Volume 4, Issue 2, 2022, Pages 19 - 27

Author(s) : Maryam Fijivar ¹ , Hamdollah Moshtaghi ² , Mojtaba Bonyadian ³ , Nadia Fijivari * ⁴

Abstract :
The effect of rosemary essential oil on Listeria monocytogenes bacteria in turkey meat extract Maryam Fijivari 1, Hamdollah Moshtaghi 2, Mojtaba Bonyadian 3, Nadia Fijivari 4* 1Master’s degree in food hygiene and quality control, Faculty of Veterinary Medicine, Shahrekord University 2Full Professor, Department of Health and Food Quality Control, Faculty of Veterinary Medicine, Shahrekord University 3Full Professor, Department of Health and Food Quality Control, Faculty of Veterinary Medicine, Shahrekord University 4Ph.D. student in food hygiene, Faculty of Veterinary Medicine, University of Mashhad Abstract Meat is an important source of nutrition for humans, which plays an essential role in human daily nutrition due to the existence of rich sources of protein. Poultry meat is one of the most favorable foods for the growth of pathogenic bacteria such as Salmonella, Clostridium, Campylobacter, Escherichia coli and Listeria. Today, the use of antibiotics has decreased due to their side effects and increased resistance of microorganisms to them, and medicinal plants are very popular in curing bacterial infections. In this study, the antibacterial effects of rosemary essential oil (Rosmarinus officinalis) on Listeria monocytogenes bacteria were investigated at 4 and 15 degrees Celsius in turkey meat extract. The minimum inhibitory concentration (MIC) of rosemary essential oil was 0.5% by microdilution broth method and the minimum bactericidal concentration (MBC) of rosemary essential oil was 0.5% by plating method. The results obtained from the inoculation of bacteria in the turkey meat extract at 4 and 15°C after ten days showed that at 4°C the number of bacteria in the experimental groups decreased by 2 logarithms on the first day. And after that, it decreased by another 1 logarithm until the seventh day, and finally, on the tenth day, bacteria decreased by another 1 logarithm. Also, at a temperature of 15 degrees Celsius, the number of bacteria decreased by 1 logarithm on the first day, and another 1 logarithm decrease was observed on the second and third day. Then, on the fifth and seventh days, we saw an increase in bacteria by 1 logarithm, and finally, on the tenth day, the number of bacteria increased by another 1 logarithm (P ≤ 0.05). The results showed that rosemary essential oil has antibacterial properties against Listeria monocytogenes bacteria.

Keywords :
Listeria monocytogenes, rosemary essential oil, turkey meat extract