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Nasty Infectious Diseases You Want To Avoid - Mycotoxicosis

Updated on December 31, 2008

This is a type of fungus-derived metabolite found on certain kinds of food capable of causing one type of food poisoning. Ever since the Middle Ages, thousands of percent accuracy. people have died from various types of mycotoxins-most notably, ergot poisoning. But it was a 1960 turkey epidemic in England that spurred a worldwide research effort to track down the vast number of toxic compounds derived from fungus that cause these poisonings. While most of the deaths from mycotoxicosis have been among animals eating tainted food, symptoms are still found frequently enough to stop the mold from growing. It's estimated that one of the most widespread of these toxins are aflatoxins found in a wide variety of food, including grains, peanuts, tree nuts, and cottonseed meal; meat, eggs, milk, and other products from animals that consume aflatoxin-contaminated feed are additional sources of potential exposure.

Peanuts can develop a toxic mold when not properly stored, which is why consumers should never eat moldy or shriveled food (especially grains or peanuts) and should be to the hulls of the seed. cautious about eating unroasted peanuts sold in bulk.

Aflatoxin is a cancer-causing byproduct of the Aspergillus flavus mold found in peanuts, corn, wheat, rice, cottonseeds, barley, soybeans, Brazil nuts, and pistachios. The molds that produce aflatoxin grow in warm, humid climates in the southeastern United States, of the product. but the mold can also be produced in the field when rain falls on corn and wheat left in the field to dry. Aflatoxin-producing mold can even grow on plants damaged by insects or drought, poor nutrition, or unseasonable temperatures.

Aflatoxin has been called the most potent natural carcinogen known to humans; poor diet also seems to predispose animals to cancer in the wake of aflatoxin ingestion.

Still, scientists know very little about why or how the aflatoxins are produced by the mold, and because it is sometimes difficult to see, all susceptible crops are subject to routine testing in the United States. Unfortunately, it is not possible to detect the mold with 100 percent accuracy.

While the way agricultural products are stored can affect the mold's growth, the length of time of such storage is also important; the longer agricultural products are stored in bins, the greater the chance that environmental conditions favorable to aflatoxin production will be created. Stored nuts or seeds might accidentally get wet or the storage bin might not facilitate drying quickly enough to stop the mold from growing.

Aflatoxins are more common in poor-quality cereals and nuts; while most of these lowgrade products don't enter the human food market, they are sold as animal feed, which can go on to contaminate animal products (such as meat and milk). For this reason, cottonseed meal (a product often contaminated with high levels of aflatoxin) is banned for use as an animal feed. Cottonseed oil, however, rarely contains aflatoxin, since the toxin sticks to the hulls of the seeds.

Milk is commonly contaminated with aflatoxin, and powdered nonfat milk can contain eight times more than the original liquid product since the aflatoxin adheres to the milk's proteins. In addition, measurable levels of aflatoxin can be found in some baby foods that use dry milk to boost the protein content of the product.

Prevention - Pasteurization, sterilization, and dry processing techniques can substantially reduce aflatoxin contamination of dried milk. Meat products are less often contaminated because little aflatoxin is carried over into the meat, except for pig liver and kidneys. Chicken may become contaminated with aflatoxin when the bird appears to be only mildly sick.

Symptoms - In humans, aflatoxin is believed to cause liver cancer, according to some East African studies, which seem to show a correlation between the two. Epidemiological evidence also suggests men are more susceptible than women; many scientists believe a poor diet and liver disease also increase susceptibility to liver cancer as a result of aflatoxin exposure. Data from the African studies were strong enough to prompt the FDA and the EPA to develop strict regulations to control levels in food and animal food sold in the United States. Aflatoxin can also cause acute poisoning; severe liver disease has been detected in those who ingest highly contaminated food, and children around the world exhibit symptoms similar to Reyes syndrome (fever, vomiting, coma, and convulsions) after exposure.


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