title: Evaluation of the antimicrobial activity of the acetone extract of the lichen Ramalina farinacea and its (+)-usnic acid, norstictic acid, and protocetraric acid constituents.
abstract: The acetone extract of the lichen Ramalina farinacea and its (+)-usnic acid constituent showed antimicrobial activity against Bacillus subtilis, Listeria monocytogenes, Proteus vulgaris, Staphylococcus aureus, Streptococcus faecalis, Yersinia enterocolitica, Candida albicans, and Candida glabrata. Norstictic acid was active against Aeromonas hydrophila as well as the above microorganisms except Yersinia enterocolitica. Protocetraric acid showed activity only against the tested yeasts Candida albicans and Candida glabrata. The MIC values of the extract as well as of the three substances were determined. No antifungal activity of the acetone extract has been observed against ten filamentous fungi.
authors.affiliation: Anadolu University, Department of Chemistry, Eskişehir, Turkey.
authors.forename: Turgay
authors.initials: T
authors.lastname: Tay
authors.forename: Ayşen Ozdemir
authors.initials: AO
authors.lastname: Türk
authors.forename: Meral
authors.initials: M
authors.lastname: Yilmaz
authors.forename: Hayrettin
authors.initials: H
authors.lastname: Türk
authors.forename: Merih
authors.initials: M
authors.lastname: Kivanç
mesh_terms: D000096:Acetone; D000900:Anti-Bacterial Agents / Q000302:isolation & purification / Q000494:pharmacology*; D001419:Bacteria / Q000187:drug effects*; D001572:Benzofurans / Q000737:chemistry / Q000302:isolation & purification / Q000494:pharmacology*; D002855:Chromatography, Thin Layer; D008011:Lichens / Q000737:chemistry*; D008826:Microbial Sensitivity Tests; D010936:Plant Extracts / Q000302:isolation & purification / Q000494:pharmacology*; D015003:Yeasts / Q000187:drug effects*
chemical_list: D000900:Anti-Bacterial Agents; D001572:Benzofurans; D010936:Plant Extracts; C073339:usnic acid; D000096:Acetone