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Profiles of New Zealand Snapper ( Pagrus auratus ) Postmortem Metabolism as Affected by Acclimated Temperature and Postmortem Storage Temperature
Author(s) -
Jerrett A.R.,
Law R.A.,
Holland A.J.,
Black. S.E.
Publication year - 2002
Publication title -
journal of food science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.772
H-Index - 150
eISSN - 1750-3841
pISSN - 0022-1147
DOI - 10.1111/j.1365-2621.2002.tb08826.x
Subject(s) - pagrus , acclimatization , inosine , zoology , inosine monophosphate , biology , pagrus major , chemistry , fishery , anatomy , adenosine , fish <actinopterygii> , biochemistry , nucleotide , ecology , gene
Chemical anesthesia (AQUI‐S TM ) 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 to 18 °C (coinciding with seasonal behavioral changes) and 4 to 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.