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Aims: Many infectious diseases had traditionally been cured with herbal medicines. Antimicrobial agents are often produced synthetically to increase the food durability and quality. The purpose of this study was to determine the antimicrobial properties of the aqueous and alcoholic extracts of Allium schoenoprasum.
Materials & Methods: In this experimental study, after preparation Allium schoenoprasum samples, aqueous and alcoholic extracts were prepared and their minimum inhibitory concentration (MIC) was determined against Staphylococcus aureus, Bacillus cereus, Escherichia coli and Vibrio cholerae by micro broth dilution method. Erythromycin was used as the control.
Findings: The MIC of alcoholic and aqueous extracts of A. schoenoprasum was 16-256 and 32->256µg/ml, respectively and MBC of them were 32-256 and 64->256ug/ml, respectively. The A. schoenoprasum exhibited higher activity against S. aureus and B. cereus strains.
Conclusion: The extracts of A. schoenoprasum have antimicrobial effect on S. aureus, B. cereus, E. coli and V. cholerae strains in micro broth dilution method.

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Nowadays, in order to preserve the quality of food against pathogenic factors, replacing chemical preservatives in meat and meat products with natural compounds such as herbal extracts is very considered. In this research, the effect of Allium schoenoprasum leaf extract at levels 0, 25, 50, 75 ppm on shelf life and qualitative properties of hamburgers during refrigerating period on days 1, 5 and 10 was studied. In this regard, different tests including chemical, microbial as well as minimum inhibitory concentration and minimum bactericidal concentration were performed on hamburger samples. The results showed that the function of Allium schoenoprasum leaf extract caused a decline in pH, the peroxide index, and microbial load of Staphylococcus aureus and Escherichia coli. Furthermore, it showed the effects of minimum inhibitory and minimum bactericidal. It is good to note that the sample including 75 ppm Allium schoenoprasum leaf extract had the best desirable features among the other treatments.