Survival and Growth of Wild-Type and rpoS-Deficient Salmonella Newport Strains in Soil Extracts Prepared with Heat-Treated Poultry Pellets

Journal of Food Protection
Manoj K ShahManan Sharma

Abstract

Manure runoff can transfer pathogens to farmlands or to water sources, leading to subsequent contamination of produce. Untreated biological soil amendments, like manure, can be contaminated with foodborne pathogens, such as Salmonella Newport, which may lead to transfer of the pathogen to fruits or vegetables. Studies have reported the occurrence and survival of Salmonella in manure or manure slurries. However, data on the survival and growth of Salmonella Newport is lacking in matrices simulating runoff. We quantified the survival and growth of wild-type (WT) Salmonella Newport and rpoS-deficient (Δ rpoS) strains in sterile and nonsterile soil extracts prepared with (amended) or without (unamended) heat-treated poultry pellets at 25°C. Salmonella Newport WT and Δ rpoS populations reached a maximum cell density of 6 to 8 log CFU/mL in 24 to 30 h in amended and unamended soil extracts and remained in stationary phase for up to 4 days. Salmonella Newport in amended soil extracts exhibited a decreased lag phase (λ , 2.87 ± 1.01 h) and greater maximum cell densities ( Nmax, 6.84 ± 1.25 CFU/mL) compared with λ (20.10 ± 9.53 h) and Nmax (5.22 ± 0.82 CFU/mL) in unamended soil extracts. In amended soil extract, the Δ rpoS strain had no...Continue Reading

References

Nov 1, 1994·International Journal of Food Microbiology·J Baranyi, T A Roberts
Dec 16, 2003·BMC Molecular Biology·Kenan C Murphy, Kenneth G Campellone
Sep 17, 2004·Journal of Toxicology and Environmental Health. Part a·Heather AuldJ Klaassen
Sep 8, 2006·Applied and Environmental Microbiology·Youwen YouZhengxia Dou
Dec 12, 2007·Journal of Applied Microbiology·M D DanylukL J Harris
Sep 5, 2008·Foodborne Pathogens and Disease·A SöderströmY Andersson
Aug 4, 2010·British Poultry Science·H N ChinivasagamP J Blackall
Jan 5, 2011·Emerging Infectious Diseases·Elaine ScallanPatricia M Griffin
Jul 24, 2013·Clinical Infectious Diseases : an Official Publication of the Infectious Diseases Society of America·Matthew R LaidlerWilliam E Keene
Nov 13, 2013·Journal of Food Protection·Judy A HarrisonGeoffrey W Zehnder
Aug 1, 2015·MMWR. Morbidity and Mortality Weekly Report·Colin BaslerStacey Bosch
Dec 24, 2018·Physical Review Letters·B P AbbottS Shandera

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