[Constituents analysis on volatile oil of Pogostemon cablin from different collection time cultivated in Hainan].

Abstract

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%).