Seasonal effect on thermostability of myofibrillar Ca super(2+)-ATPase in freshwater fish muscle

The effect of season on the thermostability of myofibrillar Ca super(2+)-ATPase from three species of freshwater fish, silver carp, grass carp and crucian carp, was investigated. The result indicated that the thermostability of myofibrillar Ca super(2+)-ATPase showed significant seasonal changes in...

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Bibliographic Details
Published inJournal of aquatic food product technology Vol. 6; no. 2; pp. 5 - 13
Main Authors Wang, Zao, Hu, Fei, Luo, Zhao-Yao
Format Journal Article
LanguageEnglish
Published 01.01.1997
Subjects
Cyprinidae
Freshwater
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Summary:The effect of season on the thermostability of myofibrillar Ca super(2+)-ATPase from three species of freshwater fish, silver carp, grass carp and crucian carp, was investigated. The result indicated that the thermostability of myofibrillar Ca super(2+)-ATPase showed significant seasonal changes in these three species and exhibited a maximum stability in summer while a minimum in winter in terms of the inactivation rate constant, K sub(D). The seasonal change in K sub(D) was related to environmental temperature and a negative linear correlation between the logarithm of K sub(D) and environmental temperature was found (p < 0.001). The results also indicated that the specific activity of myofibrillar Ca super(2+)-ATPase showed a higher value in summer than in winter and was positively correlated with the environmental temperature.
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ISSN:1049-8850