在RAFT聚合物表面上的菌体探针用于快速列举大肠杆菌K12的E. coli
Sallahuddin Panhwar1, Hüseyin Çelikkan2, Eylul Evran3
1Department of Analytical Chemistry, Faculty of Pharmacy, Gazi University, 06330 Ankara, Türkiye; Department of Civil Engineering, National University of Sciences and Technology, Quetta 24090, Balochistan, Pakistan.
Bioelectrochemistry (Amsterdam, Netherlands)
|August 2, 2024
概括
这项研究引入了一种新的无标签生物传感器,用于快速检测大肠杆菌K12 (E. coli K12). 基于细菌体的电化学阻抗光谱 (EIS) 试验在不到15分钟内提供了敏感和特定的细菌计数.
科学领域:
- 生物传感器技术的技术
- 电化学传感器 电化学传感器 电化学传感器
- 菌体的应用 菌体应用
背景情况:
- 准确检测病原细菌,如大肠杆菌 (大肠杆菌) 对于公共卫生至关重要.
- 现有的细菌计数方法可能耗时,需要复杂的样本准备.
研究的目的:
- 开发一种简单,快速和灵敏的无标签传感测试方法,用于精确列举大肠杆菌K12.
- 在可逆添加-碎片化链转移 (RAFT) 聚合物薄膜上利用菌体固定,用于特定的细菌检测.
主要方法:
- 使用电化学阻抗光谱 (EIS) 来测量电荷转移电阻 (Rct) 的变化.
- 菌体被协同固定在RAFT聚合物薄膜上,以创建特定的结合表面.
- 用表面增强的拉曼光谱法 (SERS) 来验证表面特性和相互作用.
主要成果:
- 阻隔度生物传感器显示线性工作范围为10^4.2-10^7.0 CFU/mL,检测极限 (LOD) 为10^1.3 CFU/mL.
- 该试验实现了15分钟的快速反应时间.
- 对非向性细菌菌株观察到高特异性 (94%) 和敏感性 (98%).
结论:
- 开发的基于菌体的电极表面可以作为一次性,无标签的阻抗度生物传感器.
- 这项技术可以在血清样本中快速实时监测大肠杆菌K12.
- 该测试为各种应用中快速准确检测细菌提供了一个有前途的工具.
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