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Simultaneous mixture analysis using a dynamic microbial sensor combined with chemometrics.

M Slama1, C Zaborosch, D Wienke

  • 1Institut für Chemo- und Biosensorik, Mendelstrasse 7, D-48149 Muenster, Germany, and Stuttgart Technology Center, Sony Deutschland GmbH, Stuttgarter Strasse 106, D-70736 Fellbach (Stuttgart), Germany.

Analytical Chemistry
|May 31, 2011
PubMed
Summary
This summary is machine-generated.

This study introduces a microbial sensor flow injection analyzer (FIA) for simultaneous analysis of organic mixtures. This dynamic microbial sensor offers a cost-effective alternative for process monitoring and analysis.

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Area of Science:

  • Analytical Chemistry
  • Biotechnology
  • Environmental Science

Background:

  • Traditional methods for analyzing organic mixtures can be expensive and complex.
  • Microbial biosensors offer a promising alternative for real-time monitoring.
  • Flow injection analysis (FIA) provides a platform for rapid sample processing.

Purpose of the Study:

  • To develop and validate a microbial sensor flow injection analyzer (FIA) for simultaneous multicomponent analysis.
  • To investigate the time-resolved metabolic responses of immobilized microbial cells to organic analytes.
  • To demonstrate the application of chemometrics for analyzing complex mixtures using this biosensor system.

Main Methods:

  • Immobilization of microbial cells onto an oxygen electrode within a flow-through system.
  • Utilizing flow injection analysis (FIA) for sample introduction and detection.
  • Employing chemometrical data analysis to interpret time-resolved sensor responses.

Main Results:

  • The microbial sensor FIA demonstrated distinct, time-dependent responses for individual organic analytes.
  • Sensor responses were found to be additive and linearly dependent on analyte concentrations.
  • Simultaneous analysis of organic mixtures was achieved with analytical errors below 10%.

Conclusions:

  • The developed microbial sensor FIA, termed the "dynamic microbial sensor," enables accurate simultaneous analysis of organic mixtures.
  • This approach provides a cost-effective and efficient alternative to conventional analytical equipment for process monitoring, such as enzymatic conversions.