柠檬皮挥发性化学成份的气相色谱-质谱分析

GC-MS Analysis on Volatile Component of Citrus Fruit Peel

采用固相微萃取技术分离鲜柠檬皮中的挥发性成份,用GC-MS分析鉴定,对总离子流色谱的峰面积进行归一化定量,共签定了37种化合物,占总峰面积的99%以上,其中萜烯类化合物20种,醇类化合物7种,酯类化合物6种,醛类化合物2种,烯烃类化合物2种,最主要的成份是苎烯(51.99%),2-β-蒎烯(25.45%),α-松油烯(8.66%),橙花醇(5.40%)、柠檬醛(3.14%)等。比较了不同萃取头对取样效果的影响,聚乙二醇-二乙烯基苯纤维头顶空取样的萃取效果最令人满意。

The volatile chemical constituents of citrus fruit peel were analysised in this paper.37 volatile compounds were identified by SPME and GCMS.The result showed that the most predominant compound was DLlimonene (5199%),followed by 2βpinene (2545%),αterpinene (866%),Nerol (540%),and Citral (314%).With the comparation of different extration fibers,it is indicated that the SPME with 65 μm CWDVB fiber was optimal for solidphase microextraction.