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Protein degradation of black carp (Mylopharyngodon piceus) muscle during cold storage.
Food Chem ; 308: 125576, 2020 Mar 05.
Artigo em Inglês | MEDLINE | ID: mdl-31648092
ABSTRACT
This study investigated the effects of cold storage at different temperatures (4, -0.5, -3, and -20 °C) on protein degradation and its relationship to structural changes of black carp muscle. At -0.5 and 4 °C, major structural changes occurred, including the formation of gaps between myofibers and myofibrils, breakage of myofibrils and myofibers, and degradation of sarcoplasmic reticulum. Gel-based proteomic analysis showed that these structural changes were accompanied by degradation of a series of myofibrillar proteins, including titin, nebulin, troponin, myosin, myomesin, myosin-binding protein, and α-actinin. Loss of extractable gelatinolytic and caseinolytic protease activities was also observed. At -3 and -20 °C, formation of ice crystals was the most noticeable change. The major proteins were degraded at different locations in the black carp muscle, and gelatinolytic and caseinolytic proteases appear to contribute to the degradation of those proteins.
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Texto completo: Disponível Coleções: Bases de dados internacionais Base de dados: MEDLINE Assunto principal: Carpas Limite: Animais Idioma: Inglês Revista: Food Chem Ano de publicação: 2020 Tipo de documento: Artigo País de afiliação: China