Often packaged, food packed in plastic bags will not be poisoned? Why?

At present, there are three kinds of plastic bags used by people: one can neither touch the skin nor put food, but can only be used to hold building materials; The second is used for clothing; The third can be used to barely hold food. Most of these three kinds of plastic bags contain toxins. For example, PVC plastics are toxic varieties. Although its raw materials are non-toxic, toxic plasticizers are added in the process of making plastics. In addition, stabilizers are added to some plastic products, and these stabilizers are mainly lead stearate, which is also toxic, and this lead salt is easy to precipitate, which will cause cumulative lead poisoning once it enters the human body.

Most plastic bags used in the market now are not allowed to hold food. Fish stalls often use particularly dark plastic bags, such as black, red and dark blue. Most of these dark plastic bags are recycled waste plastic products, which are harmful to human health and cannot be used to hold imported food. Moreover, the ultra-thin plastic bags commonly used in food stalls are also forbidden to hold food. In addition, don't use PVC plastic products to store alcoholic food and oily food, otherwise the lead in the bag will dissolve into the food, and don't put the food with a temperature higher than 50 degrees Celsius. Vegetables are put in plastic bags, and poisonous gas released by plastic bags will run into vegetables. Therefore, it is best to buy food with a cloth bag or a vegetable basket.

Don't use plastic barrels of cooking oil. Plastic is a kind of polymer compound, which is polymerized from many monomers. A certain amount of plasticizer, stabilizer and pigment are added in the manufacturing process. According to analysis, many plastic monomers, plasticizers, stabilizers and pigments are harmful to human health. Such as PVC plastic, long-term contact with edible oil can dissolve plasticizer, which is harmful to human body, and PVC monomer is also carcinogenic. It is not good to store edible oil in the safest polyethylene plastic container for packaging food, because polyethylene is also easy to dissolve in edible oil, making edible oil waxy. The harm of plastic barreled cooking oil to human body mainly includes the following points: First, it causes anemia, hematuria and kidney enlargement. The second is to cause liver lesions in human body. The third is to cause pathological changes in the nervous system and brain center. Therefore, it is not advisable to use plastic containers for cooking oil.