• 食品工程 •

### 常压等离子体射流对鸡肉肌原纤维蛋白结构和流变特性的影响

1. （郑州轻工业大学食品与生物工程学院，河南省冷链食品质量安全控制重点实验室，食品生产与安全河南省协同创新中心，河南?郑州 450001）
• 出版日期:2020-10-15 发布日期:2020-10-23
• 基金资助:
“十三五”国家重点研发计划重点专项（2018YFD0401200）；河南省重大科技专项（161100110900）； 河南省重点研发与推广专项（192102110107）；河南省高等学校青年骨干教师培养计划项目（2019GGJS128）； 2020年度河南省青年托举人才工程项目（2020HYTP030）

### Effect of Atmospheric Pressure Plasma Jet on Structural and Rheological Properties of Chicken Myofibrillar Protein

LI Ke, LI Yan, KANG Chaodi, XIANG Qisen, ZHAO Dianbo, BAI Yanhong

1. (Henan Key Laboratory of Cold Chain Food Quality and Safety Control, Henan Province Collaborative Innovation Center for Food Production and Safety, College of Food and Bioengineering, Zhengzhou University of Light Industry, Zhengzhou 450001, China)
• Online:2020-10-15 Published:2020-10-23

Abstract: To evaluate the effect of atmospheric pressure plasma jet (APPJ) on the structure and rheological properties of chicken myofibrillar proteins (MP), MP samples were treated by APPJ for different durations (0, 10, 20, 30 and 40 s) and then measured for their pH, turbidity, particle size, solubility, protein composition, structural and rheological properties. The results showed that as APPJ treatment time prolonged, the pH and solubility of MP were gradually decreased, and the turbidity and particle size were significantly increased (P < 0.05). APPJ treatment increased the storage modulus (G’) and loss modulus (G’’) at each elevated temperature and angular frequency. Reduced and non-reduced sodium dodecyl sulfate-polyacrylamide gel electrophoresis (SDS-PAGE) showed that the composition and molecular mass of MP were not changed. In addition, the total content of disordered secondary structures (β-turn and random coil) in MP were increased, while the total content of ordered secondary structures (α-helix and β-sheet) were reduced. The tertiary and quaternary structures of MP were also changed by APPJ. The surface hydrophobicity was increased, and the content of free sulfhydryl groups was increased firstly and then decreased. In summary, APPJ can modify the physicochemical properties and structure of chicken MP, and improve the rheological properties, thereby affecting MP function and muscle quality.