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Survie et récupération de Listeria monocytogenes dans de la viande prête à consommer inoculée par un vecteur déshydraté de faible niveau nutritionnel.

Survival and recovery of Listeria monocytogenes on ready-to-eat meats inoculated with a desiccated and nutritionally depleted dustlike vector.

Auteurs : DE ROIN M. A., FOONG S. C. C., DIXON P. M., et al.

Type d'article : Article

Résumé

Dust from construction was theorized to serve as a vector for L. monocytogenes transmission to ready-to-eat (RTE) meats after heat processing but before packaging. Irradiated RTE meats, including frankfurters, bologna, chopped ham, and deli-style roast beef, were inoculated with 5-strain L. monocytogenes-contaminated sand every 2 to 3 days over a period of 1 1/2 months. After inoculation, the RTE meats were vacuum packed and stored at 4 °C for 24 h. Populations of L. monocytogenes were enumerated and recovered. L. monocytogenes was demonstrated to be capable of surviving on the sand vector for >151 days at 10 °C and 88% RH, 136 days at 10 °C and 0% RH, 73 days at 22 °C and 40% RH, and 82 days at 22 °C and 0% RH. These results show that under the most conservative scenario, the 73-day-old L. monocytogenes-contaminated sand was able to attach to and be recovered from the RTE meats. This study illustrated that dust contaminated with L. monocytogenes, once in contact with meat surfaces, can survive and grow, posing a health hazard to consumers.

Détails

  • Titre original : Survival and recovery of Listeria monocytogenes on ready-to-eat meats inoculated with a desiccated and nutritionally depleted dustlike vector.
  • Identifiant de la fiche : 2003-3018
  • Langues : Anglais
  • Source : Journal of Food Protection - vol. 66 - n. 6
  • Date d'édition : 06/2003
  • Document disponible en consultation à la bibliothèque du siège de l'IIF uniquement.

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