Changes in the Properties of Porcine Myosin during Postmortem Aging
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概要
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Physicochemical and conformational changes, water-holding capacity (WHC) and the structure of heat-induced gel of porcine myosin were investigated to elucidate the relationship between denaturation of myosin and gelation properties during postmortem aging. The turbidity of porcine myosin upon heating increased as the period of postmortem aging increased. During postmortem aging, the increased velocity in values of aliphatic hydrophobicity of porcine myosin by heating was prominent, which suggested that porcine head was susceptible to conformational changes during storage. On the other hand, according to the changes in circular dichroism (CD) spectra of heated porcine myosin, the decrease in α-helix content was almost the same during postmortem aging, indicating no conformational changes in porcine myosin rod during aging. WHC values of porcine myosin gels showed a gradual decrease during storage. This coincided with the progressive loosening in its three dimensional ordering with increased postmortem aging period, as was revealed by SEM studies. In conclusion, conformational changes of myosin head by denaturation during postmortem aging of pork could cause a progressive loosening of heat-induced gel of porcine myosin. This result could be, in part, helpful in the subsequent use of pork in meat processing.
- 社団法人 日本食品科学工学会の論文
- 2003-08-01
著者
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Kim J‐b
Rakuno Gakuen Univ. Ebetsu‐shi
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Gekko Kunihiko
Graduate School of Science, Hiroshima University
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Gekko Kunihiko
Graduate Department Of Gene Science Faculty Of Science Hiroshima University
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Kim Jin-bo
Faculty Of Dairy Science Rakuno Gakuen University
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ISHIOROSHI Makoto
Faculty of Dairy Science, Rakuno Gakuen University
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SAMEJIMA Kunihiko
Faculty of Dairy Science, Rakuno Gakuen University
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ABDEL-MOHSEN Hala
Graduate School of Biosphere Science Hiroshima University
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NAKAMOTO Mitsutoshi
Graduate School of Biosphere Science Hiroshima University
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KIM Jim-Bo
Faculty of Dairy Science, Rakuno Gakuen University
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NOGUSA Yoshihito
Graduate School of Science Hiroshima University
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TANABE Soichi
Graduate School of Biosphere Science Hiroshima University
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NISHIMURA Toshihide
Graduate School of Biosphere Science Hiroshima University
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Gekko Kunihiko
Graduate School Of Science Hiroshima University
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Kim Jim-bo
Faculty Of Dairy Science Rakuno Gakuen University
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Tanabe S
Graduate School Of Biosphere Science Hiroshima University
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Tanabe Soichi
Graduate School Of Biosphere Sci. Hiroshima Univ.
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Samejima K
Faculty Of Dairy Science Rakuno Gakuen University
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Samejima Kunihiko
Faculty Of Dairy Science Rakuno Gakuen University
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Ishioroshi Makoto
Faculty Of Dairy Science Rakuno Gakuen University
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