The studies aimed at determining the influence of acetic acid concentrations on Salmonella spp. in microbiological media and on turkey carcasses. The average number of bacteria in control samples without the supplement of acetic acid was for S. Enteritidis 1.3 · 10⁸, S. Anatum 1.9 · 10⁸ and S. Typhimurium 2.3 · 10⁸. Acetic acid in agar medium at 0.1% concentration inhibited growth of studies Salmonella strains entirely. In case of acetic acid concentration of 0.05% the number of bacteria compared to the controls decreased by 6 logarithmic cycles. In case of 0.03% concentration the number of S. Anatum decreased by 5 logarithmic cycles while S. Enteritidis and S. Typhimurium by 4 logarithmic cycles. In the presence of 0.02% acetic acid S. Enteritidis and S. Typhimurium grew in numbers that were within the same logarithmic range, only S. Anatum decreased in number by one logarithmic cycle as compared to the controls. The results of studies obtained after immersing elements of turkey carcasses in acetic acid indicate that the recovery of Salmonella spp. from the samples depends on the inoculum of those bacteria in poultry carcass surface. In case of contamination with 10 colony forming units (cfu) of Salmonella spp. on the surface of a turkey carcass element and immersing it for 15 minutes in 1%, 1.5% and 2% acetic acid solutions a decrease in the number of samples from which those microorganisms were recovered as compared to the number of control samples was recorded. In case of contamination with 10² cfu on the turkey carcass surface and immersing it in tested 1%, 1.5% and 2% solutions of acetic acid for 15 minutes no influence on detection of Salmonella spp. was recorded. The inhibitory influence of acetic acid on Salmonella spp. was much more pronounced in case of the microbiological medium than in case of poultry carcasses on which satisfactory elimination of Salmonella spp. was not achieved.
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