title: [Effect of original processing method on sterol compounds of rhizoma pinelliae].
abstract: OBJECTIVE
  Investigate the effect of different processing methods on the quality of Rhizoma Pinelliae.
  
  
  METHODS
  The sterol compounds from different Rhizoma Pinelliae samples processed with different drying methods were analysed by GC.
  
  
  RESULTS
  The fingerprints of five specific steroid components are very stable in those samples of Rhizoma Pinelliae which were first dried 2 h at 70 degrees C then baked at low temperature or by repeated drying at low-temperature, and the the five peaks from each sample have high similarity. But the samples dried without a proper treatment on higher temperature or with a halfway dryness at low-temperature showed a reduced peak height of steroid to varying degrees and some peaks were hardly detected.
  
  
  CONCLUSIONS
  It is conducive to the preservation and stability of stroids of Pinellia ternata that to being Dried at proper high temperature such as at 70 degrees C for 2 h first then fully dried at low temperature.
authors: Key laboratory of Traditional Chinese Medicine Resource and Compound Prescription, Hubei University of Traditional Chinese Medicine, Wuhan 430065, China. qqian87@126.com
authors: Qian
authors: Q
authors: Chen
authors: Ke-Li
authors: KL
authors: Chen
authors: Min
authors: M
authors: Yang
authors: Cheng-Xiong
authors: CX
authors: Yang
mesh_terms: D002849:Chromatography, Gas / Q000379:methods; D003080:Cold Temperature; D003890:Desiccation / Q000379:methods*; D004365:Drugs, Chinese Herbal / Q000737:chemistry*; D006358:Hot Temperature; D030021:Pinellia / Q000737:chemistry* / Q000254:growth & development; D035281:Plant Tubers / Q000737:chemistry / Q000254:growth & development; D010946:Plants, Medicinal / Q000737:chemistry* / Q000254:growth & development; D011786:Quality Control; D013261:Sterols / Q000032:analysis*; D013678:Technology, Pharmaceutical / Q000379:methods
chemical_list: D004365:Drugs, Chinese Herbal; D013261:Sterols