Vegetables are the food that every family must eat every day, so they often go to the supermarket to buy them. Some people think that vegetables in the vegetable market are cheaper, so they will go to the vegetable market to buy cheaper vegetables.

But you may not know that some unscrupulous merchants spray formaldehyde on the surface of vegetables and even soak some vegetables in formaldehyde in order to extend the shelf life of vegetables.

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What harm does formaldehyde do to human body?

A. irritation: formaldehyde will mainly cause irritation to skin and mucosa. Formaldehyde is also a prototoxic substance, which is easy to combine with protein when absorbed in high concentration, causing severe edema and irritation of respiratory tract.

B sensitization: allergic dermatitis, pigmentation, necrosis and other problems are easy to occur in direct contact with formaldehyde, and bronchial asthma is easy to be induced by inhaling high concentration formaldehyde.

C. Mutagenesis: High concentration formaldehyde is still a genotoxic substance, and high concentration inhalation in experimental animals can easily cause nasopharyngeal tumors.

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Reminder: Four kinds of vegetables contain "formaldehyde", which is not easy to wash off. Don't take it home in the whole bag.

1, doll dish

Therefore, baby cabbage is also a vegetable with high formaldehyde content. Try not to buy it for the sake of health.

2, garlic moss

Garlic moss is a common and delicious vegetable, which often appears on people's dining tables. Compared with other vegetables, the shelf life of garlic moss is relatively short. In order to prolong the shelf life of garlic moss, many merchants spray formaldehyde on the surface of garlic moss to prevent garlic moss from rotting.

When we buy garlic moss, we should try to smell it carefully to avoid the pungent smell on the surface of garlic moss. If there is, don't buy it again.

Step 3: bean sprouts

There are generally two kinds of bean sprouts, one is rootless bean sprouts and the other is rooted bean sprouts. Most people will choose rootless bean sprouts because they look white and tender, especially bright. There is a saying that the more beautiful things are, the more toxic they are. Baby tableware with a particularly bright appearance may have been soaked in formaldehyde by unscrupulous merchants.

4, bagged Flammulina velutipes

Flammulina velutipes is a kind of mushroom food, which is white and tender, contains a variety of nutrients beneficial to the body, and is also rich in vitamin E and vitamin C. It can provide energy and nutrition for the body, accelerate the peristalsis of the stomach, promote the excretion of feces and reduce its own pressure.

Flammulina velutipes tastes particularly good whether it is made into soup or cold salad. However, due to the short storage time of Flammulina velutipes, the normally picked Flammulina velutipes will not be fresh for about 1~2 days, or even mildew and rot.

In order to delay the shelf life of Flammulina velutipes, merchants will cut off the root diameter of Flammulina velutipes and soak it directly in formaldehyde water to achieve the effect of preservation. Bagged Flammulina velutipes usually has an unpleasant smell after being opened, which is usually soaked in fake spring water. For the sake of health, try to eat less of this kind of Flammulina velutipes.

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Harm of formaldehyde to children

Formaldehyde is a toxic substance, which is recognized by WHO. It will cause different degrees of damage to human skin and respiratory system, especially to weak children.

1, affecting children's liver health.

The liver is the largest detoxification organ of the human body, which mainly helps the body to decompose toxins and garbage. The child's liver organs are fragile. Long-term consumption of vegetables with excessive formaldehyde content will easily increase the burden on the liver.

2. Reduce children's immunity

Formaldehyde easily destroys children's immunity. With the passage of time, the defense ability of the system will gradually decrease, and the anti-virus ability will continue to decline. Children get sick and catch cold easily. It is precisely because of its harmfulness that the relevant departments have not included it in food raw materials and food additives.