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Microbial biosensors.

Yu Lei1, Wilfred Chen, Ashok Mulchandani

  • 1Division of Chemical and Biomolecular Engineering and Centre of Biotechnology, Nanyang Technological University, Singapore 637722, Singapore. YLei@ntu.edu.sg

Analytica Chimica Acta
|September 1, 2007
PubMed
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Microbial biosensors utilize microorganisms for rapid analyte detection across various fields. Recent advances focus on genetically engineered microbes for enhanced toxicity and bioavailability assays.

Area of Science:

  • Microbiology
  • Analytical Chemistry
  • Biotechnology

Background:

  • Microbial biosensors are analytical devices combining microorganisms and transducers for analyte detection.
  • Early biosensors relied on microbial respiratory and metabolic functions.
  • Recent advancements involve genetically engineered microorganisms with reporter genes (lux, gfp, lacZ) linked to inducible promoters.

Purpose of the Study:

  • To review recent trends in microbial biosensor development and application.
  • To discuss current advances and future directions in the field.

Main Methods:

  • Review of literature on microbial biosensor technology.
  • Focus on genetically engineered microorganisms with reporter gene fusions.
  • Analysis of applications in toxicity and bioavailability assays.

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Main Results:

  • Genetically engineered microbial biosensors offer sensitive detection of toxicity and bioavailability.
  • Reporter gene fusions (lux, gfp, lacZ) are key to recent advancements.
  • Diverse applications span medicine, environmental monitoring, defense, and food safety.

Conclusions:

  • Microbial biosensors are evolving rapidly with genetic engineering.
  • Future directions include further refinement of engineered biosensors for broader applications.
  • These biosensors provide rapid, accurate, and sensitive detection methods.