Partager

Conséquences de la diminution des concentrations en nitrites sur la prolifération de la bactérie Clostridium perfringens lors du refroidissement des plats préparés.

Implications of decreased nitrite concentrations on clostridium perfringens outgrowth during cooling of ready-to-eat meats.

Auteurs : MYERS M. I., SEBRANEK J. G., DICKSON J. S., et al.

Type d'article : Article

Résumé

Increased popularity of natural and organic processed meats can be attributed to the growing consumer demand for preservative-free foods, including processed meats. To meet this consumer demand, meat processors have begun using celery juice concentrate in place of sodium nitrite to create products labeled as no-nitrate or no-nitrite-added meat products while maintaining the characteristics unique to conventionally cured processed meats. Because of flavor limitations, natural cures with celery concentrate typically provide lower ingoing nitrite concentrations for ready-to-eat processed meats than do conventional cures, which could allow for increased growth of pathogens, such as Clostridium perfringens, during cooked product cooling such as that required by the U.S. Department of Agriculture. The objective of this study was to investigate the implications associated with reduced nitrite concentrations for preventing C. perfringens outgrowth during a typical cooling cycle used for cooked products. Nitrite treatments of 0, 50, and 100 ppm were tested in a broth system inoculated with a three-strain C. perfringens cocktail and heated with a simulated product thermal process followed by a typical cooling-stabilization process. The nitrite concentration of 50 ppm was more effective for preventing C. perfringens outgrowth than was 0 ppm but was not as effective as 100 ppm. The interaction between nitrite and temperature significantly affected (P < 0.05) C. perfringens outgrowth in both total population and number of vegetative cells. Both temperature and nitrite concentration significantly affected (P < 0.05) C. perfringens spore survival, but the interaction between nitrite and temperature did not have a significant effect (P > 0.05) on spore outgrowth. Results indicate that decreased nitrite concentrations (50 ppm) have increased potential for total C. perfringens population outgrowth during cooling and may require additional protective measures, such as faster chilling rates.

Détails

  • Titre original : Implications of decreased nitrite concentrations on clostridium perfringens outgrowth during cooling of ready-to-eat meats.
  • Identifiant de la fiche : 30016806
  • Langues : Anglais
  • Source : Journal of Food Protection - vol. 79 - n. 1
  • Date d'édition : 01/2016
  • DOI : http://dx.doi.org/10.4315/0362-028X.JFP-15-301

Liens


Voir la source

Indexation