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Microbial Biosensors

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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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Multiplex Detection of Bacteria in Complex Clinical and Environmental Samples using Oligonucleotide-coupled Fluorescent Microspheres

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Research Progress on Multiplexed Pathogen Detection Using Optical Biosensors.

Yue Wu¹, Xing Xu¹, Yinchu Zhu¹

¹State Key Laboratory for Quality and Safety of Agro-Products, Institute of Animal Husbandry and Veterinary Science, Zhejiang Academy of Agricultural Sciences, Hangzhou 310021, China.

|June 25, 2025

Summary

This summary is machine-generated.

Optical biosensors offer rapid, on-site detection of multiple pathogens, overcoming limitations of traditional methods. This review highlights advancements in colorimetric, fluorescence, SERS, and SPR biosensors for improved food safety and disease control.

Keywords:

microfluidic devices multiple pathogens nanomaterials nucleic acid amplification optical biosensors

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Published on: March 13, 2018

Area of Science:

Biotechnology and Biosensing
Pathogen Detection Technologies
Analytical Chemistry

Background:

Accurate identification of multiple pathogens is crucial for public health, food safety, and environmental monitoring.
Traditional pathogen detection methods are often slow, complex, require skilled personnel, and are not suitable for rapid, on-site analysis.
Optical biosensors present a viable alternative due to their speed, portability, sensitivity, and multiplexing capabilities.

Purpose of the Study:

To review recent advancements in optical biosensors for simultaneous detection of multiple pathogens.
To explore the principles and applications of various optical sensing techniques in pathogen identification.
To discuss the integration of microfluidics, nucleic acid amplification technology (NAAT), and nanomaterials in optical biosensing platforms.

Main Methods:

Overview of key optical sensing principles: colorimetric, fluorescence-based, Surface-Enhanced Raman Scattering (SERS), and Surface Plasmon Resonance (SPR).
Detailed discussion of research progress and applications from the perspectives of microfluidic devices, NAAT, and nanomaterials.
Analysis of challenges and future prospects in multi-pathogen optical biosensing.

Main Results:

Optical biosensors demonstrate significant potential for rapid, sensitive, and multiplexed pathogen detection.
Integration of microfluidics, NAAT, and nanomaterials enhances the performance and applicability of optical biosensors.
Various optical techniques (colorimetric, fluorescence, SERS, SPR) are effectively applied for pathogen identification.

Conclusions:

Optical biosensors are a promising technology for overcoming the limitations of conventional multi-pathogen detection methods.
Continued innovation in sensing principles, device integration, and material science will further advance the field.
Future developments aim to improve the robustness, cost-effectiveness, and accessibility of optical biosensing for diverse applications.