Evaluation of pre-slaughter low-current/high-frequency electrical stunning on lipid oxidative stability, antioxidant enzyme activity and gene expression of mitogen-activated protein kinase/nuclear factor erythroid 2-related factor 2 (MAPK/Nrf2) signalling pathway in thigh muscle of broilers
文献类型： 外文期刊
第一作者： Xu, Lei
作者： Xu, Lei;Wang, Jing;Yue, Hong-yuan;Qi, Guang-hai;Xu, Lei;Wang, Jing;Yue, Hong-yuan;Qi, Guang-hai;Xu, Lei;Yang, Hai-ming;Wang, Zhi-yue;Farnell, Morgan B.;Wang, Zhi-yue
作者机构：
关键词： Antioxidant enzyme; chicken; electrical stunning; lipid oxidation; low current; high frequency; MAPK; Nrf2 signalling pathway; meat quality
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： 2020 年 55 卷 3 期
页码：
收录情况： SCI
摘要： This study was aimed to evaluate the effects of pre-slaughter low-current/high-frequency (LH) electrical stunning (ES) on lipid oxidative stability, antioxidant enzyme activity and gene expression of mitogen-activated protein kinase/nuclear factor erythroid 2-related factor 2 (MAPK/Nrf2) signalling pathway in thigh muscle of broilers. Eighteen birds were randomly allocated to the following three treatments with six replicates per treatment and one bird per replicate: without stunning (control); water-bath ES with sinusoidal alternating LH (86 mA, 1000 Hz, LHES) or high current/low frequency (HL) (130 mA, 60 Hz, HLES). Stunning methods did not affect malondialdehyde level (d 0 similar to d 9) or antioxidant enzymes' activity at d 0 similar to d 2. LHES enhanced glutathione S-transferase activity at d 3 and gene expression of MAPKs and Nrf2 compared with HLES. In conclusion, LHES enhanced gene expression of MAPK/Nrf2 pathway, whereas had no superiority over HLES in lipid oxidative stability (4 degrees C, 9 days) of thigh muscle in broilers.
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