title: [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%).
authors.affiliation: Guangdong College of Pharmacy, Guangzhou 510224.
authors.forename: Jipeng
authors.initials: J
authors.lastname: Luo
authors.forename: Xiaoling
authors.initials: X
authors.lastname: Guo
authors.forename: Yifan
authors.initials: Y
authors.lastname: Feng
mesh_terms: D052176:Azulenes; D003508:Cycloheptanes / Q000032:analysis; D008401:Gas Chromatography-Mass Spectrometry; D019686:Lamiaceae / Q000737:chemistry*; D009822:Oils, Volatile / Q000737:chemistry* / Q000302:isolation & purification; D018515:Plant Leaves / Q000737:chemistry; D018547:Plant Stems / Q000737:chemistry; D010946:Plants, Medicinal / Q000737:chemistry*; D012621:Seasons; D012717:Sesquiterpenes / Q000032:analysis*; D045789:Sesquiterpenes, Guaiane
chemical_list: D052176:Azulenes; D003508:Cycloheptanes; D009822:Oils, Volatile; D012717:Sesquiterpenes; D045789:Sesquiterpenes, Guaiane; C445979:beta-elemene; C019408:guaiene; C052983:patchouli alcohol