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Biochemical and Utralmicroscopic Evaluation of Myofibril Proteins and Collagen during Ageing in Broiler Chicken PSE (Pale, Sof, Exudative) Meat BABT
Marchi,Denis Fabrício; Beteto,Flávia Maria; Almeida,Gleice Rocha dos Santos; Soares,Adriana Lourenço; Hernandez-Blazquez,Francisco Javier; Ida,Elza Iouko; Shimokomaki,Massami.
Abstract The aim of this work was to study the myofibril proteins and collagen fraction changes in broiler chickens PSE (pale, soft, exudative) meat during ageing and their relationship to meat quality. The results presented an increase of myofibril proteins and collagen solubility promoted by the enhanced proteases activities during storage. Ultramicroscopically, the PSE meat samples revealed intracellularly a sarcomere super contraction and lacunas within the A and I bands while Z-lines appeared very dense and fragmented in comparison to normal samples. This observation was noticed already at 4h storage while extracellularly collagen fibrils decreased visually within the endomysium only after 24h of conditioning. These results influenced the quality as...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Cooking loss; Tenderness; Collagen content; Myofibrillar Fragmentation Index.
Ano: 2019 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132019000100503
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