title: [Study on the stability of resveratrol in rhizoma polygoni cuspidati].
abstract: OBJECTIVE
  The stability of resveratrol in Rhizoma Polygoni Cuspidati is evaluated all-roundly.
  
  
  METHODS
  We not only increase influence intensity by physical, chemical and biological methods but also parallel analyzing the influence results to elicit the opinions.
  
  
  RESULTS
  The content of resveratrol is declied greatly by lighting, heating, wet-heating or oxidizing. The content is increased in Rhizoma Polygoni Cuspidati treated with acid or alkali only using sodium hydroxide until pH=11. The content is not increased when its own activated microbe is destroyed.
  
  
  CONCLUSIONS
  Resveratrol is unstable against light, heat, wet-heating and oxidizer. Its own activated microbe has not influenced to it. It has not benefit with acidification. Its solubility and stability increase formed sodium salt with basification.
authors.affiliation: College of Life Sciences and Engineering, Shaanxi University of Science & Technology, Xianyang 712081, China. chenyibin@sust.edu.cn
authors.forename: Yi-bin
authors.initials: YB
authors.lastname: Chen
authors.forename: Bao-xiang
authors.initials: BX
authors.lastname: Sun
authors.forename: Jia-xi
authors.initials: JX
authors.lastname: Chen
mesh_terms: D000972:Antineoplastic Agents, Phytogenic / Q000032:analysis / Q000737:chemistry / Q000302:isolation & purification; D004355:Drug Stability; D004365:Drugs, Chinese Herbal / Q000737:chemistry / Q000302:isolation & purification*; D045468:Fallopia japonica / Q000737:chemistry*; D006358:Hot Temperature; D006863:Hydrogen-Ion Concentration; D010946:Plants, Medicinal / Q000737:chemistry*; D000077185:Resveratrol; D012997:Solvents; D013056:Spectrophotometry, Ultraviolet; D013267:Stilbenes / Q000032:analysis* / Q000737:chemistry / Q000302:isolation & purification
chemical_list: D000972:Antineoplastic Agents, Phytogenic; D004365:Drugs, Chinese Herbal; D012997:Solvents; D013267:Stilbenes; D000077185:Resveratrol