相关实验视频

Updated: May 6, 2026

Bacterial Detection & Identification Using Electrochemical Sensors

Bacterial Detection & Identification Using Electrochemical Sensors

Published on: April 23, 2013

基于Shewanella的全细胞生物传感器的进步:关于重金属检测的全面审查

Hui Xi¹, Hui Wang², Yu Li²

¹Technology Innovation Center for Land Engineering and Human Settlements by Shaanxi Land Engineering Construction Group Co., Ltd and Xi'an Jiaotong University, School of Human Settlements and Civil Engineering, Xi'an Jiaotong University, Xi'an 710049, China.

Colloids and surfaces. B, Biointerfaces

|August 29, 2025

概括

使用Shewanella物种的全细胞生物传感器可以快速检测重金属. 环境因素和金属暴露会影响它们的效率, 但基因工程和材料改造会提高性能,

科学领域:

环境科学
生物技术
微生物学

背景情况:

全细胞生物传感器对于检测重金属毒性非常有价值,因为它们的使用方便且快速.
这些传感器中以细胞外电子转移 (EET) 闻名的Shewanella物种是敏感的生物元素.
环境因素和重金属暴露可能会对Shewanella的EET效率和耐受性产生负面影响,影响生物传感器的性能.

研究的目的:

审查环境因素和重金属暴露对Shewanella生物传感器性能的影响.
探索提高Shewanella基毒性生物传感器的效率和稳定性的策略.
提供EET原则在Shewanella毒性生物传感和最近的进步.

主要方法:

在全细胞生物传感器中对Shewanella物种进行全面的文献综述.
影响Shewanella表现的环境因素 (pH,碳来源,离子度) 的分析.
检查生物传感器增强的基因工程和材料修改策略.

主要成果:

基于Shewanella的生物传感器显示Hg2+,Pb2+和Cd2+的检测极限低至0.1μM.
响应时间在5到30分钟之间,取决于传感器配置.
环境条件和重金属暴露显著影响信号输出和传感器稳定性.

结论:

优化环境因素和采用先进策略对于提高基于Shewanella的生物传感器灵敏度和稳定性至关重要.
基因工程和材料科学为增强细胞外电子传输和传感器整体效率提供了有希望的途径.
通过改进的生物传感器设计,该审查强调了Shewanella物种在先进的重金属毒性检测方面的潜力.

关键词:

细胞外电子转移重金属微生物生物传感器谢瓦内拉毒性影响全细胞生物传感器

更多相关视频

Electrochemical Detection of Deuterium Kinetic Isotope Effect on Extracellular Electron Transport in Shewanella oneidensis MR-1

Electrochemical Detection of Deuterium Kinetic Isotope Effect on Extracellular Electron Transport in Shewanella oneidensis MR-1

Published on: April 16, 2018

An Anaerobic Biosensor Assay for the Detection of Mercury and Cadmium

An Anaerobic Biosensor Assay for the Detection of Mercury and Cadmium

Published on: December 17, 2018

相关概念视频

Microbial Bioremediation of Uranium

Microbial Bioremediation of Uranium

Microorganisms play a critical role in the transformation and immobilization of uranium in contaminated environments through four main pathways: bioreduction, biosorption, bioaccumulation, and biomineralization. These mechanisms reduce uranium’s toxicity and prevent its migration through groundwater systems, offering sustainable approaches for in situ bioremediation.Bioreduction of UraniumBioreduction is driven by anaerobic bacteria such as certain strains of Geobacter and Shewanella,...

Microbial Biosensors

Microbial Biosensors

Microbial biosensors are analytical devices that utilize living microbes to detect specific substances through measurable signals. These devices consist of two main components: biosensing organisms and signal-transducing elements. Biosensing organisms, such as Escherichia coli or Saccharomyces cerevisiae, are typically housed in multiwell plates connected to transducers, enabling rapid, real-time detection of target analytes.Signal Generation MechanismWhen a target analyte—such as...