改造技术对大豆蛋白分离物的影响:物理化学特征,蛋白质形状和凝性质
Yingying Ma1, Fusheng Chen1,2, Dingyang Lv1
1College of Food Science and Technology, Henan University of Technology, Zhengzhou, China.
Journal of food science
|August 4, 2025
概括
通过创建更密集的网络,pH转移显著改善大豆蛋白分离物 (SPI) 凝特性. 这种修改增强了凝强度,保持水分和热稳定性,这对于植物性食品开发至关重要.
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
- 可持续的粮食系统 可持续的粮食系统
背景情况:
- 植物性蛋白质,如大豆蛋白分离物 (SPI),对于可持续的粮食发展至关重要.
- 由于SPI的紧结构限制了其应用,因为溶解度低.
- 提高SPI的功能性质是植物基凝食品创新的关键.
研究的目的:
- 为了研究pH值变化,大豆蛋白纤维化 (SPF) 和轻度加热对SPI的影响.
- 分析SPI的物理化学特性,蛋白质构造和凝性质的变化.
- 确定最佳的修改技术,以提高SPI凝的功能.
主要方法:
- 物理化学分析包括粒子大小和硫含量.
- 湿度的风湿学测量. 粘度.
- 用于蛋白质结构分析的光谱技术 (FTIR,光).
- 凝性质的评估:凝强度,水容量和热稳定性.
主要成果:
- 由于pH值的变化,粒子大小减少,硫基含量增加.
- 所有处理都增加了粘度,降低了表面的疏水性.
- 由于pH值的变化,凝网络的密度更高,凝强度提高了 (27.09g),保持水分能力提高了 (98.65%),温度稳定性也提高了.
- SPF处理导致了更宽松的凝网络结构.
结论:
- 修改技术,特别是pH转移,显著改变SPI结构并增强其凝性质.
- 改变pH值是优化植物基凝食品中SPI功能的一种有希望的方法.
- 这些发现支持通过蛋白质修饰促进可持续植物性食品的发展.
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