[Extraction of ecdysterone from Stemmacantha uniflora].
OBJECTIVE
To optimize the conditions for the extraction of ecdysterone from Stemmacantha uniflora.


METHODS
Conditions for the extraction were studied by three different methods as guided by the content of ecdysterone and solid material that present in the extract.


RESULTS
Methanol was the best solvent, water the second, ethanol was greatly effected by concentration. Ultrasonic extraction had a good efficiency with short time. The time of cool extraction was too long, its efficiency was inferior to the other methods.


CONCLUSIONS
The best methods for the extraction of ecdysterone from Stemmacantha uniflora was methanol reflux extraction.
Chen
Lili
L
Faculty of Material Science and Chemical Engineering, China University of Geosciences, Wuhan 430074.
Wu
Hongquan
H
Li
Yi
Y
Shuai
Qin
Q
D019659:Asteraceae / Q000737:chemistry*; D002623:Chemistry Techniques, Analytical / Q000379:methods; D004365:Drugs, Chinese Herbal / Q000737:chemistry / Q000302:isolation & purification*; D004441:Ecdysterone / Q000032:analysis / Q000302:isolation & purification*; D000432:Methanol; D018517:Plant Roots / Q000737:chemistry; D010946:Plants, Medicinal / Q000737:chemistry*; D012997:Solvents; D013678:Technology, Pharmaceutical / Q000379:methods; D014867:Water
D004365:Drugs, Chinese Herbal; D012997:Solvents; D014867:Water; D004441:Ecdysterone; D000432:Methanol