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A microbial biosensor system for dihalomethanes

T Henrysson1, B Mattiasson

  • 1Department of Biotechnology, Chemical Center, Lund University, Sweden.

Biodegradation
|January 1, 1993
PubMed
Summary
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A novel biosensor system effectively measures dichloromethane (DCM) and related compounds. This innovative system utilizes immobilized microbial cells and a dual-transducer approach for sensitive and continuous environmental monitoring.

Area of Science:

  • Environmental Science
  • Biotechnology
  • Analytical Chemistry

Background:

  • Dichloromethane (DCM) and other dihalomethanes are common environmental pollutants.
  • Accurate and sensitive detection methods are crucial for monitoring these compounds.
  • Existing detection methods may have limitations in sensitivity or continuous monitoring capabilities.

Purpose of the Study:

  • To develop a novel biosensor system for the detection of dichloromethane (DCM) and other dihalomethanes.
  • To utilize microbial metabolism for sensing these volatile organic compounds.
  • To establish a sensitive and continuous monitoring system for environmental analysis.

Main Methods:

  • Development of a biosensor system employing immobilized Hyphomicrobium DM2 cells in alginate.

Related Experiment Videos

  • Integration of a flow-calorimeter and a chloride-sensitive electrode as a dual-transducer system.
  • Monitoring of cellular metabolic responses to substrate pulses for analysis.

    • Main Results:

    • The biosensor system demonstrated the ability to measure dichloromethane (DCM) and other dihalomethanes.
    • A low detection limit of 0.1 microM for dichloromethane was achieved.
    • The system allowed for monitoring of different metabolic aspects from a single substrate pulse.

    Conclusions:

    • The developed biosensor offers a sensitive and effective method for detecting dichloromethane and related compounds.
    • The dual-transducer design enables comprehensive analysis of cellular metabolism.
    • The system is suitable for continuous environmental monitoring applications.