大豆蛋白分离物和大豆异黄之间的pH驱动相互作用对它们复合物的结构和功能性质的影响
Jing Yang1, Yanling Lu1, Yanmei Deng1
1College of Biological and Food Engineering, Southwest Forestry University, Kunming 650224, China.
Foods (Basel, Switzerland)
|November 27, 2025
概括
用pH驱动的方法创建了大豆蛋白分离物 (SPI) 和大豆异黄 (SI) 复合物. 在3.0 mg/mL SI下,可以获得最佳的功能性质,从而增强植物蛋白的功能.
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 生化学
背景情况:
- 豆蛋白分离物 (SPI) 是一种有价值的植物性蛋白质来源.
- 豆异黄 (SI) 是具有潜在健康益处的生物活性化合物.
- 调节蛋白质功能对于食品应用至关重要.
研究的目的:
- 准备和表征大豆蛋白分离-大豆异黄 (SPI-SI) 复合物.
- 调查SI度对SPI结构和属性的影响.
- 优化SPI-SI复杂化以获得增强的功能特性.
主要方法:
- 在不同度下,SPI和SI的pH驱动复杂化.
- 粒子大小分析. 粒子大小分析.
- 福里埃变换红外光谱法 (FTIR) 用于结构分析.
- 光谱学用于研究相互作用.
- 测量泽塔电位,溶解度和变质温度.
- 乳化能力和乳液稳定性测试.
主要成果:
- SPI-SI复杂的粒子大小因SI度而异.
- FTIR表明β-sheet含量降低,表明形状灵活性增加.
- 光谱学证实了SPI和SI之间的键介导相互作用.
- 最佳的物理化学特性,包括增强的溶解性和稳定性,在3.0 mg/mL SI.时被观察到.
- 乳化能力和乳液稳定性在3.0 mg/mLSI时显著改善.
结论:
- 由pH诱导的非共价SPI-SI复合有效调节蛋白质构造.
- 这种方法增强了大豆蛋白分离物的界面特性和功能.
- 该研究提出了一种绿色和有效的方法,用于改善食品系统中的植物蛋白功能.
相关概念视频
Protein Complexes with Interchangeable Parts
2.1K
2.1K
Protein Complexes with Interchangeable Parts
2.9K
Groups of proteins may form a complex where each protein in this complex has a different role in the overall execution of the complex’s function. Often some of the proteins in the complex can be replaced by a closely related variant to give a complex that contains many of the same components yet is functionally distinct.
The SCF ubiquitin ligase is a protein complex of five individual proteins. This complex attaches ubiquitin to other target proteins to mark them for degradation. In order...
The SCF ubiquitin ligase is a protein complex of five individual proteins. This complex attaches ubiquitin to other target proteins to mark them for degradation. In order...
2.9K
Protein-protein Interfaces
14.4K
Many proteins form complexes to carry out their functions, making protein-protein interactions (PPIs) essential for an organism's survival. Most PPIs are stabilized by numerous weak noncovalent chemical forces. The physical shape of the interfaces determines the way two proteins interact. Many globular proteins have closely-matching shapes on their surfaces, which form a large number of weak bonds. Additionally, many PPIs occur between two helices or between a surface cleft and a...
14.4K
Protein-Protein Interfaces
4.4K
4.4K
Protein Organization
9.0K
Proteins are polymers of amino acid residues. They are versatile and responsible for different cellular functions, including DNA replication, molecular transport, catalysis, and structural support. Proteins have a hierarchical structure comprising at least three levels of organization: primary, secondary, and tertiary structure. Some large proteins have a quaternary structure where individual protein subunits are linked together.
The primary structure of a protein is its amino acid sequence....
The primary structure of a protein is its amino acid sequence....
9.0K
Factors Affecting Protein-Drug Binding: Drug Interactions
537
Drug interactions are a critical aspect of pharmacology and can occur when two or more drugs compete for the same binding site. This competition can result in one drug displacing another, altering the effect of the displaced drug. Drug interactions are complex processes that rely heavily on how much of the displacer drug is present and how strongly it can bind to the same sites as the displaced drug.
Displacement interactions can have varying outcomes, ranging from toxicity to virtually...
Displacement interactions can have varying outcomes, ranging from toxicity to virtually...
537


