热变质对可溶性大豆多糖和素和乳清蛋白之间的相互作用的影响
Hongyang Pan1,2, Seng Zhou1, Xiaofang Chu3
1State Key Laboratory of Food Science and Resources, Jiangnan University, Wuxi 214122, China.
Molecules (Basel, Switzerland)
|November 13, 2025
概括
溶性大豆多糖化物 (SSPS) 稳定了酸性饮料中的素,但与乳清蛋白的相互作用效率较低. 热变性影响SSPS-蛋白质复合物的稳定性,这对于饮料配方至关重要.
科学领域:
- 食品科学与技术 食品科学与技术
- 生物聚合物相互作用
- 乳制品的稳定性 乳制品的稳定性
背景情况:
- 酸性牛奶饮料需要稳定剂来保持产品的完整性.
- 可溶性大豆多糖化物 (SSPS) 是一种具有潜在稳定性质的植物性化合物.
- 在加工条件下了解SSPS与牛奶蛋白的相互作用对于产品开发至关重要.
研究的目的:
- 为了研究SSPS和牛奶蛋白 (素和乳清蛋白) 之间的相互作用.
- 评估热变性对SSPS蛋白相互作用和饮料稳定性的影响.
- 为在酸性牛奶饮料中使用SSPS提供理论指导.
主要方法:
- 在不同的pH值下制备SSPS,素和乳清蛋白混合溶液.
- 使用离心沉积,颗粒大小分布,z电位,DSC,SEC和LUMisizer进行分析.
- 对素 (120-140°C) 和乳清蛋白 (65-78°C) 进行热处理.
主要成果:
- 在酸性条件下,SSPS通过固态阻碍和静电排斥与素形成稳定复合体.
- 由于聚合,SSPS对乳清蛋白的稳定性有限,阻碍了均复合体的形成.
- 素的热变性化 (140°C) 导致 κ-素解离和聚合,降低了 SSPS-素系统的稳定性.
- 增加乳清蛋白的热变性导致较大的聚合物和减少SSPS-乳清蛋白系统的稳定性.
结论:
- 在酸性系统中,SSPS有效地稳定了素,但在乳清蛋白中,它的有效性降低了.
- 热处理显著影响牛奶饮料中SSPS-蛋白相互作用的稳定性.
- 研究结果为优化SSPS在酸性乳制品中的使用提供了见解,考虑到蛋白质类型和热史.
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