Efficacy of slightly acidic electrolysed water, chlorine dioxide, calcium oxide, and nisin against Salmonella Typhimurium and Listeria monocytogenes on chicken meats

Abstract

The aim of the present work was to investigate the antibacterial effects of four different decontaminants [slightly acidic electrolysed water (SAEW), chlorine dioxide, calcium oxide, and nisin (N)] and two different application methods (spraying, S; and immersion, I) on Salmonella Typhimurium and Listeria monocytogenes strains on chicken meats. The decontamination effect of each solution was applied by spraying and immersion on days 0 (2 h after application), 1, 3, and 6. It was determined that SAEWI's antibacterial activity against S. Typhimurium continued from day 0 (0.85 log reduction) during the cold storage. It was observed that NS and NI applications decreased the number of L. monocytogenes by 2.82 - 2.76 log/g, respectively, on day 0 as compared to the control group; and had the strongest antibacterial effect in terms of sustaining the effect during cold storage. It was found that SAEWS had a weak antibacterial effect against L. monocytogenes, but had a stronger antibacterial activity against S. Typhimurium, the most important pathogen of poultry slaughterhouses and poultry meats. In conclusion, SAEWS is a decontaminant that could be included in Salmonella control programs in slaughterhouses, due to its antibacterial effect against Salmonella species.