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Influence des températures d'acclimatation et des températures d'entreposage post mortem sur le métabolisme post mortem des snappers de Nouvelle-Zélande (Pagrus auratus).

Profiles of New Zealand snapper (Pagrus auratus) postmortem metabolism as affected by acclimated temperature and postmortem storage temperature.

Auteurs : JERRETT A. R., LAW R. A., HOLLAND A. J., et al.

Type d'article : Article

Résumé

Chemical anaesthesia was used to harvest tank-reared snapper (Pagrus auratus) from late summer (19.6 °C) and winter (11.9 °C) acclimated populations in a "rested" state. Carcasses were stored in seawater at temperatures between 2 and 20 °C to investigate the effects of acclimation and storage temperature on the postmortem metabolic rate. Contour plots of postmortem muscle pH [lactic acid] and adenosine triphosphate/inosine monophosphate measurements revealed critical temperature transitions: 16-18 °C (coinciding with seasonal behavioural changes) and 4-6 °C (consistent with cold injury). DC eye surface potential (ESP) was evaluated as a noninvasive indicator of tissue-temperature interactions and showed similar patterns of critical temperature transitions.

Détails

  • Titre original : Profiles of New Zealand snapper (Pagrus auratus) postmortem metabolism as affected by acclimated temperature and postmortem storage temperature.
  • Identifiant de la fiche : 2003-2901
  • Langues : Anglais
  • Source : Ital. J. Food Sci. - vol. 67 - n. 8
  • Date d'édition : 10/2002
  • Document disponible en consultation à la bibliothèque du siège de l'IIF uniquement.

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