بررسي اثر اسانس شش گياه دارويي در كنترل باكتري سالمونلا در مقايسه با آنتي بيوتيك استرپتومايسين

Evaluation of essential oil of six medicinal plant on controlling of salmonella bacteria in comparison with streptomycin

Study of the antibacterial effect of medical plants can be a useful method for a sustainable control of bacteria. Salmonella spp. is the most important pathogenic agent in human and animal. This experiment was conducted in the basics of Randomized Complete Design on Kirby-bauer standard method with seven treatments and three replications to investigate the impacts of six essential oils derived from six medicinal plants on five species of the aforementioned bacteria. The plants included: Peppermint (Mentha piperita), Thyme (Thymus vulgaris), Rosemary (Rosmarinus officinalis), Black caraway (Bunium persicum), Eucalyptus (Eucalyptus globulus) and Yarrow (Achillea millefolium). The bacteria species were taken from egg crust. Two standard species of Salmonella spp. (typhimurium and enteritidis) were prepared from Razi institute, Tehran-Iran. Result indicated that the effects of the essential oils on controlling salmonella were significant. The highest and the lowest impacts belonged to Thyme (halo average diameter = 25.6 mm) and Eucalyptus (halo average diameter = 3.4mm), respectively. It is concluded that Thyme essential oil was useful for controlling Salmonella compared with other essential oils.