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Destin des bactéries Gram-positives dans l'eau retraitée d'une installation de transformation du porc.

Fate of Gram-positive Bacteria in reconditioned pork-processing plant water.

Auteurs : PALUMBO S. A., PICKARD A., CALL J. E.

Type d'article : Article

Résumé

This study investigates the responses of Enterococcus faecium (ATCC 19433), Staphylococcus aureus (196E), and Listeria monocytogenes Scott A in water from a local meat-processing plant. Each bacterium was added to a starting count of 3log10 CFU/ml and held from 5 to 28 deg C. At intervals (0, 2, 7, 14, and 21 days), aliquots were plated on appropriate selective agars. In contrast to the gram-negative bacteria studied previously and which grew, the three gram-positive bacteria survived with some slight increase in number in only nonchlorinated, reconditioned water, either filtered (0.22-micrometer pore size) or nonfiltered. The presence of chlorine in either potable or reconditioned water contributed to the rapid decline in viable counts for all three bacteria. These results further emphasize the importance of residual chlorine in preventing the growth of these Gram-positive bacteria in potable and reconditioned waters.

Détails

  • Titre original : Fate of Gram-positive Bacteria in reconditioned pork-processing plant water.
  • Identifiant de la fiche : 1999-3710
  • Langues : Anglais
  • Source : Journal of Food Protection - vol. 62 - n. 2
  • Date d'édition : 02/1999
  • Document disponible en consultation à la bibliothèque du siège de l'IIF uniquement.

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