相关实验视频

Updated: Jul 1, 2025

Enhanced Oil Recovery using a Combination of Biosurfactants

Enhanced Oil Recovery using a Combination of Biosurfactants

Published on: June 3, 2022

甘油脂生物活性剂的胺基修饰作为有希望的生物相容抗菌剂

Tianyou Cui¹, Lianpeng Ge¹, Mengqian Zhao¹

¹School of Environmental and Biological Engineering, Nanjing University of Science and Technology, Nanjing 210094, Jiangsu, P. R. China.

Journal of agricultural and food chemistry

|March 14, 2024

概括

新的甘油脂衍生物对食物传播病原体具有强大的抗菌活性. 改性葡萄脂有效地对抗大肠杆菌和黄金葡萄球菌等细菌,同时保持农业应用的生物相容性.

科学领域:

微生物学微生物学
生物化学生物化学
农业科学农业科学

背景情况:

抗菌素耐药性对食品和农业行业构成重大威胁,需要发现新型抗菌剂.
脂,天然衍生化合物,可以通过化学修饰来增强其抗菌性质.

研究的目的:

开发和评价来自脂的新型抗菌剂,用于食品和农业.
调查胺基修饰的葡萄脂对常见的食源性病原体的疗效和生物相容性.

主要方法:

自然脂的化学修饰,以产生酸性脂 (ASLs) 和葡萄脂 (GLs).
通过胺基修饰来实现GLs的功能化,特别是产生氨酸甲基衍生物 (GLs-d-Arg-OMe).
测试改性GLs对大肠杆菌,细菌细菌,大麦芽菌,金黄色葡萄球菌和白菌的抗菌活性.

主要成果:

GLs-d-Arg-OMe表现出显著的抗菌活性,在200mg/L的剂量下消除了超过99.99%的大肠杆菌.
针对Bacillus subtilis,Bacillus cereus和Staphylococcus aureus的GLs的有效绝育剂量在16-64mg/L之间.
此外,GLs在32-64 mg/L的剂量中也显示出对Candida albicans的杀菌活性.
GLs-d-Arg-OMe表现出极好的生物相容性,治疗指数高达18.

结论:

甘油脂的胺基修饰是一种有效的策略,可以增强抗菌活性.
开发的甘油脂衍生物显示出作为食品和农业部门的新型生物相容抗生素的前景.
对这些转基因脂质的进一步研究可能会导致在这些行业中打击抗菌素耐药性的新解决方案.

关键词:

氨基酸胺的修改方法这是一种抗菌药物,具有抗菌作用.生物相容性生物相容性葡萄糖脂类是什么

更多相关视频

Anti-virulent Disruption of Pathogenic Biofilms using Engineered Quorum-quenching Lactonases

Anti-virulent Disruption of Pathogenic Biofilms using Engineered Quorum-quenching Lactonases

Published on: January 1, 2016

High-throughput Identification of Bacteria Repellent Polymers for Medical Devices

High-throughput Identification of Bacteria Repellent Polymers for Medical Devices

Published on: November 5, 2016

相关概念视频

Surface Membrane Barriers

Surface Membrane Barriers

The skin and mucous membranes serve as the primary line of defense against pathogens by providing both physical and chemical protection. These barriers are essential in preventing the entry and establishment of microbes, thereby maintaining the integrity of the host.
The outer layer of the skin, the epidermis, is a robust barrier comprising layers of closely packed keratinized cells. This dense arrangement prevents microbes from penetrating the body. The periodic shedding of epidermal cells...

Detergent Purification of Membrane Proteins

Detergent Purification of Membrane Proteins

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...

Bacterial Signaling

Bacterial Signaling

Bacterial signaling can occur within bacteria (intracellular) or between bacteria (intercellular). At times, a group of bacteria behaves like a community. To achieve this, they engage in quorum sensing, the perception of higher cell density that causes changes in gene expression. Quorum sensing involves both extracellular and intracellular signaling. The signaling cascade starts with a molecule called an autoinducer (AI). Individual bacteria produce AIs that move out of the bacterial cell...