Survival and inactivation kinetics of Salmonella enterica serovar Typhimurium in irradiated and natural poultry litter microcosms

Alan Gutierrez and Keith R Schneider

PLOS ONE, 2022, vol. 17, issue 4, 1-14

Abstract: The use of poultry litter as a biological soil amendment presents a risk for the preharvest contamination of fresh produce by Salmonella. In order to properly assess this risk, it is important to understand the factors influencing the persistence of Salmonella in poultry litter. This research was performed to investigate the influence of indigenous microflora on the survival of Salmonella Typhimurium in poultry litter. Microcosms of irradiated (sterilized) and natural poultry litter were inoculated with S. Typhimurium, adjusted to pH 8.0, 0.92 water activity (aw), and stored at 30°C for 6 days. S. Typhimurium populations (log CFU g-1) declined in both litter treatments and there were no significant differences (P > 0.05) in recovery between litter treatments on any sampling days (0 to 6). The pH of the natural litter significantly increased (P

Date: 2022
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Persistent link: https://EconPapers.repec.org/RePEc:plo:pone00:0267178

DOI: 10.1371/journal.pone.0267178

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