在非水性介质中具有不同表面性质的不溶性颗粒的分散行为 - - 生物聚合物基的油脂凝
Megan Holdstock1, Brent Stuart Murray1,2, Anwesha Sarkar1,2
1Food Colloids & Bioprocessing Group, School of Food Science & Nutrition, University of Leeds, LS2 9JT, UK. b.s.muray@leeds.ac.uk.
Soft matter
|September 8, 2025
概括
豆蛋白分离物 (PPI) 颗粒在油中形成弹性网络,类似于状. 减少PPI颗粒大小可以增强聚合和凝强度,揭示了蛋白质和的合体系统之间的相似之处.
科学领域:
- 合体和表面科学科学
- 食品风湿学 食品风湿学
- 材料科学 材料科学 材料科学
背景情况:
- 水友颗粒聚合在非水性介质中.
- 蛋白质,如豆蛋白分离物 (PPI),是复杂的,通常在油中不溶.
- 蛋白质可以在油中形成网络,类似于体颗粒,受大小和表面特性的影响.
研究的目的:
- 为了研究使用磨豆蛋白分离物 (PPI) 颗粒形成油凝系统.
- 为了比较PPI分散物与合体二氧化颗粒的风湿性行为.
- 了解颗粒大小和表面化学对石油中的PPI聚合和凝的影响.
主要方法:
- 介质削以将PPI颗粒大小降低到微米级.
- 对PPI油悬浮剂和合体二氧化分散物的风湿学分析.
- 应用rheological缩放模型来确定碎形尺寸.
主要成果:
- 研磨后的PPI颗粒在油中形成结构聚合物,形成弹性网络,作为油凝起作用.
- 减少PPI颗粒大小增加了聚合,表面粘度和凝强度.
- PPI颗粒 (1μm) 在11.2%重量时表现出弹性行为,碎形尺寸表明不均的微观结构.
- 较小的PPI颗粒显示了与疏水性类似的碎形特征,表明表面行为发生了变化.
结论:
- 豆蛋白分离颗粒可以形成具有可调节的质性质的油凝系统.
- 颗粒体大小的减少和表面的改变对石油中的PPI聚合和网络形成有很大的影响.
- 尽管蛋白质复杂,但它们在石油系统中的行为与更简单的合体颗粒 (如二氧化) 相似.
相关概念视频
03:00Solubility
20.9K
Solution, Solubility, and Solubility Equilibrium
A solution is a homogeneous mixture composed of a solvent, the major component, and a solute, the minor component. The physical state of a solution—solid, liquid, or gas—is typically the same as that of the solvent. Solute concentrations are often described with qualitative terms such as dilute (of relatively low concentration) and concentrated (of relatively high concentration).
In a solution, the solute particles (molecules,...
A solution is a homogeneous mixture composed of a solvent, the major component, and a solute, the minor component. The physical state of a solution—solid, liquid, or gas—is typically the same as that of the solvent. Solute concentrations are often described with qualitative terms such as dilute (of relatively low concentration) and concentrated (of relatively high concentration).
In a solution, the solute particles (molecules,...
20.9K
03:22Colloids
20.7K
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...
20.7K
01:23Factors Affecting Dissolution: Particle Size and Effective Surface Area
1.6K
Dissolution kinetics, an essential aspect of oral drug delivery, is significantly influenced by the drug's particle size. According to the Noyes-Whitney dissolution model, the dissolution rate correlates directly with the drug's surface area. The larger the surface area, the higher the drug's solubility in water, leading to a faster drug dissolution rate. Reducing particle size increases the effective surface area, enhancing the dissolution process. Micronization and nanosizing are...
1.6K
01:21Factors Affecting Dissolution: Polymorphism, Amorphism and Pseudopolymorphism
673
Polymorphism refers to the existence of a drug substance in multiple crystalline forms, known as polymorphs. Recently, this term has been expanded to include solvates (forms containing a solvent), amorphous forms (non-crystalline forms), and desolvated solvates (forms from which the solvent has been removed).
Some polymorphic crystals possess lower aqueous solubility than their amorphous counterparts, leading to incomplete absorption. For instance, the oral suspension of Chloramphenicol, which...
Some polymorphic crystals possess lower aqueous solubility than their amorphous counterparts, leading to incomplete absorption. For instance, the oral suspension of Chloramphenicol, which...
673
01:17Colloids and Suspensions
3.1K
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 visible to the naked eye or seen with a magnifying glass. They are cloudy, and the suspended particles settle out after mixing. The suspended particles in a suspension settle out after some time of mixing. The separation of particles from a suspension is...
3.1K
01:10Polymers: Molecular Weight Distribution
4.7K
For any given polymer, the weight average molecular weight (Mw) is higher than, if not equal to, the number average molecular weight (Mn). The only situation in which the weight average molecular weight and the number average molecular weight are equal is when a polymer consists only of chains with equal molecular weight. However, this never happens in a synthetic polymer, since it is difficult to control the polymerization process up to a molecular level with accuracy to a hundred percent.
4.7K