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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...

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Development and Functionalization of Electrolyte-Gated Graphene Field-Effect Transistor for Biomarker Detection

Development and Functionalization of Electrolyte-Gated Graphene Field-Effect Transistor for Biomarker Detection

Published on: February 1, 2022

Recent Progress on Graphene-based Electrochemical Biosensors.

Yu Zhang¹, Jingjing Shen¹, Huihua Li¹

¹Key Laboratory for Organic Electronics and Information Displays and Institute of Advanced Materials, National Jiangsu Synergistic Innovation Center for Advanced Materials (SICAM), 9 Wenyuan Road, Nanjing, 210023, P. R. China.

Chemical Record (New York, N.Y.)

|December 20, 2015

Summary

Graphene-based electrochemical biosensors offer superior performance for detecting various biomolecules. These advancements are crucial for improving medical diagnostics and disease treatment through enhanced sensitivity and stability.

Keywords:

biosensors electrochemical biosensors enzymatic graphene nonenzymatic

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Area of Science:

Electrochemistry
Materials Science
Biotechnology

Background:

Graphene materials possess unique properties making them ideal for electrochemical biosensors.
Accurate detection of biomolecules is vital for biomedical instruments, clinical diagnosis, and disease treatment.

Purpose of the Study:

To review advancements in graphene-based electrochemical biosensors.
To discuss graphene's role in enzyme immobilization and biomolecule detection.

Main Methods:

Review of existing literature on graphene-based electrochemical biosensors.
Analysis of graphene's application in immobilizing enzymes like glucose oxidase, horseradish peroxidase, and hemoglobin.
Examination of graphene's use in detecting biomolecules such as glucose, DNA, and carcinoembryonic antigen.

Main Results:

Graphene-based biosensors demonstrate high sensitivity and wide linear detection ranges.
Low detection limits and long-term stability are characteristic of these graphene biosensors.
Effective immobilization of various enzymes has been achieved using graphene materials.

Conclusions:

Graphene-based electrochemical biosensors represent a significant advancement in biosensing technology.
These biosensors show great promise for applications in clinical diagnostics and disease management.
The unique properties of graphene enable highly accurate and stable detection of a wide array of biomolecules.