Relationship between the characteristics of rigor-mortis-related actomyosin and muscle fiber types in the ordinary muscle of various fishes
| Autor: | Shigeto Taniyama, Katsuyasu Tachibana, Kenji Hara, Yao Wang, Katsuya Hirasaka, Qin Wang |
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| Rok vydání: | 2019 |
| Předmět: |
Dorsum
Fish Proteins 030309 nutrition & dietetics Muscle Fibers Skeletal Fish species Actomyosin ATPase Positive correlation 03 medical and health sciences 0404 agricultural biotechnology Myosin Atpase activity Animals Muscle fibre Rigor mortis 0303 health sciences Nutrition and Dietetics Chemistry Fishes Rigor Mortis 04 agricultural and veterinary sciences Actomyosin 040401 food science Biophysics Agronomy and Crop Science Food Science Biotechnology |
| Zdroj: | Journal of the science of food and agricultureREFERENCES. 99(13) |
| ISSN: | 1097-0010 |
| Popis: | Background Rigor mortis occurs when muscle extension vanishes through the irresistible coupling of actin and myosin by the consumption of adenosine triphosphate as energy. To clarify the cause of the differences in the progression of rigor mortis, seven fish species were used as samples. The superprecipitation reaction and Mg2+ -ATPase activity of actomyosin in dorsal ordinary muscle were measured, and the slope of the regression line between these two variables was calculated for each fish specimen. The fiber types of the dorsal ordinary muscle in each sample fish were discriminated by the stability of actomyosin ATPase at acid and alkaline preincubations. Result Positive correlations were found between Mg2+ -ATPase activity and the superprecipitation reaction of actomyosin in all 27 fish specimens. The slopes of the regression lines were different not only between fish species but also in fish specimens within the same species. The area ratios of pink muscle fibers and the IIa and/or IIb subtypes of white muscle fibers in the dorsal ordinary muscle were also different between fish species, as well as in specimens within the same fish species. A positive correlation was found between the area ratios of pink muscle fibers in dorsal ordinary muscle and the slopes of the regression line. Conclusion It was suggested that the differences in characteristics of rigor-mortis-related actomyosin of fish might have been caused by the differences in the interposition ratio of muscle fiber types, especially of the pink muscle fiber type, in the dorsal ordinary muscle. © 2019 Society of Chemical Industry. |
| Databáze: | OpenAIRE |
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