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

Author(s) : PALUMBO S. A., PICKARD A., CALL J. E.

Type of article: Article

Summary

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.

Details

  • Original title: Fate of Gram-positive Bacteria in reconditioned pork-processing plant water.
  • Record ID : 1999-3710
  • Languages: English
  • Source: Journal of Food Protection - vol. 62 - n. 2
  • Publication date: 1999/02
  • Document available for consultation in the library of the IIR headquarters only.

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