Postmortem skeletal muscle metabolism of farm animals approached with metabolomics

  • Susumu Muroya (Animal Products Research Group, NARO Institute of Livestock and Grassland Science (NILGS))
  • 투고 : 2022.09.20
  • 심사 : 2022.11.07
  • 발행 : 2023.02.01


Skeletal muscle metabolism regulates homeostatic balance in animals. The metabolic impact persists even after farm animal skeletal muscle is converted to edible meat through postmortem rigor mortis and aging. Muscle metabolites resulting from animal growth and postmortem storage have a significant impact on meat quality, including flavor and color. Metabolomics studies of postmortem muscle aging have identified metabolisms that contain signatures inherent to muscle properties and the altered metabolites by physiological adaptation, with glycolysis as the pivotal metabolism in postmortem aging. Metabolomics has also played a role in mining relevant postmortem metabolisms and pathways, such as the citrate cycle and mitochondrial metabolism. This leads to a deeper understanding of the mechanisms underlying the generation of key compounds that are associated with meat quality. Genetic background, feeding strategy, and muscle type primarily determine skeletal muscle properties in live animals and affect post-mortem muscle metabolism. With comprehensive metabolite detection, metabolomics is also beneficial for exploring biomarker candidates that could be useful to monitor meat production and predict the quality traits. The present review focuses on advances in farm animal muscle metabolomics, especially postmortem muscle metabolism associated with genetic factors and muscle type.



I greatly appreciate Dr. K. Ojima and Dr. M. Oe for their valuable suggestions and technical support; Dr. T. Gotoh and Dr. K. Matsukawa for their outstanding collaborative work; and Ms. C. Shindo, Ms. M. Ichimura, and Ms. Y. Eguchi (NILGS) for their technical assistance.


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