title: [Characterization of chemical components of essential oil from flowers of Chrysanthemum morifolium produced in Anhui province].
abstract: OBJECTIVE
  To analyze the chemical components of the essential oil extracted from six cultivars' Juhua (Zaogongju, Wangongju, Huangyaoju, Chuju, Xiaoboju and Daboju) produced in Anhui province of China, which were breed from Chrysanthemum morifolium, and to provide scientific basis for quality control.
  
  
  METHODS
  The essential oils of the six cultivars'Juhua were extracted by water-steam distillation and separated by GC capillary column chromatography. The components were quantitatively determined with normalization method, and identified by GC-MS.
  
  
  RESULTS
  From Zaogongju, Wangongju, Huangyaoju, Chuju, Xiaoboju and Daboju, 247, 226, 246, 182, 216 and 122 chromatographic peaks were detected, among them 75, 54, 78, 50, 53 and 43 components were identified,which were composed of 85.67%, 82.80%, 81.38%, 73.22%, 71.51% and 72.87% of the total essential oil, respectively.
  
  
  CONCLUSIONS
  Monoterpenoid compounds were higher more than sesquiterpenoid compounds in the five juhua except for Chuju. There was no difference in the constituents of essential oil of Zaogongju and Wangongju. And verbenyl acetate was the main chemical constituent and composed of 32.10% and 37.85% of the total essential oil, respectively. (1R)-Camphor and bisabolol oxide A were the main chemical constituents in Huangyaoju, which were composed of 28.70% and 12.58% of the total essential oil, respectively. beta-Selinene and borneol were the main chemical constituents in Chuju, which were composed of 17.85% and 12.84% of the total essential oil, respectively. Eucalyptol was the main chemical constituent in Xiaoboju, which were composed of 21.33%. Verbene oxides and chrysanthenone were composed of 25.32% and 8.26% of the total essential oil, respectively, in the Daboju. The common chemical constituents were camphene, borneol, bornyl aceate, (1R)-camphor, (-)-4-terpineol, alpha-terpineol, eucalyptol, cis-caryophyllene, caryophyllene oxide, juniper camphor, beta-sesquiphellandrene, alpha-curcumene and beta-farnesene in the six cultivars' Juhua produced in Anhui province of China. The resultant data provided the further evidences to distinguish Juhua' cultivars and scientific basis for quality control of Juhua.
authors.affiliation: Institute of Chinese Medicinal Materials, Nanjing Agricultural University, Nanjing 210095, China.
authors.forename: Ya-Jun
authors.initials: YJ
authors.lastname: Wang
authors.forename: Qiao-Sheng
authors.initials: QS
authors.lastname: Guo
authors.forename: Xiu-Wei
authors.initials: XW
authors.lastname: Yang
authors.forename: Wen-Bin
authors.initials: WB
authors.lastname: Xu
authors.forename: Hai-Yan
authors.initials: HY
authors.lastname: Tao
mesh_terms: D000081008:Bicyclic Monoterpenes; D001880:Boranes / Q000737:chemistry; D001892:Camphanes / Q000737:chemistry; D002164:Camphor / Q000737:chemistry; D002681:China; D031202:Chrysanthemum / Q000737:chemistry*; D003511:Cyclohexanols / Q000737:chemistry; D000077591:Eucalyptol; D008401:Gas Chromatography-Mass Spectrometry; D039821:Monoterpenes / Q000737:chemistry; D009822:Oils, Volatile / Q000737:chemistry*; D000081223:Polycyclic Sesquiterpenes; D012717:Sesquiterpenes / Q000737:chemistry; D045787:Sesquiterpenes, Eudesmane; D013729:Terpenes / Q000737:chemistry; D013764:Tetrahydronaphthalenes / Q000737:chemistry
chemical_list: D000081008:Bicyclic Monoterpenes; D001880:Boranes; D001892:Camphanes; D003511:Cyclohexanols; D039821:Monoterpenes; D009822:Oils, Volatile; D000081223:Polycyclic Sesquiterpenes; D012717:Sesquiterpenes; D045787:Sesquiterpenes, Eudesmane; D013729:Terpenes; D013764:Tetrahydronaphthalenes; C087920:beta-selinene; C071528:bornyl acetate; D002164:Camphor; C441667:chrysanthenone; C019286:camphene; C022871:isoborneol; D000077591:Eucalyptol; C515179:caryophyllene oxide