Factors Associated with the Prevalence of Salmonella, Generic Escherichia coli, and Coliforms in Florida’s Agricultural Soils

Autor: Clara M. Diekman, Camryn Cook, Laura K. Strawn, Michelle D. Danyluk
Jazyk: angličtina
Rok vydání: 2024
Předmět:
Zdroj: Journal of Food Protection, Vol 87, Iss 5, Pp 100265- (2024)
Druh dokumentu: article
ISSN: 0362-028X
DOI: 10.1016/j.jfp.2024.100265
Popis: Limited data exist on the environmental factors that impact pathogen prevalence in the soil. The prevalence of foodborne pathogens, Salmonella and Listeria monocytogenes, and the prevalence and concentration of generic E. coli in Florida’s agricultural soils were evaluated to understand the potential risk of microbial contamination at the preharvest level. For all organisms but L. monocytogenes, a longitudinal field study was performed in three geographically distributed agricultural areas across Florida. At each location, 20 unique 5 by 5 m field sampling sites were selected, and soil was collected and evaluated for Salmonella presence (25 g) and E. coli and coliform concentrations (5 g). Complementary data collected from October 2021 to April 2022 included: weather; adjacent land use; soil properties, including macro- and micro-nutrients; and field management practices. The overall Salmonella and generic E. coli prevalence was 0.418% (1/239) and 11.3% (27/239), respectively; with mean E. coli concentrations in positive samples of 1.56 log CFU/g. Farm A had the highest prevalence of generic E. coli, 22.8% (18/79); followed by Farm B, 10% (8/80); and Farm C 1.25% (1/80). A significant relationship (p
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