取，研究中药化学成分的有效方法。

Supercritical Fluid Extraction of Essential Oil from Dry Rhizome of Ligu-sticum chuanxiong Hort and Their Characterizationby GC/MS

Supercritical fluid extraction (SFE) of essential oil from dry rhizome of Ligusticum chuanxiong Hort was developed. GC/MS was used for the determination of the composition of essential oil. Forty-four compounds were identified. The conventional extraction method was conducted in parallel for comparison. The extracts were qualitatively compared by GC/MS. The yields of SFE and steam distillation-extraction were 4.16%(v/w) and 0.8%(v/w), respectively. Application of SFE of essential oil from dry rhizome of Ligusticum chuanxiong Hort was preferable.