title: [GC-MS analysis of essential oil from Curcuma aromatica rhizome of different growth periods].
abstract: OBJECTIVE
  To analyze the essential oil from the rhizome of Curcuma aromatica of different growth periods, and to provide the scientific reference for reasonable cultivation and quality control of this plant.
  
  
  METHODS
  The essential oil was extracted by hydrodistillation and analyzed with GC-MS. The relative contents were determined with area normalization method.
  
  
  RESULTS
  The main volatile constituents in the rhizome of Curcuma aromatica were basically the same. Among these volatile constituents, curdione was the major. The relative content of curdione was 16.35% in the rhizome of wild plant in Hengxian county, and 15.81% in the rhizome of one-year-old plant in Mingyang farm, Nanning city. The relative content of eucalyptol in the 2-year-old cultivated rhizome in Hengxian county was 15.40%, and 14.59% in the rhizome of wild plant in Hengxian county. beta-Elemene, beta-caryophyllene,eugenol and germacrone were also the main constituents in the rhizome essential oil.
  
  
  CONCLUSIONS
  Volatile constituents in the rhizome of Curcuma aromatica are similar to each other,but the relative content of each component is different. This result can provide the scientific foundation for the cultivation of Curcuma aromatica.
authors.forename: Jie
authors.initials: J
authors.lastname: Feng
authors.forename: Ming-ming
authors.initials: MM
authors.lastname: Xu
authors.forename: Xiu-lan
authors.initials: XL
authors.lastname: Huang
authors.forename: Hua-gang
authors.initials: HG
authors.lastname: Liu
authors.forename: Mao-xiang
authors.initials: MX
authors.lastname: Lai
authors.forename: Meng-han
authors.initials: MH
authors.lastname: Wei
mesh_terms: D030024:Curcuma / Q000737:chemistry* / Q000254:growth & development; D003511:Cyclohexanols / Q000032:analysis; D000077591:Eucalyptol; D008401:Gas Chromatography-Mass Spectrometry; D039821:Monoterpenes / Q000032:analysis; D009822:Oils, Volatile / Q000032:analysis* / Q000737:chemistry / Q000302:isolation & purification; D010938:Plant Oils / Q000032:analysis* / Q000737:chemistry / Q000302:isolation & purification; D011786:Quality Control; D027343:Rhizome / Q000737:chemistry* / Q000254:growth & development; D012717:Sesquiterpenes / Q000032:analysis; D045788:Sesquiterpenes, Germacrane / Q000032:analysis*; D013997:Time Factors
chemical_list: D003511:Cyclohexanols; D039821:Monoterpenes; D009822:Oils, Volatile; D010938:Plant Oils; D012717:Sesquiterpenes; D045788:Sesquiterpenes, Germacrane; C445979:beta-elemene; C504126:curdione; D000077591:Eucalyptol