Chitin, heavy metals, radionuclides: why nutritionists do not favor mushrooms

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Mushrooms are rich in protein, no fat but plenty of vitamins, mineral macro — and micronutrients. In food value they sometimes equate it to the meat. Nevertheless, experts do not think the mushrooms are a dietary product and is not recommended even absolutely healthy people to include them in constant diet.

A storehouse of nutrients

Some types of edible mushrooms, or extracts from them, for example ejovice, blewits, reduce the risk of development of Alzheimer’s disease and senile dementia, say scientists from the University of Malaya (Malaysia).

All the matter in the high content ergothioneine and glutathione — amino acid, which protects cells from excess free radicals, experts say Pennsylvania state University (USA).

It is also known that mushrooms contain salts of iron, essential for prevention of anemia, iodine and vitamin B1 to support the immune system, important for heart muscle vitamin PP.

He explains that the nutritional value of mushroom mushroom is graded properties of cellulose — chitin. In nature, this substance stiffens the cell wall of fungi and the shells of insects, but it is almost not digested by man. Once in the body, this fiber puts a heavy load on the gastrointestinal tract, especially the mucous membrane of the stomach and pancreas. Abuse of mushrooms is fraught with intestinal obstruction.

Because of the peculiarities of the cellular structure of fungi, the human body is able to absorb only a third of the protein contained in them.

«The main thing is not to overdo it. Some mushrooms in the meat, flour dishes, soups permissible to diversify the diet. But the mushroom is not a product for daily food,» — emphasizes Zaynudinov.

First of all, we are talking about heavy metals (cadmium, mercury, lead, copper, manganese), radionuclides and pesticides is very dangerous for human health. As a rule, the level of heavy metals in fruit bodies of mushrooms several times higher than in the soil on which they grow. For example, mercury in mushrooms can be 550 times more than in the soil. And often this metal is found in white mushrooms (Boletus edulis). Copper accumulates in the black Lactarius (Lactarius necator), and the mushroom-parasol (Macrolepiota) especially quickly absorbs cadmium.

Why CPS recommends to collect mushrooms away from roads, highways, cities, in ecologically clean areas. Keep your distance: no closer than five hundred meters from local roads and thousands of meters from major highways with high traffic density.

From this point of view, the mushrooms growing on the trees, such as honey, preferably ground. They feed on decomposing wood, and harmful substances in them is much smaller.

© RIA Novosti / Scalaroperator in photobacteria on trees mushrooms contain less toxic compoundsChitin, heavy metals, radionuclides: why nutritionists do not favor mushrooms© RIA Novosti / Scalaroperator in photobacteria on trees mushrooms contain less toxic compounds