Should we eat mushrooms like that?



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Kaufland offers mushroom vitamin D: How useful is this mushroom?

The Kaufland grocery retailer has been offering mushrooms for some time, whose vitamin D content is estimated to be 30 times higher than conventional mushrooms when exposed to UVB rays. Stiftung Warentest now has a closer look at spawning mushrooms and explains how reasonable they are.

Common vitamin D deficiency

Last year it was reported that around 60 percent of children and adolescents in this country have more or less depressed vitamin D levels. In addition, one study showed that about half of more than 65 people were affected by vitamin D deficiency. In general, the supply of vitamin D in Germany was considered lacking. Is it because it makes sense to enrich food with vitamin D, as happens in some fungi?

Kaufland has been offering mushrooms for some time, which should contain more vitamin D than conventional mushrooms because of UV radiation. Stiftung Warentest has now looked more closely at new foods. (Photo: ExQuisine / fotolia.com)

Now also available in Germany

Years ago, German researchers reported vitamin D-enriched mushrooms sold in the UK and Ireland.

A few months ago, the Swiss mushroom producer also launched a mushroom rich in vitamin D.

And meanwhile, food retailer Kaufland in Germany also offers cultivated mushrooms, which should be rich in vitamin D due to UV exposure.

But what are the benefits of vitamin D mushrooms?

Mushrooms are briefly illuminated with UVB light

"30 x more vitamin D" than conventionally cultivated mushrooms, "100 grams contains 125 percent of the recommended daily dose" – which promises a label of mushroom vitamin D, which is exclusively offered at Kaufland, Stiftung Warentest reports on its website.

200 grams costs around two euros.

According to a message from the wholesale store chain, mushrooms are briefly illuminated with UVB rays. According to the company, this increases the mushroom vitamin D content by a factor of 30 compared to conventional mushrooms.

Irradiation mimics processes in the wild – fungi make vitamin D abundant under the influence of sunlight.

In conventional mushroom breeding this hardly happens because they do not grow during the day. Vitamin D is said to support healthy bones and teeth.

This procedure was developed by Dr. med. Paul Urbain, Nutritionist at Freiburg University Medical Center.

Special mushrooms produced by Pilzland companies in Lower Saxony.

The irradiation procedure works

Stiftung Warentest has sent mushrooms to the lab and reported "test.de", whether the mushrooms really bring something to the vitamin D budget and whether the specified vitamin D levels are also correct.

According to the researchers, experts determined the vitamin D content of mushrooms from seven different packages and determined that the irradiation procedure worked.

The vitamin D content averages 9.6 micrograms per 100 grams, which is far above the level of ordinary breeding fungi.

Analysis of common mushroom samples only reveals about 0.3 micrograms of vitamin D per 100 grams.

Based on the average value, the vendor's promise is that vitamin D mushrooms contain 30 times more than what is called sun vitamins.

Vitamin D levels vary greatly

However, vitamin D levels vary significantly from package to package. The lowest level found in package mushrooms is 5.3 micrograms of vitamin D per 100 grams.

Instead, the highest content is 15.1 micrograms. This figure even exceeds the maximum level set by the EU for these new foods under the European Novel Food Regulation: ten micrograms per 100 grams.

However, overdose of vitamin D does not need to be feared by mushroom lovers. Even from the richest fungus of vitamin D they can eat according to the test of goods in the long run every day without a doubt some packages.

Because the vitamin D content of special mushrooms is very different, testers describe the right vitamin D content in the 6.25 microgram per 100 gram package as "shameful".

In addition, mushrooms are not properly named: Novel Food Regulations require that cultivated fungi that have been treated with UV light, "mushrooms treated with UV (Agaricus bisporus)" must be called.

But on the label only the names "Vitamin D mushrooms" and "Kulturchampignon".

Men get vitamin D mainly through the sun

"Especially now in the dark, many people suffer from vitamin D deficiency. Because the UVB content in the sun is too low for your own vitamin D production on the skin," Dr. med. Paul Urbain.

"Steinchampignon is the ideal way for vegetarians and vegans to fulfill their vitamin D needs simply and tastefully," said a nutritionist.

It is important to know, however, that people only fulfill about ten to twenty percent of their vitamin D needs through their food.

An important amount is contained in fatty sea fish such as herring and salmon. For example, egg yolks and margarine, which may be enriched with vitamin D, provide smaller amounts.

Especially, the person gets vitamin D, which is very important for bone, through the sun in the summer months.

Therefore, specialist communities recommend between March and October two to three times a week face, arms and arms open and without sunscreen with sunlight exposing – sunny sunny days but you should avoid.

According to the Robert Koch Institute (RKI), half of the time the burnt skin will be left unprotected is sufficient.

Those who live longer in the sun must protect themselves from it, for example with sunscreens. The body can store enough vitamin D supply for most people to go through the dark without symptoms of deficiency.

Take supplements

Some people still rely on vitamin D supplements. However, this should always be discussed with a family doctor.

However, dietary supplements like that are not recommended for everyone, experts warn.

In addition, some of these preparations are not recommended, but are even risky, as indicated by the test.

And the drug commission from the German medical profession (AkdÄ) shows that it can also cause overdose with vitamin D supplements.

According to the Stiftung Warentest, intake of vitamin D supplements may be useful for certain risk groups, for example in people who are bedridden or people over the age of 65, who can no longer produce vitamin D also through the skin. (Ad)

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