title: [Screening of anti-bacteria activity of extracts of Gaultheria leucocarpa var. yunnanensis].
abstract: OBJECTIVE
  To further develop Gaultheria leucocarpa var. yunnanensis, anti-bacteria constituents in it were screened.
  
  
  METHODS
  The constituents were extracted by chromatographic process. The anti-bacteria test was made with regulatory method of analysis.
  
  
  CONCLUSIONS
  Anti-bacteria test with extracts of water, acetic ester and n-butanol showed that 3 extracts from 22 samples had anti-Staphylococcus aureus action, and the extracts from root and stem showed the same result. 2 extracts could kill Escherichia coli and Pseudomonas aeruginosa. The lower the concentrate, the less the anti-bacteria action was. These results suggested that not only essential oil but other ingredients from G. leucocarpa var.yunnanensis have anti-bacteria activity. Anti-fungi test of the same extracts didn't indicate remarkable action.
authors.affiliation: Department of Natural Medicines, School of Pharmaceutical Science, Beijing University, Beijing 100083, China.
authors.forename: X J
authors.initials: XJ
authors.lastname: Ma
authors.forename: L
authors.initials: L
authors.lastname: Zhao
authors.forename: C F
authors.initials: CF
authors.lastname: Du
authors.forename: Y J
authors.initials: YJ
authors.lastname: Gong
authors.forename: J H
authors.initials: JH
authors.lastname: Zheng
authors.forename: X Z
authors.initials: XZ
authors.lastname: Chen
mesh_terms: D000900:Anti-Bacterial Agents / Q000302:isolation & purification / Q000494:pharmacology*; D004365:Drugs, Chinese Herbal / Q000302:isolation & purification / Q000494:pharmacology*; D004926:Escherichia coli / Q000187:drug effects; D031282:Gaultheria / Q000737:chemistry*; D018517:Plant Roots / Q000737:chemistry; D018547:Plant Stems / Q000737:chemistry; D010946:Plants, Medicinal / Q000737:chemistry; D011550:Pseudomonas aeruginosa / Q000187:drug effects*; D013211:Staphylococcus aureus / Q000187:drug effects*
chemical_list: D000900:Anti-Bacterial Agents; D004365:Drugs, Chinese Herbal