Abstract
İn this study, the antimicrobial activities of eight species plants, used for treatment of various diseases, were investigated. The extracts of Rhus coriaria L., Pistacia terebinthus L. subsp. palestina, Centaurea virgata Lav., Euphorbia macroclada Boiss., Ceterach officinarum DC., Echinophora tenuifolia L. subsp. sibthorpianal (Guss) Tutin, Equisetum romasissimum Desf., Umbilicus erectus DC. have been prepared with methanol and the antimicrobial activities of these extracts have been examined on test microorganisms as follows: Staphylococcus aureus COWAN 1, Bacillus megaterium DSM 32, Klebsiella pneumoniae FMC 5, Escherichia coli ATCC 25922, Candida albicans FMC 17, Candida glabrata ATCC 66032, C. tropicalis ATCC 13803, Trichophyton sp. and Epidermophyton sp. by disc diffusion methods. The MIC values of plant extracts were determined acording to the microdilutions assays. Results from obtained experimental studies showed that the extracts of R. coriaria, P. terebinthus sub. sp. palestina, U. erectus and C. virgata have been inhibited the growth of all over the microorganisms used in the test at different ratio. But the extracts of E. macroclada, C. officinarum, E. tenuifolia, L. sibthorpianal, E. romasissimum had no effect against some bacteria, yeasts and dermatophyta used in study. Also, The MIC values of real extracts have been determined as 20 - 0.3125 mg/ml.
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