Comparison of Volatile Oil's Components between Fructus Auranti Immaturus and Fructus Auranti by GC-MS Analysis

Objective To compare the components of volatile oil between fructus auranti immaturus and fructus auranti,which are from homologous plant of Poncirus trifoliata(Linn.)Raf.Methods Chemical components of volatile oils were analyzed by GC-MS,and the relative content of each component was calcu-lated by area normalization.Results The average extraction yield of volatile oils from fructus auranti im-maturus and fructus auranti were 0.64% and 1.01% respectively.8 compounds were identified in the volatile oil from fructus auranti immaturus.Most of the components were monoterpene and sesquiterpene.The main component was dl-Limonene(42.026%),the next were β-myrcene(23.988%),β-phellandrene(9.706%) and 1-phellandrene(12.026%).21 compounds were identified in the volatile oil from fructus auranti,including 10 monoterpene and sesquiterpene,10 aromatics compounds and 1 heterocyclic compound,and the contents of(-)-α-pinene(12.300%),β-caryophyllene(8.403%),1,8-cineole(7.843%) and β-citronellol(6.583%) were relatively higher.Conclusion There are significant differences in the contents and components of volatile oil between fructus auranti immaturus and fructus auranti,which are both from homologous plant of Poncirus trifoliata(Linn.)Raf.