女贞苦丁茶挥发油成分分析

The volatile oils of the three kinds of kudingcha 〔young shoots from Ligustrum henryi Hemsl., young shoots and mature leaves from L. robustrum (Roxb.) Bl.〕 were extracted with simultaneous steam distillation extract(SDE) and analyzed and identified by GC-MS. 82 constituents had been identified out of the volatile oils. The major constituents were linalool, alloaromadendrene, gerenial, cedrol, 2-(1,1-dimethylethyl)-phenol, 3,7-dimethyl-1,6-octadien-3-ol, (+)-α-terpineol, γ-elemene, citral and phytol, etc.

GC法同时测定粗壮女贞苦丁茶中4种挥发性成分

目的建立同时定量测定水蒸气蒸馏法提取的粗壮女贞挥发油中芳樟醇、α-松油醇、β-月桂烯和D-柠檬烯的方法。方法采用毛细管气相色谱法,色谱柱为Agilent DB-17柱(30 m×0.25 mm,0.25μm);程序升温方式,初始柱温为60℃,以3℃/min上升至75℃,保持5 min,以5℃/min上升至85℃,保持3 min,再以8℃/min上升至117℃,保持5 min,最后以50℃/min上升至240℃;进样口温度250℃;检测器FID;检测器温度300℃;载气为氮气,体积流量为1.0 mL/min;分流比为4∶1。结果芳樟醇、α-松油醇、β-月桂烯和D-柠檬烯分别在181.2～6 525μg/mL,84.4～3 036μg/mL,2.700～95.4μg/mL和4.000～144.0μg/mL范围内线性关系良好,平均回收率分别为100.5%,97.4%,95.7%,95.5%,RSD分别为1.7%,1.3%,1.8%,1.1%。结论该方法简便、快速、准确,可用于同时测定粗壮女贞中4种挥发油成分。