The experiment confirmed that the melamine tableware encountered high temperature "detoxification" three measures to identify true and false imitation porcelain bowls

As early as November 2008, the International Food Packaging Association made a statement, claiming that melamine tableware "containing more than 90% of toxic and harmful substances such as melamine and formaldehyde, and some enterprises used illegal urea-formaldehyde resin to produce tableware", etc., which caused social problems. A large response, many consumers expressed doubts about the safety of imitation porcelain. In recent years, there has also been an extremely cheap "imitation-like porcelain" tableware on the market, which is very different from the imitation porcelain meal, and its toxicity is more than the melamine tableware.
Imitation porcelain tableware and "imitation porcelain tableware"
 
The melamine tableware is a kind of tableware which is made of resin as raw material and looks like porcelain. It is firmer than porcelain, not easy to break, and has bright color and smooth finish. It is very popular among children.
 
Imitation porcelain tableware is also known as “fake imitation porcelain tableware”. At present, there are more inferior melamine tableware made of urea-formaldehyde resin. Hydrolysis occurs, which is harmful to the human body.
 
Hot oil test
 
The experts exchanged two kinds of imitation porcelain bowls bought in the supermarket and wholesale market into heated cooking oil with a temperature exceeding 230 °C. The formaldehyde tester showed 0.44 and 1.99 mg/m3. Moreover, the bottom of the bowl appeared in a state similar to boiling, and bubbles appeared. According to national regulations, the concentration of formaldehyde in indoor air is ≦0.08 mg/m3. After the two tableware were poured into hot oil, the formaldehyde was seriously exceeded. Why is this?
 
According to experts, melamine is a polymer plastic material called trimeric hydrogen formaldehyde resin, also known as melamine resin, which is non-toxic and can be used for food packaging. In general, the temperature resistance of melamine tableware is between -30 ° C and 120 ° C, and when the oil temperature exceeds 230 ° C, it has far exceeded its tolerance temperature, so the formaldehyde released exceeds the standard. The fake melamine tableware is made of urea formaldehyde resin which is banned by the state, and the temperature resistance is only about 80 °C.

True and false imitation porcelain bowl
 
First: recognize the place. It is best to go to a large shopping mall or supermarket to buy regular products.
 
Second: look at the label. There is a QS logo on the bottom label of the bowl (Enterprise Food Production License)
 
Third: look at the price. Urea formaldehyde resin, generally 5,000 pieces a ton, while melamine resin is about 145,000. Therefore, the formal imitation porcelain bowl is generally around 10 yuan, and the cheap is basically fake.
 
Fourth: pick the color. The most glamorous or most attractive color of the melamine bowls currently on the market is the urine aldehyde resin.
 
Imitation porcelain tableware
 
Since melamine tableware will release formaldehyde at high temperatures, is it not melamine tableware? The answer is no. Qualified melamine tableware can be placed in the refrigerator or boiled in water, as long as it does not exceed the temperature tolerance. Pay attention to the following points when using:
 
1. When using melamine tableware, do not hold acidic, oily or alkaline food for a long time;
 
2. Do not put more oily food in melamine tableware and heat it in a microwave oven to prevent the release of toxic substances.
 
3. The melamine tableware that you just bought should be boiled in boiling water for two or three minutes, or soaked in vinegar for two hours at room temperature to allow harmful substances to be released as much as possible.
 
4. Use a soft rag when cleaning melamine tableware, and scouring pad, decontamination powder and other easily scratched table surface, more susceptible to pollution, it is best not to use. Newspaper comprehensive report
 
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The variety of tableware materials is the safest
 
1. Ceramic tableware: don't choose "glaze color"
 
Long-term use of glazed tableware, the harmful metal elements in the tableware will dissolve, and enter the body with food, causing chronic poisoning. Therefore, people try not to choose the tableware with colored decorations on the inner wall.
 
2. Glass tableware: "Crystal glass" has many hidden dangers
 
The content of lead oxide in crystal products is as high as 20%~30%. It is used to hold water and generally does not cause lead poisoning. However, if it is used to hold wine, the wine will dissolve lead in crystal glass products. The longer the amount of dissolution more. Similarly, when using crystal glass containers for foods, especially cola, honey, and juice-based acidic foods, lead ions are also prone to form soluble lead salts that are ingested by the human body with beverages or foods, which is a serious health hazard.
 
3. Plastic tableware: high value but not healthy
 
Many plastic tableware have beautiful color patterns on the surface, which is easy to lead and cadmium, causing damage to the human body. On the surface of a typical plastic product, there is a protective film. Once the film is scratched by a hard device, harmful substances are released. Try to choose plastic tableware without decorative patterns, colorless and tasteless.
 
4. Stainless steel tableware: pay attention to reasonable use
 
Stainless steel is made of iron-chromium alloy mixed with trace metals such as nickel, molybdenum, titanium and manganese. These trace elements are harmful to the human body. Therefore, do not hold salt, soy sauce, vinegar, etc. for a long time, and do not use stainless steel tableware to cook Chinese medicine. The drug is prone to failure.
 
5. Aluminum tableware: Do not touch acid or alkali substances
 
Do not touch acidic and alkaline materials with aluminum utensils; aluminum basins should not be used for long-term meals and long-term salty foods; it is not advisable to use aluminum shovel to scrape the wall; do not use them with iron cutlery.