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在大豆蛋白分离物-瑞相互作用上,德克斯介导的糖化调节机制:光谱和分子对接研究

Yufei Duan¹, Chengxiang Ye¹, Juanjuan Shao²

¹College of Public Health and Health Sciences, Tianjin University of Traditional Chinese Medicine, Tianjin 301617, China.

|August 27, 2025

概括

梅拉德反应糖化大豆蛋白分离物 (GSPI) 和素 (Que) 通过键和范德瓦尔斯力相互作用. 这种相互作用增强了GSPI-Que复合物的稳定性和抗氧化活性,为食品工业的应用提供了洞察力.

科学领域:

食品化学
生物化学
蛋白质科学

背景情况:

豆蛋白分离物 (SPI) 和德克斯 (DEX) 经历梅拉德反应,形成糖化豆蛋白分离物 (GSPI).
奎尔塞丁 (Que) 是一种具有已知的抗氧化特性的黄类化合物.
了解改性蛋白和生物活性化合物之间的相互作用对于食品开发至关重要.

研究的目的:

调查GSPI和Que之间的相互作用机制.
阐明梅拉德反应在修改这些相互作用中的作用.
评估GSPI-Que复合物的结构和抗氧化性质的影响.

主要方法:

多光谱分析 (例如光光谱,圆形二极化).
分子对接模拟以预测结合模式和能量.
对抗氧化能力的测试 (DPPH,ABTS激素清除,降低功率).

主要成果:

结合和范德瓦尔斯力介于GSPI-Que结合.
梅拉德反应显著增强了GSPI和Que之间的键.
在梅拉德反应后,GSPI-Que复合体显示有序的二次结构 (α-螺旋,β-片) 的增加.
抗氧化活性 (DPPH,ABTS,降低功率) 显著增强.

结论:

梅拉德反应提高了GSPI-Que复合物的结合亲和力和结构稳定性.
增强的结构性质与改善的抗氧化能力相关.
这些发现为在功能性食品设计中,特别是乳液中使用梅拉德反应修饰蛋白提供了理论基础.

关键词:

德克斯特兰梅拉德反应科尔西豆蛋白分离物

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