乳清蛋白分离基的两性表面蛋白复合物:结构性,抗氧化和界面性质,以及分子对接分析
Yun Pan1, Wenning Wang1, Chunhua Dai2
1School of Food and Biological Engineering, Jiangsu University, Zhenjiang, 212013, China.
International journal of biological macromolecules
|March 14, 2026
概括
乳清蛋白分离物和表面素 (WPI-S) 复合物显示出增强的抗氧化和乳化特性. 这些相互作用提高了乳液稳定性和粘度,表明WPI-S是食品和药品的功能成分.
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:
- 乳清蛋白分离物 (WPI) 是一种有价值的蛋白质来源.
- 表面活性素是一种强大的生物表面活性剂,具有各种功能性质.
- 了解蛋白质-表面活性剂相互作用对于开发新型食品成分至关重要.
研究的目的:
- 为了制造和表征乳清蛋白分离物-表面素 (WPI-S) 复合物.
- 研究这些复杂物对抗氧化剂和界面性质的影响.
- 评估WPI-S稳定乳液的物理化学和学特性.
主要方法:
- WPI和表面素的非共价复合.
- 使用结,静电和疏水相互作用等技术进行结构分析.
- 抗氧化剂活性测定 (ABTS和DPPH).
- 界面属性测量 (发泡,油持有能力,乳化).
- 乳液的特征 (滴滴大小,泽塔潜力,度,均性).
- 淋病学分析 (剪切稀释,粘度,振荡性淋病学).
- 分子对接模拟. 分子对接模拟.
主要成果:
- WPI-S复合体显著提高了ABTS (3.38倍) 和DPPH (44.7%) 的清理能力.
- 发泡能力提高了157.14%,油持有能力提高了1.98倍,乳化活性提高了5.12倍.
- WPI-S乳液呈现了降低滴滴大小,更负的zeta潜力和增强的均性.
- 在乳液中,WPI-S系统显示出更高的表面粘度和类似固体的行为 (G'>G′′).
- 在WPI/S质量比为5:2的情况下,可达到最佳粘度.
结论:
- WPI和表面素之间的非共价相互作用产生具有优越抗氧化和界面功能的复合物.
- WPI-S复合物增强了乳液的物理化学和质特性.
- 这些发现阐明了WPI-S相互作用的分子机制.
- 作为食品和制药应用中的功能成分,WPI-S复合物具有显著的潜力.
相关概念视频
Micelles
135
Micelle formation is an intricate process that hinges on the properties of amphiphilic or amphipathic molecules and the conditions of the system in which they are found. Amphiphilic molecules, which have both hydrophilic (water-attracting) and hydrophobic (water-repelling) parts, play a critical role in this process.In aqueous environments, these molecules arrange themselves such that their hydrophilic heads are turned towards the water phase, while their hydrophobic tails are oriented away...
135
Surface Active Agents
62
Surfactants, named for their behavior at interfaces, positively adsorb at the interfaces of two phases, reducing interfacial tension. Their versatility as emulsifiers, detergents, and foaming agents stems from this ability. Surfactants, often termed amphiphiles, share the property of amphipathy, with molecules having both hydrophilic and hydrophobic portions. The hydrophilic part is called the head, and the hydrophobic part, including an elongated alkyl substituent, forms the tail.Surfactants...
62
Colloids
21.9K
Children at play often make suspensions such as mixtures of mud and water, flour and water, or a suspension of solid pigments in water known as tempera paint. These suspensions are heterogeneous mixtures composed of relatively large particles that are visible to the naked eye or can be seen with a magnifying glass. They are cloudy, and the suspended particles settle out after mixing. On the other hand, a solution is a homogeneous mixture in which no settling occurs and in which the dissolved...
21.9K
Detergent Purification of Membrane Proteins
6.8K
Detergents are used to purify the integral proteins of the membrane. The hydrophobic portion of the detergent can replace membrane phospholipids while solubilizing the membrane proteins. When detergent monomers reach a specific concentration in a solution called critical micelle concentration (CMC), they form micelles. Above CMC, the concentration of the detergent monomers remains in equilibrium with the micelle. The number of detergent monomers present in the CMC varies for each detergent, and...
6.8K
Protein-protein Interfaces
14.9K
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...
14.9K


