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KMID : 1024619980180040292
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Food Science of Animal Resources
1998 Volume.18 No. 4 p.292 ~ p.300
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Postmortem Changes in Z-disk Domain of Titin in the Chicken Muscle
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Ahn Dong-Hyun
Park Sun-Mee
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Abstract
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This study was undertaken to determine the influence in the Z-disk domain of titin on the tenderization of meat by the structure change of myofibrillar Z-disks during post-mortem aging. After weakening the structure of Z-disks, the Z-disk region was splitted. As the results, myofibrils were fragmented by mechanical strength. Using indirect immunofluorescence microscopy, we show that the Z-disk domain of titin was disappeared from myofibrils in this period. There phenomenon were also shown by treating myofibrils with a solution containing 0.1mM . We conclude that change in Z-disk domain of titin is directly effected on the tenderization of meat during post-mortem aging and these change is due to manily calcium ions.
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KEYWORD
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postmortem change, Z-disk domain of titin, chicken
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