Effects of calcium and zinc ions injection on caspase-3 activation and tenderness in post-mortem beef skeletal muscles
文献类型: 外文期刊
第一作者: Huang, Feng
作者: Huang, Feng;Ding, Zhenjiang;Zhang, Chunjiang;Hu, Honghai;Zhang, Liang;Zhang, Hong;Huang, Feng;Zhang, Chunjiang;Hu, Honghai;Zhang, Liang;Zhang, Hong;Huang, Feng;Zhang, Chunjiang;Hu, Honghai;Zhang, Liang;Zhang, Hong
作者机构:
关键词: Calcium ion;caspase-3;cytochrome c;tenderisation;zinc ion
期刊名称:INTERNATIONAL JOURNAL OF FOOD SCIENCE AND TECHNOLOGY ( 影响因子:3.713; 五年影响因子:3.408 )
ISSN: 0950-5423
年卷期: 2018 年 53 卷 3 期
页码:
收录情况: SCI
摘要: This study was designed to investigate the effects of Ca2+ and Zn2+ ions injection on post-mortem tenderness and caspase activation by examining the expression of caspase-3 and cytochrome c in post-mortem beef skeletal muscles treated with Ca2+ and Zn2+. Results showed that Ca2+ ions injection accelerated post-mortem tenderisation of beef skeletal muscles, whereas Zn2+ retarded the process. In the Ca2+-injected samples, the level of caspase-3 precursor decreased markedly without the production of activated caspase-3, whereas the level of cytochrome c was increased markedly. So, Ca2+ possibly promoted caspases activation upstream of cytochrome c release, but inactivated caspase activity by calpain and/or fast depletion of ATP; whereas Zn2+ blocked the activation of procaspase-3 with no visible change in the level of cytochrome c, and the block possibly resulted from its direct inhibition on caspase-3 enzyme.
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