title: [Investigation on the influential factors of the volatile oil and main constituent content in Pogostemon cablin].
abstract: OBJECTIVE
  To provide scientific basis for quality evaluation by investigating the influential factors of the volatile oil and main constituent content in Pogostemon cablin.
  
  
  METHODS
  Several experiments were carried out to test different habitats, collection periods, processing methods, the level of spreading manure and using agricultural chemical with the volatile oil assay of pharmacopoeia and GC-MS method.
  
  
  RESULTS
  The effect of different habitats, collection periods, processing methods on volatile oil and main constituent content was shown significantly.
  
  
  CONCLUSIONS
  Such factors as different habitats, collection periods, processing methods should be taken into account when the quality standard of medicinal materials was made.
authors.affiliation: Guangzhou University of Traditional Chinese Medicine, Guangzhou 510405, China. xidili@public.guangzhou.gd.cn
authors.forename: Wei
authors.initials: W
authors.lastname: Li
authors.forename: Gang
authors.initials: G
authors.lastname: Wei
authors.forename: Chao-mei
authors.initials: CM
authors.lastname: Pan
authors.forename: Xiang-xiang
authors.initials: XX
authors.lastname: Liu
authors.forename: Sheng
authors.initials: S
authors.lastname: Huang
authors.forename: Hong-hua
authors.initials: HH
authors.lastname: Xiu
mesh_terms: D017753:Ecosystem; D019686:Lamiaceae / Q000737:chemistry*; D009822:Oils, Volatile / Q000032:analysis / Q000737:chemistry / Q000302:isolation & purification*; D035261:Plant Components, Aerial / Q000737:chemistry; D010946:Plants, Medicinal / Q000737:chemistry*; D011786:Quality Control; D012621:Seasons; D012717:Sesquiterpenes / Q000032:analysis; D013678:Technology, Pharmaceutical / Q000379:methods
chemical_list: D009822:Oils, Volatile; C483658:Pogostone; D012717:Sesquiterpenes; C052983:patchouli alcohol