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Application de l'impédancemétrie à l'évaluation rapide de la contamination bactérienne dans des légumes pré-coupés réfrigérés et à la prévision de leur durée de vie microbiologique.

Application of impedimetry for rapid estimation of bacterial contamination of pre-cut chilled vegetables and prediction of their microbiological shelf-life.

Auteurs : MOHÁCSI-FARKAS C., FARKAS J., REICHART O., SÁRAY T., MÉSZÁROS L.

Résumé

Total aerobic plate counts of unirradiated and 1 kilo gray-irradiated, aerobically packaged pre-cut bell pepper and carrot cubes were followed during post-irradiation storage at various temperatures between 1 and 16°C. The same samples used for plate counting were inoculated into Don Whitley broth and conductimetric measurements were performed at 30°C for 48 hours. The logarithm of the total aerobic viable cell counts showed good linear correlation with the conductimetric detection time (TTD-) values in the range of 1000 to 100 CFU/g millions and the cell count reducing effect of low-dose irradiation did not seem to influence much this correlation. Equations were calculated from the data pairs, which expressed log CFU values as a linear function of TTD with statistically significant determination coefficients.

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Format PDF

Pages : 1997-2/EUR 18816

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    20 €

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    Gratuit

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Détails

  • Titre original : Application of impedimetry for rapid estimation of bacterial contamination of pre-cut chilled vegetables and prediction of their microbiological shelf-life.
  • Identifiant de la fiche : 2000-0261
  • Langues : Anglais
  • Source : Predictive Microbiology Applied to Chilled Foods Preservation
  • Date d'édition : 16/06/1997
  • Document disponible en consultation à la bibliothèque du siège de l'IIF uniquement.

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