title: [Comparative Study on Quality of Volatile Oil of Acori Tatarinowii Rhizoma from Two Habitats].
abstract: OBJECTIVE
  To compare the quality of volatile oil of Acori Tatarinowii Rhizoma from Guangxi and Sichuan.
  
  
  METHODS
  The volatile oil was extracted from Acori Tatarinowii Rhizoma by using steam distillation method, and analyzed by GC-MS. Peak area normalization method was used for calculating the relative percentage contents of chemical constituents, and hierarchical cluster analysis was used for classifying the 20 batches of samples by their relative contents of the main components that were methyleugenol, cis-methylisoeugenol, γ-asarone, β-asarone and α-asarone.
  
  
  RESULTS
  The average extraction rate of 10 batches of volatile oil in Acori Tatarinowii Rhizoma from Guangxi was 1. 61%, and 10 batches of samples from Sichuan was 1. 72%. The relative percentage contents of five main components totaled 78. 19% and 88. 84%, respectively. By t-test, there was no statistical difference between samples from Guangxi and Sichuan. In the hierarchical cluster analysis,10 batches of samples from Guangxi and 10 batches of samples from Sichuan could respectively be classified into four clusters subcategories and five clusters subcategories, while the mean of samples of Guangxi and the mean of samples of Sichuan respectively analyzed with 20 batches of the two habitats that all were classified in the same clusters subcategories. The results of similarity showed that the correlation coefficients of 8 batches in 10 batches of samples from Guangxi were over 0. 9, while 1 batch was only 0. 466. The correlation coefficients of 7 batches in 10 batches of samples from Sichuan had were over 0. 9, while 1 batch was only 0. 069. The correlation coefficients between the mean of samples of Guangxi and the mean of samples of Sichuan was 0. 996.
  
  
  CONCLUSIONS
  Quality of the different batches of volatile oil from Acori Tatarinowii Rhizoma have significant differences, but it has no obvious correlation with the habitats.
authors.forename: Xiao-lu
authors.initials: XL
authors.lastname: Chen
authors.forename: De-jun
authors.initials: DJ
authors.lastname: Yuan
authors.forename: Xue-ru
authors.initials: XR
authors.lastname: Wu
authors.forename: Qi-duan
authors.initials: QD
authors.lastname: Wu
mesh_terms: D029023:Acorus / Q000737:chemistry*; D000081248:Allylbenzene Derivatives; D000840:Anisoles; D002681:China; D057168:Distillation; D004365:Drugs, Chinese Herbal / Q000737:chemistry; D017753:Ecosystem; D005054:Eugenol / Q000031:analogs & derivatives; D008401:Gas Chromatography-Mass Spectrometry; D009822:Oils, Volatile / Q000737:chemistry*; D010938:Plant Oils / Q000737:chemistry*; D027343:Rhizome / Q000737:chemistry*
chemical_list: D000081248:Allylbenzene Derivatives; D000840:Anisoles; D004365:Drugs, Chinese Herbal; D009822:Oils, Volatile; D010938:Plant Oils; C012195:asarone; C005223:methyleugenol; D005054:Eugenol; C031050:isomethyleugenol