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Post-mortem Changes in Breast Muscles of Mule Duck

✍ Scribed by Chou, Rong-Ghi R; Lin, Kou-Joong; Tseng, Tsai-Fuh

Publisher
John Wiley and Sons
Year
1996
Tongue
English
Weight
338 KB
Volume
71
Category
Article
ISSN
0022-5142

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✦ Synopsis

Post-mortem changes in myofibril fragmentation index and degradation of myofibrillar proteins of duck breast muscles at 5Β°C was investigated.

Muscle samples were collected immediately after killing and from the stored carcasses at 5Β°C for 1, 3, 7, and 14 days past mortem. The results showed that the MFI of the breast muscles increased with time post mortem. SDS-PAGE of myofibrils indicated that the disappearance of troponin-T accompanied concurrently with the appearance of 32-30 kDa components. After 7 days of storage, a-actinin was degraded, and a 98 kDa component appeared. Titin 1 and nebulin also disappeared after post-mortem storage for 3 days.

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