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Automated Aflatoxin Analysis Using Inline Reusable Immunoaffinity Column Cleanup and LC-Fluorescence Detection.

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A new automated system uses reusable immunoaffinity cartridges for accurate aflatoxin analysis in food. This method enhances efficiency and reduces costs for routine monitoring.

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Area of Science:

  • Food safety analysis
  • Analytical chemistry
  • Immunotechnology

Background:

  • Aflatoxins are toxic fungal metabolites posing significant risks to food safety.
  • Accurate and efficient detection methods are crucial for routine food monitoring.
  • Current methods often involve time-consuming manual sample preparation.

Purpose of the Study:

  • To develop and validate a novel, automated immunoaffinity cartridge system for aflatoxin analysis.
  • To improve sample throughput and reduce costs in aflatoxin testing.
  • To provide a robust method for routine monitoring across various food matrices.

Main Methods:

  • Development of a reusable immunoaffinity cartridge with monoclonal antibodies to aflatoxins.
  • Integration with an automated handling system for inline analysis with LC and fluorescence detection.
  • Utilizing post-column derivatization with a KOBRA® cell for quantitative analysis.

Main Results:

  • The automated system demonstrated high accuracy with recoveries exceeding 80% for aflatoxin B1 and total aflatoxins.
  • Excellent between-day repeatability for aflatoxin B1 (2.1–9.6%) across multiple food matrices and concentration levels.
  • Successful validation in independent laboratories and satisfactory performance in proficiency testing.

Conclusions:

  • The novel reusable immunoaffinity cartridge system offers a fully automated and efficient solution for aflatoxin analysis.
  • The system significantly reduces costs and increases sample throughput compared to manual methods.
  • This automated approach is suitable for routine monitoring of aflatoxins in diverse food products.