中文摘要：

采用同时蒸馏萃取法（SDE）分别提取多脉含笑、绢毛含笑和黄兰3种含笑植物叶的挥发油,运用毛细管气相色谱-质谱联用法结合计算机检索对其挥发油进行了化学成分分析。实验结果表明,多脉含笑共鉴定出20种化合物,占挥发性物质总含量的百分比为97.54%,主要成分为α-金合欢烯、β-橄榄烯、大根香叶烯B和朱栾倍半萜等;绢毛含笑共鉴定出36种化合物,占挥发性物质总含量的百分比为98.47%,主要成分为橙花叔醇、α-蒎烯、β-芳樟醇和二甲基-2,6-辛二烯醛等;黄兰鉴定出19种化合物,占挥发性物质总含量的95.93%,主要成分为大根香叶烯B、β-芳樟醇、罗勒烯、石竹烯、桉叶醇、β-榄香烯和异丁酸苯乙酯等;3种植物叶片挥发油主要成分含量差异较大。在3种含笑属植物叶中均含有很多高生物活性的物质,在香料工业及医药方面都有重要用途。

英文摘要：

In order to obtain a profound understanding of the development and use values of Michelia coriacea H.T.Chang et B.L.Chen,Michelia opipara H.T.Chang et B.L.Chen and Michelia champaca Linn.,the volatile oils from the leaves of the three species were extracted with SDE and their chemical components were analyzed by Gas Chromatography-Mass（GC-MS）.Among the results,a total of 20 compounds,accounting for 97.54% of its all volatile substances,were identified from Michelia coriacea H.T.Chang et B.L.Chen,whose main components are alpha-Farnesene,beta-Maaliene,germacrene B and Valencene;a total of 36 compounds,accounting for 98.47%,were identified from Michelia opipara Chang et B.L.Chen,whose main components are Nerolidol,alpha-Pinene,beta-Linalool and 2,6-Octadienal,3,7-dimethyl-3,7;a total of 19 compounds,accounting for 95.93%,were identified from Michelia champaca Linn.,whose main components are Germacrene B,beta-Linalool,Ocimene,Caryophyllene,Eucalyptol,β-elemene and Benzylcarbinyl isobutytate.The leaves of the three species contain many high bioactive compounds with very important uses for perfume and medicine industries.