title: [Studies on optimal extraction conditions of flavonoid from the flowers of Edgeworthia chrysantha].
abstract: OBJECTIVE
  To study the optimum extraction process of the total flavonoids from the flowers of Edgeworthia chrysantha Lindl.
  
  
  METHODS
  The effect of the concentration of ethanol, extraction time and ratio of material to liquid on the total flavonoid contents were investigated by the orthonogal test with the content of tiliroside as the chemical reference.
  
  
  RESULTS
  The optimum extraction condition was established as follows: the concentration of ethanol 75%, extraction time 1. 5 hours and the ratio of material to liquid 1:9.
  
  
  CONCLUSIONS
  The method is simple and feasible, and is the optimum extraction process of the total flavonoids from flowers of Edgeworthia Chrysantha Lindl.
authors.affiliation: College of Pharmaceutical Science, Zhejiang University of Technology, Hangzhou 310032, China. zyx@zjut.edu.cn
authors.forename: Yi
authors.initials: Y
authors.lastname: Mao
authors.forename: Gang
authors.initials: G
authors.lastname: Chen
authors.forename: Sheng-qiang
authors.initials: SQ
authors.lastname: Tong
authors.forename: Bing-lan
authors.initials: BL
authors.lastname: Wang
authors.forename: Ji-zhong
authors.initials: JZ
authors.lastname: Yan
mesh_terms: D000431:Ethanol / Q000008:administration & dosage; D005419:Flavonoids / Q000032:analysis / Q000302:isolation & purification*; D035264:Flowers / Q000737:chemistry; D000432:Methanol / Q000008:administration & dosage; D010946:Plants, Medicinal / Q000737:chemistry*; D012997:Solvents; D013678:Technology, Pharmaceutical / Q000379:methods*; D029645:Thymelaeaceae / Q000737:chemistry*; D013997:Time Factors
chemical_list: D005419:Flavonoids; D012997:Solvents; D000431:Ethanol; D000432:Methanol