title: [Analysis of Volatile Oils from Different Processed Products of Zingiber officinale Rhizome by GC-MS].
abstract: OBJECTIVE
  To analyze the volatile components in different processed products of Zingiber officinale rhizome, and to make clear the effect of different heating degree on them.
  
  
  METHODS
  The volatile components were extracted from four kinds of processed products by applying steam distillation, and then were analyzed by GC-MS.
  
  
  RESULTS
  There were totally 43 components of volatile oil identified from four kinds of processed products of Zingiber officinale rhizome. Fresh product, dried product, and charcoal product of Zingiber officinale rhizome each had 27 components of volatile oil, while sand fried product contained 24 components. Fresh Zingiber officinale rhizome contained 22. 59% of zingiberene, 20. 87% of a-citral and 11. 01% of β-phellandrene, respectively. After processing in different heating degree, the volatile components changed greatly in both of their quantity and quality, For instance, dried Zingiber officinale rhizome contained 40. 48% of α-citral and 8-phellandrene content was slightly lower at 10. 38%. 32.73% of 3,7,11-trimethyl-l, 6, 10-dodecatriene,16. 38% of murolan-3, 9 (11)-diene-10-peroxy and 3. 36% of cubebene newly emerged in the sand fried Zingiber officinale rhizome, and eudesm-4 (14) and β-bisabolol, etc. However, β-phellandrene content was only 1. 95%. The zingiberene and β-sesquiphellandrene were the highest in charcoal product, besides, new components such as α-cedrene, decanal and γ-elemene appeared.
  
  
  CONCLUSIONS
  Volatile components in different processed products of Zingiber officinale rhizome were different in both of their kinds and contents. This method is suitable for the analysis of volatile components in Zingiber officinale rhizome, and this study can provide the experimental evidence for quality evaluation and clinical application for ginger processed products.
authors.forename: Hong-bing
authors.initials: HB
authors.lastname: Zhao
authors.forename: Zhi-hui
authors.initials: ZH
authors.lastname: Wang
authors.forename: Fang
authors.initials: F
authors.lastname: He
authors.forename: Han
authors.initials: H
authors.lastname: Meng
authors.forename: Jian-hua
authors.initials: JH
authors.lastname: Peng
authors.forename: Ji-lian
authors.initials: JL
authors.lastname: Shi
mesh_terms: D000080462:Acyclic Monoterpenes; D000081005:Cyclohexane Monoterpenes; D053138:Cyclohexenes; D057168:Distillation; D008401:Gas Chromatography-Mass Spectrometry; D020939:Zingiber officinale / Q000737:chemistry*; D000081222:Monocyclic Sesquiterpenes; D039821:Monoterpenes; D009822:Oils, Volatile / Q000737:chemistry*; D010938:Plant Oils / Q000737:chemistry*; D000081223:Polycyclic Sesquiterpenes; D027343:Rhizome / Q000737:chemistry; D012717:Sesquiterpenes
chemical_list: D000080462:Acyclic Monoterpenes; D000081005:Cyclohexane Monoterpenes; D053138:Cyclohexenes; D000081222:Monocyclic Sesquiterpenes; D039821:Monoterpenes; D009822:Oils, Volatile; D010938:Plant Oils; D000081223:Polycyclic Sesquiterpenes; D012717:Sesquiterpenes; C000393:cedrene; C038905:elemene; C058582:beta-phellandrene; C477983:zingiberene; C007076:citral