Is the plastic bowl in the canteen poisonous?

Is the plastic bowl in the canteen poisonous? With the faster pace of life, people will do everything conveniently. Disposable plastic bowls can be seen everywhere in daily life, and disposable plastic bowls are our daily necessities. But some people will ask if the plastic bowl in the canteen is poisonous. Is the plastic bowl in the canteen toxic? 1

1. Is the disposable plastic bowl safe

1. The disposable plastic bowl contains a lot of hazards, such as plasticizers. When the tableware exceeds the heat resistance limit, the disposable plastic bowl releases plasticizers, which will damage the human liver and kidneys and affect the endocrine system.

2. In addition to the release of plasticizer from plastic bowls caused by high temperature, dissolved organic matter may also cause the release of harmful substances from disposable plastic bowls. For example, when cooking, we often use cooking wine, vinegar and other seasonings, and vinegar and cooking wine will produce ethyl acetate, which will destroy the benzene ring of polymer materials in disposable plastic bowls and make the substances in plastics transfer to food.

3. According to the inspection results of the Quality Supervision Bureau, the qualified rate of disposable plastic bowls and other products is less than 71%, and its safety hazards are relatively large. Some pure plastic tableware is relatively safe, but inferior disposable plastic bowls will lead to excessive dissolved residues, causing indigestion and even heavy metal poisoning.

Second, how to choose plastic products

Generally, the bottom of plastic products will have a logo of 1-6, and we need to pay attention to its logo when buying plastic products. For example, the plastic product marked 15 is made of PP, which can withstand the high temperature of 1.31 degrees. It is the only food that can be heated in the microwave oven, but its transparency is poor. The plastic product marked 16 is made of PS material, and it can't be put into the microwave oven, nor can it contain strong acids and alkaline substances.

when we buy plastic products, we can smell whether the products have peculiar smell. Generally, qualified products have no taste.

when buying plastic products, we should check whether the product information is complete, whether the plastic products are marked for food, and whether the plastic products are clean and free of impurities.

if we buy plastic toys, we should check whether the products have 3C certification, and try to choose toys with relatively thick amplitude and corner position. Usually, high-quality plastic toys are made of PVC, PP, PE and other materials, and their colors are bright. Is the plastic bowl in the canteen toxic? 2

According to its composition, plastic products can be divided into three categories: one is made of polyethylene, polypropylene and dense ammonia, which is non-toxic and harmless to human body; The other is polyester, which is the most easily released harmful gas among all compounds, such as PVC, which has been proved to be a carcinogen. The third category is containers or bottles made of polycarbonate.

When these tableware are used to hold hot water and oil, phenol methane will be released, which will interfere with endocrine after being absorbed by human body. Lead, cadmium and other metal elements in the surface pattern of many plastic tableware will cause harm to human body. There is a protective film on the surface of general plastic products. Once this film is cut, harmful substances will be released.

Therefore, consumers should try their best to choose plastic tableware with no decorative patterns, colorless and tasteless, smooth surface and strong feel. Consumers can choose plastic products marked with the words PE (polyethylene) and PP (polypropylene), which is safer. Experts believe that plastic wrap, wallpaper, water pipes and toys all contain plasticizers such as vinyl chloride added to strengthen the hardness of plastic products. These things should try to avoid contact with oily food or heating, otherwise harmful substances in the plasticizers will be dissolved out.

In addition, it is best to choose high-heat resistant polypropylene products for kitchen utensils, such as polypropylene fresh-keeping cover for microwave ovens, which will not produce toxicity when covered by microwave heating; You should also avoid storing wax, detergent, etc. in plastic cans, because these chemical gases will penetrate plastic materials after evaporation, which is harmful to your health. Is the plastic bowl in the canteen poisonous? 3

1. Colorful ceramic bowls

I have a special hobby, that is, I like to collect exquisite chopsticks and spoons. Recently, I studied painted tableware and found that many articles mentioned that painted tableware would contain heavy metals, and the heavy metals exceeded the standard. Because pigments want to be painted on ceramics, it is necessary to add cosolvent, which will contain lead, cadmium, mercury and other substances.

suggestion: don't pay too much attention to color when buying tableware. The brighter the color, the easier it is to contain heavy metals. In addition, it is not recommended to heat colored tableware in the microwave oven.

2. Imitation porcelain tableware

I believe most people don't know what melamine tableware is, but everyone knows it. Nowadays, many restaurants will use this kind of tableware, which looks beautiful like ceramics, but its performance is similar to that of plastic, which can be microwave, heated and not easily damaged.

Porcelain-like tableware is made of melamine resin and wood pulp. Melamine is a polymer, and the monomers are formaldehyde and melamine. This also caused the unsafe melamine tableware. First of all, the qualified products on the market are less than 61%. Secondly, inferior tableware will release formaldehyde and melamine.

suggestion: the choice of melamine tableware depends on the brand and quality, and the service temperature should be below 151℃.

3. Copper Tableware

People who have eaten instant-boiled mutton know that hot pot is made of ancient copper. However, copper tableware may rust, such as patina and blue alum, whose main components are basic copper carbonate and copper sulfate pentahydrate. Are toxic to the body.

suggestion: try not to use copper tableware, especially after rusting.

4, aluminum tableware

In life, aluminum tableware is rarely seen, and aluminum pots and teapots often appear at home.

Aluminum tableware does not have corrosion resistance, acid resistance and alkali resistance, so when used, aluminum will precipitate and accumulate in the body, leading to aging and memory loss for a long time.

suggestion: aluminum tableware should not be exposed to acidic or alkaline substances, and it is not suitable to store salty food for a long time, and it is not suitable to clean it with steel balls.

5. Bamboo Tableware

Isn't bamboo a natural plant, and the tableware made will also be toxic? In fact, bamboo itself is non-toxic and natural and environmentally friendly, but paint will be used on its surface. With long-term use, paint will enter the body because of high temperature and contact with food. It is carcinogenic.

suggestion: white, unpainted and odorless ones are better when purchasing.

6, plastic tableware

As we all know, plastic tableware is harmful to human body, containing substances that cause cancer and affect endocrine, and even foam tableware will release dioxins.

suggestion: for the sake of health, avoid choosing and using plastic tableware, and also for the sake of environmental protection.