Abstract A preliminary antimicrobial activity screening of some medicinal plants collected from Idris Mountain in Ankara-Turkey, were evaluated. Methanol (80 %) extracts were prepared after exhausted with ethyl acetate from aerial parts of 15 plants used in Turkish folk medicine. In order to examine antimicrobial activity ofthe methanol extracts, the disc diffusion method was used against the tested microorganisms. The inhibition zone diameter was determined for each extract. All of the extracts were found to be active against yeast, and only Allium rotundum L. and Potentilla recta L. showed antibacterial activity. Özet Bu çalismada Ankara’nin kuzeydogusunda yer alan Idris Dagi’ndan toplanan bazi tibbi bitkilerin antimikrobiyal aktiviteleri degerlendirilmistir. Türkiye’de halk arasinda kullanimi olan 15 bitkinin toprak üstü kisimlari önce etil asetat ile tüketilmis, sonra (% 80) metanollü ekstreleri hazirlanmistir. Antimikrobiyal aktiviteyi degerlendirmek için disk difüzyon metodu kullanilmistir. Her bir ekstre için inhibisyon zonlari belirlenmistir. Tüm ekstreler mayalara karsi aktivite gösterirken, yalnizca Allium rotundum L. ve Potentilla recta L antibakteriyel aktivite göstermistir.
Keywords: Antimicrobial activity; Folk medicine; Disc diffusion method; Turkey