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Antimicrobial action and effects on beef quality attributes of a gaseous ozone treatment at refrigeration temperatures.

Action anti-microbienne et effets sur les attributs de qualité du boeuf d'un traitement gazeux à l'ozone à des températures de réfrigération.

Auteurs : COLL CÁRDENAS F., ANDRÉS S., GIANNUZZI L., et al.

Type d'article : Article

Résumé

The effects of gaseous ozone treatment at refrigeration temperatures, on microbial counts (total aerobic mesophilic heterotrophic microorganisms and inoculated Escherichia coli) in culture media and in beef samples were analyzed. The influence of ozone on beef quality properties such as surface color and rancidity was measured. The effect of gaseous ozone in culture media inoculated with E. coli after 3- or 24-h treatment at 0 and 4°C caused a total inactivation of this microorganism. For beef samples treated with the same gaseous ozone concentration, the highest microbial inhibition was observed at 0°C and after 24-h exposure, producing a decrease of 0.7 and 2.0 log10 cycles in E. coli and total aerobic mesophilic heterotrophic microorganism counts respectively; however, both the surface color and lipid oxidation of these beef samples were unacceptable. Shorter exposure times (3 h) to the tested ozone concentration at both temperatures (0–4°C), reduced 0.5 log10 cycles the counts of total aerobic mesophilic heterotrophic microorganisms and 0.6–1.0 log10 cycles the counts of E. coli, without changing the color or producing rancidity in beef. [Reprinted with permission from Elsevier. Copyright, 2011].

Détails

  • Titre original : Antimicrobial action and effects on beef quality attributes of a gaseous ozone treatment at refrigeration temperatures.
  • Identifiant de la fiche : 30001801
  • Langues : Anglais
  • Source : Food Control The International Journal of HACCP and Food Safety - vol. 22 - n. 8
  • Date d'édition : 08/2011
  • DOI : http://dx.doi.org/10.1016/j.foodcont.2011.03.006

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