顶空-气质联用法测定柠檬香茅叶片和叶中脉的挥发性成分

Analysis of Volatile Components in Cymbopogon Citratus Leaves and the Midvein of Leaves by Headspace GC-MS

为更好地开发利用柠檬香茅,采用顶空气质联用法测定柠檬香茅叶片(去除叶中脉)和叶中脉的挥发性成分。结果表明:柠檬香茅叶片(去除叶中脉)共检测出27种挥发性成分,其中香叶醇含量(30.44%)最高,香茅醛(27.60%)次之,橙花醛(19.69%)第3;柠檬香茅叶中脉共检测出17种挥发性成分,其中香叶醇含量(51.52%)最高,香茅醛(15.69%)次之,橙花醛(11.15%)第3;从柠檬香茅叶(去除叶中脉)和叶中脉的挥发性成分检测结果可知,共检测出16种挥发性成分,主要成分的组成差别不大,均以醇类、醛类和烯烃类物质为主。

In order to better develop and utilize Cymbopogon Citratus,the method of headspace extraction-gas chromatography-mass spectrometry was used to analysis the volatile components of Cymbopogon Citratus leaves(removing the midvein of leaves)and the midvein of leaves.The results showed that a total of 27 volatile components were detected in Cymbopogon Citratus leaves(removing the midvein of leaves),among which the content of geraniol was the highest(30.44%),the content of citronellal was the second(27.60%),and the content of neral was the third(19.69%).A total of 17 volatile components were detected in the midvein of Cymbopogon Citratus leaves,among which the content of geraniol was the highest(51.52%),the content of citronellal was the second(15.69%),and the content of neral was the third(11.15%).According to the volatile components of Cymbopogon Citratus leaves(removing the midvein of leaves)and the midvein of leaves,a total of 16 volatile components were detected,and there was not much difference in the composition of the main components,which were mainly alcohol,aldehydes and olefins.