title: Composition and antimicrobial activity of essential oils from Centaurea sessilis and Centaurea armena.
abstract: The essential oils of air-dried Centaurea sessilis and Centaurea armena obtained by hydrodistillation were analyzed by gas chromatography-mass spectrometry (GC-MS). Forty and twenty components were identified in the essential oils and the main component of these taxons was beta-eudesmol in the ratios of 12.4% and 19.3% from C. sessilis and C. armena, respectively. The antimicrobial activity of the isolated essential oil of the plants was also investigated. They showed moderate antibacterial activity against Gram-positive and Gram-negative bacteria, but no antifungal activity was observed against two yeastlike fungi.
authors.affiliation: Department of Chemistry, Faculty of Arts and Sciences, Karadeniz Technical University, 61080 Trabzon, Turkey. yayli@ktu.edu.tr
authors.forename: Nurettin
authors.initials: N
authors.lastname: Yayli
authors.forename: Ahmet
authors.initials: A
authors.lastname: Yaşar
authors.forename: Canan
authors.initials: C
authors.lastname: Güleç
authors.forename: Asu
authors.initials: A
authors.lastname: Usta
authors.forename: Sevgi
authors.initials: S
authors.lastname: Kolayli
authors.forename: Kamil
authors.initials: K
authors.lastname: Coşkunçelebi
authors.forename: Sengül
authors.initials: S
authors.lastname: Karaoğlu
mesh_terms: D000900:Anti-Bacterial Agents / Q000737:chemistry / Q000494:pharmacology*; D031179:Centaurea / Q000737:chemistry*; D009822:Oils, Volatile / Q000737:chemistry* / Q000494:pharmacology; D010938:Plant Oils / Q000737:chemistry* / Q000494:pharmacology
chemical_list: D000900:Anti-Bacterial Agents; D009822:Oils, Volatile; D010938:Plant Oils