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  2. New findings on post-mortem chicken quality changes: The ROS-influenced MAPK-JNK signaling pathway affects chicken quality by regulating muscle cell apoptosis

New findings on post-mortem chicken quality changes: The ROS-influenced MAPK-JNK signaling pathway affects chicken quality by regulating muscle cell apoptosis

  • Food Chem. 2024 Jul 1:459:140298. doi: 10.1016/j.foodchem.2024.140298.
Yunhao Ma 1 Xinran Dong 2 Ying Wang 3 Zhaoming Wang 3 Yong Xie 2 Wendi Zhang 2 Daodong Pan 4 Hui Zhou 5 Baocai Xu 6
Affiliations

Affiliations

  • 1 School of Food and Biological Engineering, Hefei University of Technology, Hefei 230601, China; College of Food Science and Engineering, Tianjin University of Science and Technology, Tianjin 300457, China.
  • 2 School of Food and Biological Engineering, Hefei University of Technology, Hefei 230601, China.
  • 3 School of Food and Biological Engineering, Hefei University of Technology, Hefei 230601, China; Engineering Research Center of Bio-process, Ministry of Education, Hefei University of Technology, Hefei 230601, China.
  • 4 College of Food & Pharmaceutical Sciences, Ningbo University, Ningbo 315211, China.
  • 5 School of Food and Biological Engineering, Hefei University of Technology, Hefei 230601, China; Mengcheng Prepared Dishes Industry Development Research Institute, Mengcheng 233500, China.
  • 6 School of Food and Biological Engineering, Hefei University of Technology, Hefei 230601, China; Engineering Research Center of Bio-process, Ministry of Education, Hefei University of Technology, Hefei 230601, China. Electronic address: baocaixu@163.com.
Abstract

Research conducted previously has demonstrated that Apoptosis significantly influences the chicken quality. While ROS are acknowledged as significant activators of Apoptosis, the precise mechanism by which they influence muscle cell Apoptosis in the post-mortem remains unclear. In this study, chicken samples were treated with rosemarinic acid and H2O2 to induce varying ROS levels, and the ROS-triggered Apoptosis mechanism in chicken muscle cells in post-mortem was analyzed. The TUNEL results revealed that elevated ROS levels in chicken were associated with a greater degree of muscle cell Apoptosis. Western-blot results suggested that sarcoplasmic ROS could initiate Apoptosis through the mitochondrial pathway by activating the MAPK-JNK signaling pathway. Moreover, TEM and shear force results demonstrated that muscle cell Apoptosis initiates myofiber fragmentation and structural damage to sarcomeres, ultimately reducing chicken tenderness. This study enhances our understanding of post-mortem muscle cell Apoptosis, providing valuable insights for regulating chicken quality.

Keywords

Apoptosis; Chicken; Meat quality; Myofibrillar protein; Post-mortem.

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