title: [Anthraquinone contents in five processed products from Rheum palamatum].
abstract: OBJECTIVE
  To compare the contents of five anthraquinone components in five different processed products from Rheum palamatum.
  
  
  METHODS
  The contents of aleo-emodin, rhein, emodin, chrysophanol and physcion were determined simultaneously by HPLC on plogilent TC-C18 (2) column at 35 degrees C with the methanol-0.1% phosphoric acid (85: 15). The detection wavelength was set at 254 nm and the flow rate was 1.0 mL x min(-1).
  
  
  RESULTS
  The obtained linearity of the five components was better over 0.999 9 and the average recoveries were 96.44%, 98.11%, 99.30%, 98.00% and 97.86%, respectively.
  
  
  CONCLUSIONS
  The results showed the remarkable variation regulations show in the five different processed products. Compared to the no-parched pieces, the contents of the five anthraquinone components have evidently increased in the braising with liquor and the charring products, and reduced in the vinegar and the liquor sauted pieces.
authors.affiliation: Institute of Chinese Materia Madica, China Academy of Chinese Medicial Sciences, Beijing 100700, China.
authors.forename: Cun
authors.initials: C
authors.lastname: Zhang
authors.forename: Li
authors.initials: L
authors.lastname: Li
authors.forename: Yongqing
authors.initials: Y
authors.lastname: Xiao
authors.forename: Na
authors.initials: N
authors.lastname: Lin
authors.forename: Chunfang
authors.initials: C
authors.lastname: Liu
authors.forename: Guiliu
authors.initials: G
authors.lastname: Li
authors.forename: Zhen
authors.initials: Z
authors.lastname: Pang
authors.forename: Dongdong
authors.initials: D
authors.lastname: Chen
authors.forename: Guofang
authors.initials: G
authors.lastname: Tian
mesh_terms: D000880:Anthraquinones / Q000032:analysis*; D004364:Pharmaceutical Preparations / Q000032:analysis*; D012250:Rheum / Q000737:chemistry*
chemical_list: D000880:Anthraquinones; D004364:Pharmaceutical Preparations