title: [Study on optimizing extraction methods of Lamiophlomis rotata].
abstract: 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.
authors.affiliation: The Institute of Medicinal Plant, Chongqing University of Posts and Telecommunications, Chongqing 400065, China. tktangkun@yahoo.com.cn
authors.forename: Kun
authors.initials: K
authors.lastname: Tang
authors.forename: Ying-Fan
authors.initials: YF
authors.lastname: Cai
authors.forename: Biao
authors.initials: B
authors.lastname: Li
authors.forename: Xiao-Qiang
authors.initials: XQ
authors.lastname: Zhang
mesh_terms: 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
chemical_list: D004365:Drugs, Chinese Herbal; D005419:Flavonoids; D011208:Powders; D000431:Ethanol