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Related Experiment Videos

A high sensitivity amperometric biosensor using laccase as biorecognition element.

Fabio Vianello1, Santa Ragusa, Maria Teresa Cambria

  • 1Department of Biological Chemistry, University of Padua, Viale G. Colombo 3, 35121 Padova, Italy.

Biosensors & Bioelectronics
|November 19, 2005
PubMed
Summary

A novel amperometric flow biosensor utilizing immobilized laccase enzyme offers sensitive detection of phenolics. This robust biosensor provides stable, calibration-free measurements in various aqueous samples, including industrial wastewater.

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Area of Science:

  • Biotechnology
  • Electrochemistry
  • Environmental Science

Background:

  • Phenolic compounds are prevalent environmental contaminants.
  • Accurate detection of phenolics is crucial for environmental monitoring and industrial process control.
  • Existing detection methods can be complex and require extensive sample preparation.

Purpose of the Study:

  • To develop and characterize an amperometric flow biosensor for phenolic compound detection.
  • To immobilize laccase enzyme for enhanced stability and reusability.
  • To optimize biosensor performance for sensitive and reliable phenolic analysis.

Main Methods:

  • Development of an amperometric flow biosensor using laccase from Rigidoporus lignosus.
  • Enzyme immobilization onto a hydrophilic matrix via carbodiimide chemistry.

Related Experiment Videos

  • Optimization of biosensor operational conditions (pH) within a flow injection analysis (FIA) system.

    • Main Results:

    • The immobilized laccase demonstrated kinetic characterization towards various phenolics.
    • The biosensor achieved high sensitivity (100 nA/µM) and stability (>100 working days).
    • Detection of phenolics at nanomolar concentrations was possible without prior sample preparation.

    Conclusions:

    • The developed biosensor offers a sensitive, stable, and calibration-free method for phenolic detection.
    • This technology is suitable for real-time monitoring of phenolics in complex matrices like olive oil mill wastewater.
    • The biosensor presents a valuable tool for environmental analysis and industrial effluent monitoring.