title: [Volatile Oil Analysis of Piper hongkongense form Different Hatbitats by GC-MS].
abstract: OBJECTIVE
  To analyze the volatile oil in Piper hongkongense from five different habitats.
  
  
  METHODS
  The volatile oil was analyzed by GC-MS.
  
  
  RESULTS
  The volatile components oil of each sample varied significantly. Caryophyllene, α-caryophyllene and nerolidol 2 were common constituents of five samples. The volatile oil and chemical constituent contents of fresh sample were higher than that of the old sample.
  
  
  CONCLUSIONS
  The volatile oil and chemical constituent contents of Piper hongkongense from different habitats have sig- nificant differences, which are affected by habitats, harvest season, storage time and so on.
authors.forename: Yi
authors.initials: Y
authors.lastname: Cai
authors.forename: Feng-feng
authors.initials: FF
authors.lastname: Xie
authors.forename: Ping-hua
authors.initials: PH
authors.lastname: Yan
authors.forename: Ri-cheng
authors.initials: RC
authors.lastname: Gan
authors.forename: Hua
authors.initials: H
authors.lastname: Zhu
mesh_terms: D017753:Ecosystem; D008401:Gas Chromatography-Mass Spectrometry; D000081222:Monocyclic Sesquiterpenes; D009822:Oils, Volatile / Q000737:chemistry*; D031701:Piper / Q000737:chemistry*; D010938:Plant Oils / Q000737:chemistry*; D000081223:Polycyclic Sesquiterpenes; D012717:Sesquiterpenes
chemical_list: D000081222:Monocyclic Sesquiterpenes; D009822:Oils, Volatile; D010938:Plant Oils; D000081223:Polycyclic Sesquiterpenes; D012717:Sesquiterpenes; C042686:humulene; C024714:caryophyllene; C037055:nerolidol