The underestimated contamination of agricultural products with aflatoxins has raised serious global food safety concerns.<\/p>\n
Aflatoxins can cause serious illness in humans and animals. The effects of aflatoxin exposure may include liver cancer, reproductive problems, anemia, immune system suppression, food allergies, jaundice, and death.<\/p>\n
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Information About Aflatoxins<\/h3>\n
Aflatoxins are a family of toxins produced by certain fungi. The main fungi that produce aflatoxins are Aspergillus flavus and Aspergillus parasiticus, which are abundant in warm and humid regions of the world.<\/p>\n
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People can be exposed to aflatoxins by eating contaminated plant products (such as peanuts) or by consuming meat or dairy products from animals that ate contaminated feed. Farmers and other agricultural workers may be exposed by inhaling dust generated during the handling and processing of contaminated crops and feeds. Aflatoxin-producing fungi can contaminate crops in the field, at harvest, and during storage.<\/p>\n
Aflatoxins are generally found in agricultural crops such as corn, peanuts, cottonseed, and tree nuts – but are also found in improperly stored staple commodities such as cassava, chili peppers, millet, rice, sesame seeds, sorghum, sunflower seeds, wheat, and a variety of spices.<\/p>\n
<\/div>\n\n\t\t\t ![\"aflatoxins_toxins_food_safety_illness\"](\"http:\/\/foodsafetytrainingcertification.com\/wp-content\/uploads\/2019\/03\/aflatoxins_toxins_food_safety_illness_0002_shutterstock_711520552.jpg\")
\t\t\n\t\t\tImage Source: Shutterstock<\/span>\t\t<\/figcaption>\n\t<\/figure>\n\n <\/div>\nThere are four main types of aflatoxins: B1, B2, G1, and G2. Aflatoxin B1 is considered the most toxic and is regulated in the United States at 20 ppb in agricultural products that may be used in human food.<\/p>\n
Another type of aflatoxin, M1, can be present in milk taken from animals which have eaten feed contaminated by aflatoxin B1. Pasteurization of the milk does not protect against aflatoxin infection.<\/p>\n
<\/div>\nThe U.S. Food and Drug Administration (FDA) has set \u201cactionable limits\u201d (maximum tolerable level of total aflatoxins) for foods like corn and peanuts to try and control how much aflatoxin is can make its way into available foods sold to humans and used for livestock feed.<\/p>\n
To date, no outbreak of human illness caused by aflatoxins has been reported in the United States, but such outbreaks have occurred in some developing countries.<\/p>\n
How can aflatoxins affect humans?<\/h3>\n
The clinical effects of aflatoxins may include liver cancer, reproductive problems, anemia, immune system suppression, food allergies, jaundice, and death.<\/p>\n
Research shows that aflatoxin targets the digestive organs most, especially the liver by raising the risk for liver cancer, heptitis and liver disease. Aflatoxins are 68 times more lethal than arsenic and capable of seriously damaging human and animal livers.<\/p>\n
Children are particularly affected by aflatoxin exposure, which is associated with stunted growth, delayed development, liver damage, and liver cancer.<\/p>\n
<\/div>\n\n\t\t\t ![\"\"](\"http:\/\/foodsafetytrainingcertification.com\/wp-content\/uploads\/2019\/03\/aflatoxins_toxins_food_safety_illness_0005_shutterstock_1107032042-1.jpg\")
\t\t\n\t\t\tImage Source: Shutterstock<\/span>\t\t<\/figcaption>\n\t<\/figure>\n\n <\/div>\nEffects and symptoms aflatoxin long-term exposure can include:<\/p>\n
- \n
- food allergies<\/li>\n
- autoimmune disease reactions<\/li>\n
- inflammation that affects the heart<\/li>\n
- damage to the digestive organs including the liver and kidneys<\/li>\n
- possibly a higher risk for liver cancer, viral hepatitis (HBV) or parasite infestation<\/li>\n
- growth and development impairment<\/li>\n
- the biggest threat is the symptoms seen in patients in liver diseases: vomiting, abdominal pain, water retention, pulmonary edema, convulsions, coma, and even death<\/li>\n<\/ul>\n
How can aflatoxin exposure be reduced?<\/h3>\n
You can reduce your aflatoxin exposure by buying only major commercial brands of nuts and nut butters and by discarding nuts that look moldy, discolored, or shriveled.<\/p>\n
The foods and crops most likely to be contaminated with aflatoxin include:<\/p>\n
- \n
- peanuts<\/li>\n
- corn<\/li>\n
- milk and cheese (rarely, meat can also become contaminated due to the spreading in aflatoxin in livestock feed)<\/li>\n
- nuts (especially almonds, Brazil nuts, pecans, pistachios and walnuts)<\/li>\n
- grains including quinoa<\/li>\n
- soybeans<\/li>\n
- figs<\/li>\n
- dried spices<\/li>\n
- although it\u2019s not commonly eaten, cottonseed is also a major crop that tends to grow aflatoxin<\/li>\n<\/ul>\n
Aflatoxin molds are not entirely killed off even when corn, grains peanuts or other foods are processed or roasted, so it can even show up in things like peanut butter and many processed products. Agricultural procedures used in the processing of corn, legumes, soy and peanuts can help to reduce contamination, but the risk still cannot be totally eliminated.<\/p>\n
<\/div>\n\n\t\t\t ![\"aflatoxins_toxins_food_safety_illness\"](\"http:\/\/foodsafetytrainingcertification.com\/wp-content\/uploads\/2019\/03\/aflatoxins_toxins_food_safety_illness_0006_shutterstock_1137133679.jpg\")
\t\t\n\t\t\tImage Source: Shutterstock<\/span>\t\t<\/figcaption>\n\t<\/figure>\n\n <\/div>\nTips to Help Reduce Aflatoxin<\/h3>\n
- \n
- Don\u2019t keep grains and nuts (corn, peanuts, almonds, for example) for long periods of time. Try consuming them ideally within 1\u20132 months<\/li>\n
- Buy the freshest ingredients you can, ideally those grown close to your location and not shipped overseas. Reputable, small sellers who grow organic crops are most likely to harvest them at the right time and keep them stored properly<\/li>\n
- Store grains, corn and nuts in places that are dry and cool to prevent mold growth. You can even freeze them to prolong freshness<\/li>\n
- There\u2019s also some evidence that eating detoxifying vegetables like carrots and celery reduces the carcinogenic effects of aflatoxins and helps cleanse the liver<\/li>\n
- Milk thistle, marshmallow root and dandelion root all help cleanse the liver and can lower digestive symptoms<\/li>\n
- Activated charcoal can help bind to aflatoxin mold and carry it out of the body more easily<\/li>\n<\/ul>\n<\/div>\n
References and Additional Resources<\/h3>\n
- \n
- National Cancer Institute
\nhttps:\/\/www.cancer.gov\/about-cancer\/causes-prevention\/risk\/substances\/aflatoxins<\/a><\/li>\n- Kumar P, Mahato DK, Kamle M, Mohanta TK, Kang SG. Aflatoxins: A Global Concern for Food Safety, Human Health and Their Management. Front Microbiol. 2017;7:2170. Published 2017 Jan 17. doi:10.3389\/fmicb.2016.02170
\nhttps:\/\/www.ncbi.nlm.nih.gov\/pmc\/articles\/PMC5240007\/<\/a><\/li>\n- \n
Aflatoxin
\nhttps:\/\/en.wikipedia.org\/wiki\/Aflatoxin<\/a><\/p>\n<\/li>\n- \n
- Kumar P, Mahato DK, Kamle M, Mohanta TK, Kang SG. Aflatoxins: A Global Concern for Food Safety, Human Health and Their Management. Front Microbiol. 2017;7:2170. Published 2017 Jan 17. doi:10.3389\/fmicb.2016.02170
- National Cancer Institute