Investigating the antimicrobial properties of the medicinal plants Psidium guajava, Nerium oleander, Sinapis alba, Satureja hortensis against Salmonella typhimurium.

Salmonellosis is one of the most important common diseases of humans and animals worldwide, which causes food poisoning, gastroenteritis, enteric fever and bacteremia in humans. The purpose of this study is to investigate the antimicrobial properties of the medicinal plants Psidium guajava, Nerium oleander, Sinapis alba, Satureja hortensis on Salmonella Typhimurium.

Salmonella typhimurium samples were isolated from poultry feces, extracts of Psidium guajava, Nerium oleander, Sinapis alba, Satureja hortensis plants were prepared using a rotary device, and the minimum inhibitory concentration and the minimum lethal concentration were determined by the microdilution method, and the diameter of the inhibition zone was determined by the well method.

The results of the investigation of the inhibition halo diameter of plant extracts showed that the maximum and minimum inhibition halo diameters of P.guajava plant extract were 8 and 1 mm, and the maximum and minimum inhibition halo diameters of N.oleander flower extract were 15 and 1 mm. The maximum and minimum diameters of the inhibition zone of S.alba extract on Salmonella typhimurium were 12 and 1 mm, and the minimum and maximum diameters of the inhibition zone of S.hortensis extract on Salmonella typhimurium were 1 and 4 mm, and the results showed that that the smallest diameter of the inhibition halo was related to the salty extract.

Discuss:

The results of this study showed that medicinal plants have shown good inhibitory effects on Salmonella Typhimurium.