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Provedor de dados:  ArchiMer
País:  France
Título:  Calpain and cathepsin activities in post mortem fish and meat muscles
Autores:  Cheret, Romuald
Delbarre Ladrat, Christine
De Lamballerie Anton, Marie
Verrez-bagnis, Veronique
Data:  2007
Ano:  2007
Palavras-chave:  Meat
Resumo:  Post mortem tenderization is one of the most unfavourable quality changes in fish muscle and this contrasts with muscle of mammalian meats. The tenderization can be partly attributed to the acid lysosomal cathepsins and cytosolic neutral calcium-activated calpains. In this study, these proteases from fish and bovine muscles were quantified and compared. The cathepsin B and L activities were in more important amounts in sea bass white muscle than in bovine muscle. On the other hand, cathepsin D activity was 1.4 times higher in meat that in fish muscle, while cathepsin H was negligible in both muscles. Calpain activities were similar in both types of muscle. Moreover, calpastatin (calpain endogenous inhibitor) level is 3.9 times higher in sea bass white muscle. These differential activities are considered in relation to their probable involvement in post mortem degradation of muscle. (c) 2006 Elsevier Ltd. All rights reserved.
Tipo:  Text
Idioma:  Inglês

Editor:  Elsevier
Formato:  application/pdf
Fonte:  Food Chemistry (0308-8146) (Elsevier), 2007 , Vol. 101 , N. 4 , P. 1474-1479
Direitos:  2007 Elsevier Ltd All rights reserved.

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