evaluation of zenian and avishan-e shirazi antibacterial activity against vibrio cholerae strains

background : the aim of this study was to determine the antibacterial activity of zataria multiflora boiss (avishan-e shirazi) and carum copticum (zenian) extracts on vibrio cholerae american type culture collection (atcc14035)and v. cholerae persian type culture collection (ptcc1611) strains. methods : antimicrobial effects of the extracts were assayed by disc diffusion and broth microdilution methods. results : using susceptibility tests, it was shown that carum copticum methanolic extract had the highest antibacterial effect on v. cholerae standard strains at 6.25 mg/ml concentration. conclusions : other evaluations considering herbal extracts as an antibacterial agent as well as in vivo examination of these extracts is needed to provide a natural, cost effective and strong alternative for traditionally less effective antibiotics normally used.