Dielectric barrier discharge cold plasma treatment of pork loin: Effects on muscle physicochemical properties and emulsifying properties of pork myofibrillar protein
文献类型： 外文期刊
作者： Luo, Ji 1 ; Xu, Weimin 1 ; Liu, Qiang 3 ; Zou, Ye 1 ; Wang, Daoying 1 ; Zhang, Jianhao 4 ;
作者机构： 1.Inst Agr Prod Proc, Jiangsu Acad Agr Sci, Nanjing 210014, Peoples R China
2.Anhui Normal Univ, Coll Life Sci, Wuhu 241000, Anhui, Peoples R China
3.Nanjing Univ Finance & Econ, Coll Food Sci & Engn, Nanjing 210023, Jiangsu, Peoples R China
4.Nanjing Agr Univ, Coll Food Sci & Technol, Nanjing 210095, Jiangsu, Peoples R China
关键词： Cold plasma; Myofibrillar protein; Microstructure; Emulsifying property; Protein oxidation
期刊名称：LWT-FOOD SCIENCE AND TECHNOLOGY （ 影响因子：6.056； 五年影响因子：6.295 ）
ISSN： 0023-6438
年卷期： 2022 年 162 卷
页码：
收录情况： SCI
摘要： This study aimed to investigate the effects of dielectric barrier discharge cold plasma (DBD-CP) on meat quality and emulsifying properties of pork myofibrillar protein (MP). Particle diameter, oxidation, surface hydrophobicity and emulsifying properties of MP were analyzed. Effects on meat quality were evaluated with color, pH, tenderness, and microstructure of muscle. The results showed that DBD-CP caused a significant decrease of redness and pH in meat which was related to reactive oxygen species (ROS) and reactive nitrogen species (RNS) generated in plasma. ROS induced the accumulation of metmyoglobin decreasing a* value, RNS reacted with H2O to produce acidogenic molecules. Additionally, DBD-CP increased particle size, oxidation, surface hydrophobicity, emulsifying properties of MP, the exposed hydrophobic groups could improve the combination between MP and oil. The shear force, myofibrillar fragmentation index and microstructure analysis showed that high voltage treatment, especially at 70 kV could damage the I-band, Z and M-line in sarcomere, increasing meat tenderness. Overall, DBD-CP could accelerate MP oxidation, improve meat tenderness, and promote emulsifying characteristics of MP. DBD-CP shows a potential application in improving the quality of pork muscle, but the influences of protein overoxidation need to be considered.
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