不同采收期海南广藿香挥发油成分分析

目的:分析海南省万宁市不同采收期的广藿香挥发油成分。方法:GC/MS联用技术。结果:从茎油中分离出47个色谱峰,鉴定出28个化合物,占总量的81.92％;从叶油中分离出34个色谱峰,鉴定出18个化合物,占总量的74.94％。主要是单萜烯、倍半萜烯、醇类、酮类、醛类与烷酸类。含量超过1％的有10个化合物,以广藿香醇含量最高(茎油中含36.06％,叶油中占37.74％);茎油中含广藿香酮17.08％,而叶油中含量甚微(0.85％)。6～8月,含油率分别为0.8％、0.7％和0.6％,广藿香醇含量以7月最高(42.62％),6月稍低(40.84％),8月最低(31.40％);广藿香酮含量则以8月最高(5.13％),7月和6月相近(分别为2.19％和1.36％)。结论:海南产广藿香挥发油成分与广东湛江地区产的相似,以7月和6月采收较为合适。

Constituents Analysis on Volatile Oil of Pogostemon cablin from Different Collection Time Cultivated in Hainan

The constituents of the volatile oil of Pogostemon cablin collected from Wanning city, Hainan province and the influence owing to different collection time were undertaken by GC/MS combination technology. The results showed that main compounds was patchouli alcohol in stem oil and leaf oil, its contents were respectively 36.06% and 37.74%; pogostone was poor, its contents in stem oil and leaf oil were respectively 17.08% and 0.85%; the contents of ten compounds were over 1%, which was respectively beta-patchoulene, beta-elemene, transcaryophyllene, delta-guaiene, seychellene, alpha-patchoulene, aciphyllene, alpha-guaiene, patchouli alcohol and pogostone; the contents of volatile oil from June to August were respectively 0.8%, 0.7% and 0.6%; patchouli alcohol, higher in July and June(42.62% and 40.84%), lower in August(31.40%).