[Study on optimizing extraction methods of Lamiophlomis rotata].
OBJECTIVE
To optimize different extraction methods of Lamiophlomis rotata Kudo.


METHODS
With the content of total flavonoids as assay index, the effect of three extraction methods was compared and the optimal excracting technology was selected by orthogoral test.


RESULTS
The contents of flavonoids and solids by ethanol extraction were more than that by the boiling water extraction and ultrasonic extraction.


CONCLUSIONS
The ethanol extraction is the optimal extracting technology, which is to put 10g powder of Lamiophlomis into 200ml 60% alcohol, and then reflux extract for 25 min.
Tang
Kun
K
The Institute of Medicinal Plant, Chongqing University of Posts and Telecommunications, Chongqing 400065, China. tktangkun@yahoo.com.cn
Cai
Ying-Fan
YF
Li
Biao
B
Zhang
Xiao-Qiang
XQ
D004365:Drugs, Chinese Herbal / Q000737:chemistry / Q000302:isolation & purification*; D000431:Ethanol; D005419:Flavonoids / Q000032:analysis* / Q000302:isolation & purification; D019686:Lamiaceae / Q000737:chemistry*; D010946:Plants, Medicinal / Q000737:chemistry*; D011208:Powders; D013678:Technology, Pharmaceutical / Q000379:methods*; D013696:Temperature; D013997:Time Factors; D014465:Ultrasonics
D004365:Drugs, Chinese Herbal; D005419:Flavonoids; D011208:Powders; D000431:Ethanol