香精油脂质体的制造,表征和转录组分析,用于增强抗菌活性和持续释放
Zhuo Wang1, Yuanxin Bao1, Jianguo Qiu2
1College of Food Science, Sichuan Agricultural University, Yaan 625014, China.
Foods (Basel, Switzerland)
|January 10, 2026
概括
香精油装载脂质体 (OEO-Lip) 增强稳定性和抗菌活性. 这种高效的输送系统显示了通过破坏细菌膜来保存食物的潜力.
科学领域:
- 食品科学与技术 食品科学与技术
- 纳米技术 纳米技术
- 微生物学 微生物学
背景情况:
- Oregano 精油 (OEO) 具有宝贵的抗氧化和抗菌特性.
- OEO的有限稳定性和生物可用性阻碍了其实际应用.
- 脂质体封装提供了一种有前途的策略,以改善OEO的输送和疗效.
研究的目的:
- 为了准备和表征香精油装载脂质体 (OEO-Lip).
- 评估OEO-Lip的物理化学特性,稳定性和抗氧化/抗菌活性.
- 阐明OEO-Lip增强疗效背后的机制.
主要方法:
- 使用FT-IR,XRD和DSC等技术制备和描述OEO-Lip.
- 评估粒子大小,泽塔潜力,封装效率和分散.
- 评估抗氧化活性,对*大肠杆菌*和*金黄色杆菌*的抗菌效果,以及释放动力学.
- 转录基因分析以调查抗菌机制.
主要成果:
- OEO-Lip表现出最佳的物理化学特性,其粒子大小为190nm,PDI为0.183,泽塔电位为-39.8mV,封装效率为77.52%.
- 证实了OEO在脂质体内的成功封装,增强了热稳定性并保持了抗氧化活性.
- 与自由的OEO相比,OEO-Lip表现出对*E. coli*和*S. aureus*的优越和持续的抗菌作用,这归因于膜破坏和协同途径干扰.
- 与25°C相比,4°C的储存在30天内显著改善了OEO-Lip的稳定性.
结论:
- OEO-Lip是一种有效的输送系统,增强了OEO的稳定性和抗菌功效.
- 脂质体封装保护OEO并提高其在食品保存应用中的性能.
- OEO-Lip破坏细菌膜并干扰重要的细胞通路,提供了一种对抗微生物污染的新方法.
相关概念视频
Factors Affecting Dissolution: Drug Permeability, Stability and Stereochemistry
489
Orally administered drugs primarily enter the systemic circulation via passive diffusion through the intestinal membranes. The drug's absorption is influenced by drug stability in the gastrointestinal GI tract, membrane permeability, the surface area available for absorption, luminal drug concentration, and residence time in the lumen. Drug permeability can be enhanced by adjusting the lipophilicity, polarity, or molecular size of the drug, promoting its passive transport across intestinal...
489
Assembly of the Lipid Bilayer in the ER
4.0K
Biological membranes are more than just a barrier separating cell cytoplasm from the outside environment. They are highly dynamic and help maintain the integrity and physiological stability of the cells as well as membrane-bound organelles. Membranes also play vital roles in cell-to-cell and intracellular communication.
A large chunk of any biological membrane is composed of phospholipids. These lipids have a heterogeneous distribution across different subcellular organelles and even between...
A large chunk of any biological membrane is composed of phospholipids. These lipids have a heterogeneous distribution across different subcellular organelles and even between...
4.0K
Bioavailability Enhancement: Drug Permeability Enhancement
182
Body:After oral administration, poor permeability often limits the rate at which drugs are absorbed through the intestinal epithelium. Enhancing drug permeability is crucial for effective therapy, and several strategies have been developed to overcome this challenge.One effective strategy involves the use of lipid-based formulations. These formulations enhance dissolution and solubility, targeting physiological mechanisms to increase drug absorption. This includes stimulating bile salt...
182
Formation of Lipopolysaccharides
534
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,...
534
Bioavailability Enhancement: Drug Stability Enhancement and GI Retention
188
Body:Improving a drug's stability in the gastrointestinal (GI) tract is paramount for enhancing its bioavailability and therapeutic effectiveness. Various strategies are employed to protect the drug from the harsh gastric milieu and to ensure its release and absorption at the desired site within the GI tract.Polymer coatings are one such method used to shield drugs from the stomach's acidic environment. By preventing premature drug release, these coatings improve the bioavailability of unstable...
188
Biosynthesis of Lipids
511
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...
511


