Leila Malekpourzadeh - Department of Plant Sciences, Faculty of Biological Sciences, Kharazmi University, Tehran, Iran
Farrokh Ghahremaninejad - Department of Plant Sciences, Faculty of Biological Sciences, Kharazmi University, Tehran, Iran
Seyed Mansour Mirtajadini - Department of Biology, Faculty of Sciences, Shahid Bahonar University, Kerman, Iran

Methanolic extracts of twenty selected medicinal plant species collected from the Takhte-e-Sartashtak region, that utilize to prevent and cure different kinds of diseases in traditional medicine, have been examined for antimicrobial activity against some pathogenic microorganisms. These twenty plant species belong to eleven families including, Apiaceae, Asteraceae, Berberidaceae, Cupressaceae, Datiscaceae, Euphorbiaceae, Lamiaceae, Papaveraceae, Rhamnaceae, Rosaceae, and Thymelaceae. They were tested against five microorganisms including two gram-positive bacteria, Bacillus cereus and Staphylococcus aureus two gram-negative bacteria, Escherichia coli, and Pseudomonas aeruginosa and one fungus, Candida albicans with the method of disk diffusion and determination of growth inhibition zone were tested. Most of the plants showed antimicrobial activity. Results observed methanolic extracts of all of these plant species (except one) were active against at least one or more microorganisms. Only one plant species (Physospermum cornubiense (L.) DC., (Apiaceae)) was not active against none of the microorganisms. Sanguisorba minor Scop. (Rosaceae) was active against all five microorganisms. Most antimicrobial activities belong to Ferulago angulata (Schltdi.) Boiss. (Apiaceae) against Candida albicans, also Glaucium grandiflorum Boiss. & Huet (Papaveraceae) and Datisca cannabina L. (Datiscaceae) against S. aureus. Only one taxon, Sanguisorba minor Scop. (Rosaceae), was the only active species against Escherchia coli. The MIC, MBC, and MFC of plant extracts were approximately different.

Antimicrobial activity, Medicinal plants, traditional medicine