[Studies on optimal extraction conditions of flavonoid from the flowers of Edgeworthia chrysantha].
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.
Mao
Yi
Y
College of Pharmaceutical Science, Zhejiang University of Technology, Hangzhou 310032, China. zyx@zjut.edu.cn
Chen
Gang
G
Tong
Sheng-qiang
SQ
Wang
Bing-lan
BL
Yan
Ji-zhong
JZ
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
D005419:Flavonoids; D012997:Solvents; D000431:Ethanol; D000432:Methanol