摘要：Hexane,chloroform,ethyl acetate and ethanolic extracts of the aerial parts of Centaurea austro-anatolica Hub.-Mor.(Asteraceae) were evaluated against microorganisms,including multiresistant bacteria,using a paper disc diffusion method.The chloroform extract exhibited significant antibacterial activity toward all bacteria tested.The chemical composition of the chloroform extract was determined by gas chromatography (GC) and gas chromatography-mass spectrometry (GC-MS).The major compounds of the extract were caryophyllene oxide (21.32 %),spathulenol (10.86 %),n-tricosanol (9.58 %) and geranyl isovalerate (8.71 %).
