The antimicrobial effects of Mentha longifolia L. essential oil on Salmonella enteritidis in mayonnaise sauce

Now adays, there is a considerable tendency to use herbal essential oil as natural preservatives in foods and nutrition. Studies of their antimicrobial impact in the food models to achieve a safe and healthy food is growing. Mentha longifolia plant of the Laminacea family has antimicrobial compounds, Carvacrol and Thymol which are found in the essential oil of this plant. The aim of this study is to survey and evaluate the antimicrobial activity of essential oils of Mentha longifolia and the possibility of its application as a natural preservative and flavor in mayonnaise. In this study, the antimicrobial effect of different concentrations (1250, 2500, 5000 and 10000 ppm) Mentha longifolia essential oil on Salmonella enteritidis in mayonnaise at 4 and 25 °C were evaluated in 30 days. Factorial experiments in a completely randomized design, with three repetitions were analyzed by SPSS software. The results showed that the antimicrobial effect of “essential oil of oregano” at 25 °C is higher than 4 °C (p