FEMS Microbiology Letters · 1999 · 62 citations · 18 references
AgricultureMicrobiologyVeterinary MicrobiologyFood SafetyMicrobial EcologyPoultry MicrobiologyBacterial Diseases Of PoultryMicrobial ContaminationMicrobial QualityStorage Effects On QualityWater Activity AnalysisColony-forming Unit AssaysColony-forming Unit EnumerationPathogen Survival In StoragePoultry Manure ManagementRelative Humidity InfluenceSalmonella ReductionStorage Effects On Pathogen ViabilityWater Activity Changes
Survival of Salmonella enteritidis and Salmonella typhimurium in chicken manure at different levels of water activity (aw) was determined. The aw was adjusted by means of saturated salts with defined equilibrium relative humidity and the manure samples were stored aerobically at 20 degrees C. At aw levels higher than 0.93, a moderate increase in colony-forming units over 8-9 h was found for both strains; at aw levels of 0.89-0.75, there was a thousand-fold reduction. Extended storage resulted in a million-fold reduction of Salmonella enteritidis in 8 days at an aw of 0.89. At higher and lower levels of aw, the reduction was less extensive.
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The viable but non-culturable phenomenon explained?
Sally F. Bloomfield, Gordon S.A.B. Stewart, Christine E. R. Dodd et al. · Microbiology · 1998 · 160 citations