Abstract:In this research, the antibacterial activity of crude extracts obtained from leaves of pennyroyal (Mentha pulegium L.) plant against Escherichia coli ATCC 25922, Enterococcus faecalis ATCC 29212, Staphylococcus aureus ATCC 29213 and Staphylococcus epidermidis ATCC 12228 was investigated. Acetone and methanol were used as chemical solvents to prepare the extracts of Mentha pulegium L. The determination of antibacterial activity was performed by using disc diffusion method. For each extract, its own solvent was utilized as negative control. Standard antibiotic discs (Clindamycin, Tetracycline and Amoxicillin-Clavulanic acid) were also used as positive control. The results of present study showed that the crude extracts of Mentha pulegium L. prepared in acetone and methanol had antibacterial activity against test microorganisms and the most antibacterial effect was observed against Staphylococcus epidermidis. It was determined that the extract of Mentha pulegium L. (6400 µg/disc) has more antibacterial activity against E. faecalis and S. epidermidis than Tetracycline (10 µg/disc) and has more antibacterial activity against E. coli than Clindamycin (10 µg/disc). However it was found that antibacterial activity of Mentha pulegium L. extract (6400 µg/disc) was close to Tetracycline (10 µg/disc) for E. coli and S. aureus and was close to Clindamycin (10 µg/disc) for E. faecalis.

No abstract

No abstract