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Croissance de Listeria innocua dans des salades feuillues coupées et emballées sous atmosphère modifiée.

Listeria innocua growth in fresh cut mixed leafy salads packaged in modified atmosphere.

Auteurs : SCIFÒ G. O., RANDAZZO C. L., RESTUCCIA C., et al.

Type d'article : Article

Résumé

To investigate Listeria innocua fate in fresh cut mixed leafy salads, packaged both in ordinary and modified atmosphere (MA), the type strain DSM 20649 was inoculated and its behaviour was monitored by conventional and molecular approaches, during storage at 4°C. Results indicated that: fresh cut salads packaged under MA (at initial conditions of 6% CO2 and 3% O2) supported the growth of Listeria spp.; conventional plating technique could not detect L. innocua even in inoculated samples, whereas PCR-DGGE analysis showed that the L. innocua became one of the dominant species in samples packaged in MA, starting from the 3rd day of storage. The study confirms that modified atmosphere has to be applied together with other preservative techniques in order to assure the inhibition of pathogenic micro-organisms in fresh cut vegetables. [Reprinted with permission from Elsevier. Copyright, 2008].

Détails

  • Titre original : Listeria innocua growth in fresh cut mixed leafy salads packaged in modified atmosphere.
  • Identifiant de la fiche : 2009-1699
  • Langues : Anglais
  • Source : Food Control The International Journal of HACCP and Food Safety - vol. 20 - n. 7
  • Date d'édition : 07/2009

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