在ROS氧化卵白蛋白形状的温度导向变化调节热聚合行为
Jiayi Li1, Shanguang Guo1, Nan Xiao1
1The National Center for Precision Machining and Safety of Livestock and Poultry Products Joint Engineering Research Center, College of Food Science, South China Agricultural University, Guangzhou 510642, China.
Food chemistry
|February 22, 2025
概括
氧化增强了蛋白蛋白 (EWP) 的热稳定性和抗聚合性质. 这项研究揭示了活性氧物种 (ROS) 如何影响EWP.
科学领域:
- 食品科学 食品科学 食品科学
- 蛋白质化学 蛋白质化学
- 生物化学 生物化学
背景情况:
- 蛋白蛋白 (EWP) 聚合对于食品加工至关重要.
- 了解反应性氧物种 (ROS) 对EWP热行为的影响,对于优化蛋产品质量至关重要.
- 蛋白质的展开和随后的相互作用影响聚合动力学和结构.
研究的目的:
- 研究ROS对EWP在不同温度下的热聚合的影响.
- 为了阐明EWP热诱导聚合过程中的结构和疏水性变化.
- 评估氧化EWP的抗聚合功效.
主要方法:
- 度测量用于监测聚合.
- 颗粒大小分析以描述聚合物形成.
- 差分扫描热度计 (DSC) 用于评估热稳定性.
- 疏水性测试. 疏水性测试. 疏水性测试. 疏水性测试. 疏水性测试.
- 拉曼光谱用于结构分析.
主要成果:
- EWP度和颗粒大小的变化与蛋白质展开和相互作用相关.
- 聚合物结构随着温度的增加而从纤维状演变为网络状.
- 氧化显著增加了EWP的热稳定性.
- 在聚合 (249.93至2748.10) 后,表面疏水性急剧增加.
- 氧化EWP表现出显著的抗聚合特性,特别是在72°C,由于暴露的疏水性群体.
结论:
- ROS修改了EWP聚合行为,增强了热稳定性.
- 氧化诱导的结构变化,包括疏水性群体暴露,抑制聚合.
- 这些发现为改善蛋产品的热处理提供了理论支持.
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