劳里酸表面修饰增强了天然酵母颗粒的界面特性,用于稳定皮克林乳液
Yongmei Wang1, Jiabao Huang1, Yu Luo1
1College of Ocean Food and Biological Engineering, Jimei University, Xiamen, Fujian 361021, People's Republic of China.
Food chemistry
|August 15, 2025
概括
用劳里克酸修改酵母细胞壁制造稳定的皮克林乳液. 这些生物基稳定剂为功能性食品输送系统提供增强的吸附和强大的乳液结构.
科学领域:
- 生物材料科学 生物材料科学
- 合体和表面科学科学
- 食品科学 食品科学 食品科学
背景情况:
- 不活化的益生菌细胞壁具有适合皮克林稳定性的两性质.
- 优化这些生物基材料对于开发新型输送系统至关重要.
研究的目的:
- 用酸 (LA) 来修改无活化的酵母细胞 (YC) 壁,以增强界面吸附.
- 评估这些改性YC-LA颗粒作为皮克林乳液中的生物基稳定剂的性能.
主要方法:
- 用100:5质量比的劳里克酸对酵母细胞壁进行修改.
- 界面张力测量和乳液滴滴大小分析.
- 在各种存储条件下 (温度,pH) 评估乳液稳定性.
主要成果:
- 通过增强吸附,YC-LA颗粒显著降低了界面张力 (12.54至6.71mN/m).
- 氨酸修饰通过疏水和结合相互作用改善了吸附.
- YC-LA皮克林乳液表现出小液滴大小 (<20微米) 和在35天内以及在广泛的pH/温度范围内表现出极好的稳定性.
结论:
- 酸修饰优化了酵母细胞壁作为有效的皮克林稳定剂.
- 由此产生的YC-LA皮克林乳液表现出卓越的稳定性和结构完整性.
- 这项研究为功能性食品中的益生菌衍生O/W Pickering输送系统提供了基础.
相关概念视频
Colloidal precipitates
753
The high insolubility of some precipitates can result in an unfavorable relative supersaturation. This can lead to colloidal particles with a large surface-to-mass ratio, where adsorption is promoted. For instance, in the precipitation of silver chloride, silver ions are adsorbed on the surface of the colloidal particles, forming a primary layer. This layer attracts ions of opposite charge (such as nitrate ions), forming a diffuse secondary layer of adsorbed ions. This electric double layer...
753
Formation of Lipopolysaccharides
100
Lipopolysaccharides (LPS) are crucial components of the outer membrane of Gram-negative bacteria, serving both structural and functional roles. It contributes to membrane stability and protects bacteria from host immune responses. LPS is composed of three major regions—lipid A, a core oligosaccharide, and an O antigen. The biosynthesis and assembly of LPS involve a highly coordinated set of enzymatic reactions and transport mechanisms. Additionally, LPS is recognized as an endotoxin,...
100
Biosynthesis of Lipids
93
Microbial membranes exhibit remarkable diversity in lipid composition, reflecting evolutionary adaptations to various environmental conditions. The three domains of life—Bacteria, Archaea, and Eukarya—synthesize membrane lipids through distinct biosynthetic pathways, leading to fundamental structural differences that impact membrane stability, function, and adaptability.Fatty Acid-Based Lipids in Bacteria and EukaryaBacteria and eukaryotes share a common fatty acid biosynthesis...
93


