title: [Variation and regularity of volatile oil constituents in fruits of national medicine Cinnamomum migao].
abstract: OBJECTIVE
  To compare the constituents of the volatile oil in Cinnamomum migao from different regions of southwest in China in order to evaluate the quality of C. migao.
  
  
  METHODS
  GC-MS was employed to analyze the constituents of the volatile oil in C. migao.
  
  
  RESULTS
  The volatile oil compositions of C. migao collected from 27 of cultivation regions were obviously different. Based on the chemical differences of the volatile oil compositions, C. migao was divided into four chemotype, they were eucalyptol, eucalyptol -cyclohexene, eucalyptol -alpha-terpineol, and eucalyptol -sabinene. The eucalyptol-type was cultivated in Luodian, guizhou province and Funing regions, Yunan province. The eucalyptol-cyclohexene-type was cultivated in Zhengfeng and Wangmo regions, Guizhou province. The type of eucalyptol, eucalyptol -sabinene and eucalyptol -alpha-terpineol were cultivated in Ceheng and Libo regions, Guizhou province.
  
  
  CONCLUSIONS
  Combined with the geographical distribution, It is indicated that the volatile oil compositions in fruit of C. migao may have some relations to the specie itself characteristics and different elevations environment.
authors.affiliation: Guiyang College of Traditional Chinese Medicine, Guiyang 550002, China. taozhou88@163.com
authors.forename: Tao
authors.initials: T
authors.lastname: Zhou
authors.forename: Zhannan
authors.initials: Z
authors.lastname: Yang
authors.forename: Weike
authors.initials: W
authors.lastname: Jiang
authors.forename: Qiang
authors.initials: Q
authors.lastname: Ai
authors.forename: Peiguo
authors.initials: P
authors.lastname: Guo
mesh_terms: D027424:Cinnamomum / Q000737:chemistry*; D004365:Drugs, Chinese Herbal / Q000737:chemistry*; D005638:Fruit / Q000737:chemistry*; D009822:Oils, Volatile / Q000032:analysis*
chemical_list: D004365:Drugs, Chinese Herbal; D009822:Oils, Volatile