摘要:GC and GC/MS analyses of the essential oils obtained from the aerial parts of Acinos suaveoiens and Acinos majoranifolius were performed. Fifty- six constituents, accounting for 95.11% of Acinos suaveoiens essential oil, were identified. The main compound was pulegone (48.47%), while caryo- phyllene oxide (7.14%), isomenthone (4.37%) and spathulenol (4.12%) were detected in a considerably lower percentage. Thirty-five compounds comprising 99.80% of the Acinos majoranifoli-us essential oil were recognized. The essential oil was characterized by pulegone (82.07%) as the major constituent. Also, isomenthone (9.73%), isopulegone (1.12%) and -cariophyllene (1.03%) had a significant percentage. Other components are presented with less than 1%. A disk diffusion method was used for the assessment of the antimicrobial activities of the essential oils against microorganisms (bacteria: Bacillus subtilis, Sarcina l-u- tea, Staphylococcus aureus, Klebsiella pneumoniae, Pseudomonas aeruginosa, Salmonella enteritidis and Escherichia ;il/gcfungi: niger, Candida albicans and Saccharomyces cerevisiae). The preliminary bioassay results indicated that the essential oils of Acinos suaveolens and Acinos ma- joranifolius could be possible sources of compounds with valuable antimicrobial activity.