In recent days, a number of media broke out and some vegetable farmers kept cabbage fresh and prevented the spring cabbages from long-distance transportation from being piled together for fever, red roots, and rotting after two or three days. Therefore, formaldehyde was sprayed. It is reported that a large pot of formaldehyde (about 2.5 liters) is only 7 yuan. After good water, a car of 10 tons of cabbage can be sprayed with a half pot. Why does spring cabbage need to be sprayed with formaldehyde? How to tell if the cabbage is sprayed with formaldehyde? How to deal with the problem of buying formaldehyde-sprayed cabbage?
Formaldehyde may cause hepatic coma
For this burst of "formaldehyde to cabbage preservation event", the experts said that only the long-distance transport of spring cabbage may be sprayed preservatives, other fruit and vegetable varieties on the market have not yet found or heard of using formaldehyde preservation.
In general, the fresh-keeping methods of transporting Chinese cabbage are mainly based on cold storage, that is, using refrigerators to mechanically refrigerate or put ice cubes into the cabinets. However, due to economic considerations, some unscrupulous traders have adopted the harsh spray of formaldehyde. method. According to experts, formaldehyde does have antiseptic effects. It can be used in agriculture to soak seeds and disinfect seeds at a concentration of only 0.1% to 0.5%. However, it has never been known that formaldehyde can be used to spray mature cabbage.
Formaldehyde is a gas in the normal state. It is soluble in water and its concentration is 35% to 40% in aqueous formaldehyde solution, which is often referred to as formalin solution.
Formaldehyde, a colorless, irritating irritant gas, can cause damage to the skin, respiratory tract, and viscera of humans. The central nervous system anesthetized by inhalation of high levels of formaldehyde can cause severe irritation of the respiratory tract, causing edema, and eye irritation. Pain, headache, etc., can also occur bronchial asthma, or cause pulmonary edema, hepatic coma, kidney failure and so on. The World Health Organization believes that formaldehyde will cause malformations and tumor growth, and long-term exposure will also lead to genetic mutations.
Remove formaldehyde cleaning thoroughly
At present, there are no hard indicators for the detection of formaldehyde in the detection of pesticide residues in large farmers' markets. It is advisable to pay attention to the purchase and selection of spring cabbage: the spring cabbage that has been sprayed with formaldehyde will have a noticeable pungent and spicy sensation; the cabbage is left for a long time, cut vertically from the middle, and if it is found to be rotten, the outside is not bad. May be sprayed with formaldehyde solution.
If you unfortunately buy cabbage that has been sprayed with formaldehyde, you can throw away several layers of leaves from the outside and remove some of the cabbage to help. The rest is soaked in water for a while, because formaldehyde itself dissolves in water. If you soak more and rinse with running water, you may be able to dilute the formaldehyde component.
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