[Optimization of extraction process of Dandelions (Taraxacum Weber)].
OBJECTIVE
To optimize the extraction conditions of Dandelions (Taraxacum Weber).


METHODS
Using the uniform design, the content of total flavonoids and quercetin were detected to investigate the extraction process of Dandelions.


RESULTS
The ethanol concentration and the ethanol volume in the uniform test impacted the test mostly. The best extraction process of Dandelions was obtained as following: 13 times of 85% ethanol as the solvent, extraction for 2 times and 1 h for each time.


CONCLUSIONS
The extraction ratio of total flavonoids and quercetin are higher according to the above extraction process.
Ma
Li-chun
LC
Department of Pharmacy, China-Japan Friendship Hospital, Beijing 100029, China. malichun70@hotmail.com
Wei
Feng-ling
FL
D004365:Drugs, Chinese Herbal / Q000737:chemistry / Q000302:isolation & purification*; D000431:Ethanol; D005419:Flavonoids / Q000032:analysis*; D010946:Plants, Medicinal / Q000737:chemistry*; D011794:Quercetin / Q000032:analysis*; D031205:Taraxacum / Q000737:chemistry*; D013678:Technology, Pharmaceutical / Q000379:methods
D004365:Drugs, Chinese Herbal; D005419:Flavonoids; D000431:Ethanol; D011794:Quercetin