Details

Autor(en) / Beteiligte

• Shah, D.B. (Food and Drug Administration, Washington, DC)
• Bradshaw, J.G
• Peeler, J.T

Titel

Thermal resistance of egg-associated epidemic strains of Salmonella enteritidis

Ist Teil von

• Journal of food science, 1991-03, Vol.56 (2), p.391-393

Ort / Verlag

Oxford, UK: Blackwell Publishing Ltd

Erscheinungsjahr

1991

Quelle

Wiley-Blackwell Full Collection

Beschreibungen/Notizen

• Seventeen strains of Salmonella enteritidis isolated from patients and various implicated products from 5 egg-associated outbreaks of salmonellosis were investigated for plasmid content, phage type and thermal resistance. D values obtained at 57.2 and 60 degrees C in liquid whole egg for all strains were within ranges reported by previous investigators. Sublethal heat shock at 40 degrees C for 2 hr or 48 degrees C for 30 min increased thermotolerance 2- to 3-fold. The induced thermotolerance decayed to control levels after 2-3 cycles of cell duplication at a lower temperature. Most strains contained a 39-Mda plasmid and were phage type 8. No correlation was observed between thermototerance and presence or absence of plasmid or phage type