植物蛋白和多之间的分子相互作用:pH作为结构和功能组装的开关
Havva Aktaş1,2, Arkadiusz Szpicer1, Barbara Strojny-Cieślak3
1Department of Technique and Food Development, Institute of Human Nutrition Sciences, Warsaw University of Life Sciences (WULS-SGGW), 02-776 Warsaw, Poland.
Foods (Basel, Switzerland)
|December 11, 2025
概括
这项研究揭示了pH值如何影响植物蛋白-多相互作用,影响抗氧化剂活性和食品配方稳定性. 性条件增强结合,但导致聚合,而特定的蛋白质在不同的pH值水平上提供独特的好处.
科学领域:
- 食品科学 食品科学 食品科学
- 生物化学 生物化学
- 材料科学 材料科学 材料科学
背景情况:
- 植物蛋白和多是天然食品的关键成分.
- 了解它们的相互作用对于食品的功能至关重要.
- pH显著影响这些复杂的相互作用.
研究的目的:
- 研究植物蛋白和多之间依赖于pH的结合机制.
- 分析蛋白质多复合物的结构转化和功能性质.
- 探索未充分利用的蛋白质的潜力,如子蛋白缩物 (MP),花蛋白粉 (PP) 和向日粉蛋白分离物 (SMP) 与红菜多 (RC).
主要方法:
- 光谱技术 (例如,UV-Vis,光) 用于研究结合和结构.
- 显微镜技术 (例如,CLSM) 用于可视化复杂的形成和乳液结构.
- 对抗氧化活性,溶解性,乳化和发泡性质进行检测.
- 调试pH值 (酸性,中性,性) 以观察其影响.
主要成果:
- 性pH (7-9) 增强了PP和SMP中通过键和疏水相互作用的安托西亚尼结合.
- 在性pH值下增加的结合导致蛋白质展开和聚合,影响溶解度.
- 在pH 9下,花蛋白粉 (PP) 显示出最高的抗氧化活性,而子蛋白缩物 (MP) 在酸性pH下保持了素稳定性.
- 乳化和泡不同:PP在酸性pH下表现出色,MP在性pH下表现出色,SMP在所有pH下表现一致.
- 同焦激光扫描显微镜 (CLSM) 证实基于SMP的乳液表现出优越的结构稳定性.
结论:
- pH 是一个关键因素,决定植物蛋白-多复合物的组装,稳定性和功能.
- 特定的蛋白质-多化合物组合和pH值条件可以优化,以实现所需的功能,如抗氧化活性和乳液稳定性.
- 这些发现支持使用未充分利用的蛋白质来源进行先进植物性食品配方的合理设计.
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