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Related Experiment Videos

Effect of processing on aflatoxin.

Douglas L Park1

  • 1Division of Natural Products, Center for Food Safety and Applied Nutrition, Food and Drug Administration, Washington, DC 20204, USA.

Advances in Experimental Medicine and Biology
|April 2, 2002
PubMed
Summary

Food safety is challenged by unavoidable mycotoxin contamination, like aflatoxins. Processing and decontamination methods effectively reduce aflatoxin levels in food and feed, ensuring safety and quality.

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Area of Science:

  • Food Science and Technology
  • Toxicology
  • Food Safety

Background:

  • Mycotoxins, such as aflatoxins produced by Aspergillus species, are naturally occurring toxicants that contaminate food and feed commodities.
  • Aflatoxin contamination is unpredictable and poses significant risks to food safety, affecting commodities like corn, peanuts, cottonseed, and animal products (e.g., milk).
  • Effective risk reduction strategies for aflatoxin-contaminated foods rely on specific processing and decontamination procedures.

Purpose of the Study:

  • To review and evaluate various processing and decontamination procedures for reducing aflatoxin contamination in food and feed.
  • To identify key factors influencing the efficacy of decontamination methods, including toxin stability, process type, and food matrix interactions.
  • To outline criteria for practical decontamination procedures, emphasizing toxin inactivation, residue absence, nutritional value retention, and product acceptability.

Main Methods:

  • Review of existing literature on physical, chemical, and biological methods for aflatoxin decontamination.
  • Analysis of the effectiveness of procedures such as physical cleaning, separation, dry/wet milling, ammoniation, and the use of anticaking agents.
  • Evaluation of factors influencing process effectiveness, including mycotoxin stability, food matrix interactions, and the presence of multiple mycotoxins.

Main Results:

  • Physical cleaning and separation can reduce aflatoxin levels by 40-80%.
  • Dry and wet milling redistribute aflatoxin residues into less utilized fractions.
  • Ammoniation effectively reduces aflatoxin concentrations and toxic effects by over 99%.
  • Anticaking agents bind aflatoxins, reducing animal uptake and residues in milk.

Conclusions:

  • Multiple processing and decontamination schemes are successful in reducing aflatoxin concentrations to acceptable levels.
  • The choice of decontamination method depends on factors like toxin stability, food matrix, and regulatory approval.
  • Optimal processes are cost-effective, approved by regulatory agencies, and minimize mycotoxin levels while preserving food quality and safety.

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