Aflatoxins in the U.S. Food Supply
Not many of us know that aflatoxins contamination has been recorded as contributing to 25% of estimated loss of the world’s food supply. However, some of us may see aflatoxin in the news every so often being associated with food recalls. These food reliability and safety issues are why aflatoxin is on the radar of government organizations such as the U.S. Department of Agriculture and the European Food Safety Authority. What are aflatoxins? Aflatoxins are part of a larger group of toxins called mycotoxins, which are toxic metabolites that are produced by certain types of fungi and can infect agricultural commodities and make food inedible. Aflatoxins are mainly produced from the Aspergillus species, usually in poor storage or adverse weather conditions. Aspergillus is a species of filamentous fungi found in soil, seeds and grains and decaying vegetation. The contamination occurs when Aspergillus species reproduce in favorable conditions (high temperature and humidity), invading the crop. There are four major types of aflatoxins: B1, B2, G1 and G2, which are named according to the mechanisms of detection (e.g., blue or green fluorescence under UV light). Aflatoxin B1 is the most common in food and is highly toxic having carcinogenic properties. In addition to these four, there is aflatoxin M1, which is produced as a byproduct of the B1 toxin undergoing an enzymatic process in milk and milk products. Now that you know what aflatoxins are and how they’re produced, let’s explore if they could be impacting how we build our grocery lists. Aflatoxins in food Many farmers and food producers in the United States are faced with aflatoxin contamination. In the southern and midsouth regions of the US, aflatoxins have been a recurring issue in corn leading to $20+ million lost. Aflatoxin contaminations have been reported in food and animal feed being […]
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