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Factors controlling acid tolerance of Listeria monocytogenes: effects of nisin and other ionophores.

Author(s) : DATTA A. R., BENJAMIN M. M.

Type of article: Article

Summary

The acid tolerance of a Listeria monocytogenes serotype 4b strain was studied by measuring its ability to survive at an acidic pH at 37 deg C. The acid tolerance of L. monocytogenes was much lower than those of Escherchia coli O157:H7 and Shigella flexneri stains. This observation suggested a higher infective dose for L. monocytogenes than E. coli O157:H7 and Shigella. The susceptibility of L. monocytogenes to acidic pH was dependent upon growth medium pH and growth phase of the culture. Nisin and some other ionophores reduced the acid tolerance.

Details

  • Original title: Factors controlling acid tolerance of Listeria monocytogenes: effects of nisin and other ionophores.
  • Record ID : 1998-2914
  • Languages: English
  • Source: Appl. environ. Microbiol. - vol. 63 - n. 10
  • Publication date: 1997/10

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