“Prevention is better than cure.” How to Prevent Aflatoxin Contamination in Food from Farm to Table.

What is it about?

Aflatoxins are toxic substances produced by certain fungi, particularly Aspergillus flavus and Aspergillus parasiticus. They can contaminate foods such as maize, groundnuts, cereals, nuts, and spices. Exposure to aflatoxin B₁ (AFB₁) can cause liver damage and increase the risk of liver cancer. The review would explain how to prevent contamination at different stages, including: * On the farm: using resistant crop varieties, good agricultural practices, and biological control. * During harvesting and drying: harvesting at the appropriate time, drying crops rapidly, and preventing moisture accumulation. * During storage and transportation: controlling moisture and temperature, preventing insect damage, and maintaining suitable storage conditions. * During processing: sorting, cleaning, and applying appropriate food-processing methods to reduce contamination. * At retail and household level: storing food correctly, identifying damaged or mouldy products, and promoting food-safety awareness. * Across the food system: combining several preventive measures, monitoring contamination, enforcing food-safety standards, and adopting sustainable approaches.

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Photo by National Institute of Allergy and Infectious Diseases on Unsplash

Photo by National Institute of Allergy and Infectious Diseases on Unsplash

Why is it important?

Aflatoxin contamination is a major food-safety and public-health concern. Aflatoxins can contaminate staple foods, threaten human and animal health, reduce agricultural productivity, cause economic losses, and undermine food security. This topic is important for five main reasons: * Protecting human health: Aflatoxin B₁ (AFB₁) is a potent liver carcinogen. Reducing exposure can help lower the risk of aflatoxin-related disease. * Preventing food contamination: Aflatoxins can develop before harvest and during drying, storage, and transportation. Prevention at multiple stages is therefore essential. * Reducing food waste and economic losses: Contaminated crops may be rejected or discarded, affecting farmers, traders, food processors, and consumers. * Improving food security: Effective aflatoxin control helps preserve the safety and marketability of food supplies, particularly where staple crops are vulnerable to fungal contamination. * Promoting sustainable solutions: Combining good agricultural practices, biological control, proper storage, food monitoring, and appropriate processing can provide more effective protection than relying on a single intervention. Why is this review particularly valuable? Its farm-to-fork approach considers the entire food chain rather than examining individual control methods in isolation. It can identify where interventions work, where important gaps remain, and how multiple barriers can be combined into practical, sustainable strategies. The ultimate goal is to reduce aflatoxin exposure, protect public health, minimise food losses, and strengthen food safety and security.

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