Mycotoxin Testing & Analysis Guide

Purpose

This technical guide provides general research guidance for mycotoxin detection, extraction and analytical workflows.

It is intended to support laboratories working in food science, agriculture, feed research, environmental monitoring, fungal biology and analytical research.

Scope

The guide covers major mycotoxin groups and commonly used research approaches for sample preparation, extraction, cleanup and detection.

Important Mycotoxins

Sample Types

Mycotoxin testing may be performed on a wide range of sample matrices.

• Cereals and grains
• Maize and maize-based products
• Wheat and flour
• Animal feed
• Nuts and seeds
• Spices
• Dried fruits
• Food products
• Agricultural samples
• Environmental samples
• Fungal culture extracts

Sample Preparation

Sample preparation is a critical step in mycotoxin analysis because toxins may be unevenly distributed within a sample matrix.

General Workflow

Important Considerations

• Use a representative sample.
• Homogenize the sample thoroughly.
• Follow the extraction procedure specified by the assay.
• Use the correct sample-to-solvent ratio.
• Clarify extracts where necessary.
• Apply dilution or cleanup steps according to the method.
• Avoid cross-contamination between samples.

Analytical Methods

Mycotoxin ELISA Workflow

ELISA workflows vary by kit, but a general research sequence may include:

Key Considerations

• Prepare standards and controls correctly.
• Use consistent pipetting technique.
• Respect incubation times.
• Wash wells thoroughly.
• Use appropriate sample dilution.
• Read the plate within the specified time.

Lateral Flow Testing

Lateral flow assays can provide rapid screening for selected mycotoxins and are commonly used in field or routine laboratory workflows.

General Workflow

1. Prepare the sample extract.
2. Apply the specified volume to the test device.
3. Allow the reaction to develop.
4. Interpret the test according to the product instructions.

Immunoaffinity Columns

Immunoaffinity columns use antibodies to selectively capture target mycotoxins from extracted samples before analytical measurement.

Typical Workflow

Reference Standards

Reference materials may be used for assay calibration, analytical method development, validation and quality control.

Good Practice

• Store standards according to the supplier instructions.
• Prepare dilutions accurately.
• Use calibrated pipettes and volumetric equipment.
• Document lot numbers and preparation dates.
• Avoid unnecessary exposure to light or heat where applicable.

Result Interpretation

Results should be interpreted according to the analytical method, calibration system and product-specific instructions.

Important factors can include:

• Standard curve performance
• Positive and negative controls
• Sample dilution factor
• Detection range
• Limit of detection
• Matrix effects
• Replicate variability
• Recovery efficiency

Quality Control

• Use appropriate controls and standards.
• Include replicate measurements where appropriate.
• Document reagent and kit lot numbers.
• Maintain equipment calibration records.
• Use representative samples.
• Record sample preparation steps.
• Monitor extraction and recovery performance.
• Document deviations from the method.

Troubleshooting

Safety

Mycotoxin reference materials, extracted samples and analytical reagents should be handled according to relevant laboratory safety procedures.

• Use appropriate personal protective equipment.
• Follow chemical safety documentation.
• Avoid direct contact with mycotoxin standards.
• Handle extraction solvents in suitable laboratory conditions.
• Dispose of waste according to institutional and local requirements.

Research Use Notice