title: [Preliminary study on variation pattern of Cistanche deserticola].
abstract: OBJECTIVE
  Through analyze of shape, structure and content of effective components of Cistanche deserticola, the variation of "you cong rong" is discussed.
  
  
  METHODS
  The color surface, texture, the size of pith and the arrange of vascular bundle was observed with freshed, dried drugs and the transverse section, the effective component of echinacoside and acteoside was analyzed with hplc and the amylose was analyzed with ultraviolet spectrophotometry.
  
  
  RESULTS
  The variation of "you cong rong" is obvious different with the common drug in shape and structure, the content of echinacoside is 2.5 times, acteoside is 3.8 times, amylose yield is 1.6 times and the content is 2 times of the common drugs.
  
  
  CONCLUSIONS
  "you cong rong" is an independent variation pattern of C. deserticola, it has no relationship with the ecological and geographical conditions.
authors.affiliation: Institute of Chinese Materia Medica, China Academy of Chinese Medicinal Sciences, Beijing 100700, China.
authors.forename: Min
authors.initials: M
authors.lastname: Chen
authors.forename: Guang-Hong
authors.initials: GH
authors.lastname: Cui
authors.forename: Su-Ping
authors.initials: SP
authors.lastname: Xiao
authors.forename: Shu-Fang
authors.initials: SF
authors.lastname: Lin
authors.forename: Zhi-Gang
authors.initials: ZG
authors.lastname: Wu
authors.forename: Lu-Qi
authors.initials: LQ
authors.lastname: Huang
mesh_terms: D000688:Amylose / Q000737:chemistry; D002851:Chromatography, High Pressure Liquid; D031671:Cistanche / Q000033:anatomy & histology* / Q000737:chemistry*; D004365:Drugs, Chinese Herbal / Q000737:chemistry; D005960:Glucosides / Q000737:chemistry; D006027:Glycosides / Q000737:chemistry; D010636:Phenols / Q000737:chemistry; D059808:Polyphenols
chemical_list: D000688:Amylose; D004365:Drugs, Chinese Herbal; D005960:Glucosides; D006027:Glycosides; D010636:Phenols; C058956:acteoside; D059808:Polyphenols; C060297:echinacoside