Study of the Antimicrobial Effects of Aqueous Extract of Olea europaea, Solanum nigrum, Artemisia sieberi, Teucrium polium, Glycyrrhiza glabra on some Food-borne Pathogenic Bacteria

Abstract

Background: The aqueous extract of some plants has an antibacterial effect on pathogenic bacteria for humans. Objective: This study designed to investigate the antimicrobial activity of aqueous extract of some plants on some food-borne pathogenic bacteria in a laboratory setting has done. Method: In an experimental study, plants collected from of Tehran city and aqueous extract of them, extracted. To determine the minimum inhibitory concentration (MIC) and minimum bactericidal concentration (MBC) with two ways of visual and turbidity (OD), serially different concentrations (1.25-80 mg/ml) on different cultures was prepared. Disc diffusion (DD) test in concentrations of 10, 20 and 40 mg/ml to determine the average diameter of inhibition for some bactria, done. Results: The results showed that the inhibitory and fungicidal aqueous extract of Solanum americanum on various bacteria was more than any other aqueous extracts (Staphylococcus aureus MIC = 10 mg/ml) and also Staphylococcus aureus and Salmonella typhimurium were the most sensitive and most resistant bacteria to aqueous extract, respectively. Conclusion: According to the results, we can be hopeful the extract of Solanum americanum in the treatment of pathogenic bacteria such as S. aureus, can be help and it can used in the food industry as a food protection. Recommended by extracting the active ingredients of the extract of this plant and other plants, more research done on the composition of extract.

Keywords

• antimicrobial effects
• aqueous extraction
• food-borne diseases
• minimum bactericidal concentration (mbc)
• minimum inhibitory concentration (mic)