Some people think that often eat plastic containers packed food will be harmful to the body, on the grounds that these plastic containers will release plasticizers, bisphenol A, dioxins, heavy metals and other harmful substances.
1, plasticizer
Plasticizer, also known as plasticizer, is an additive that is added to hard plastic to make it more elastic and durable.pvc ) Is the most commonly used plasticizer for hard plastic, plastic containers made of PVC contain a plasticizer However, the most commonly used plastic containers for takeout plastic containers 1, 5, 6 are plastic and are themselves flexible , Without the use of plasticizers.
Even plastic containers made of PVC material can be used as long as they are made by a regular manufacturer and used properly (for example, the food should not be too high in temperature), and there is no excessive plasticization Release the agent into the food.
2, bisphenol A
There is a saying that the disposable lunch box made of plastic or resin contains a substance called estrogen that is bisphenol A. After high temperature, it will ooze out of the lunch box as the food enters the body. Long-term exposure to bisphenol A can cause cancer.
Bisphenol A is a chemical raw material, bisphenol A in food contact materials may indeed be transferred to food, however, take-out plastic containers are mainly used No. 1, No. 5, No. 6 of these three materials, do not need The use of bisphenol A. As for the harmfulness of bisphenol A to humans, there is no definitive conclusion yet, for example on carcinogenicity, animal studies have not provided convincing evidence that exposures to bisphenol A are carcinogenic.
3, dioxin
There is also argument that dioxin (PC) plastic releases dioxins when refrigerated and that dioxin is toxic and carcinogenic.
However, there is currently no plausible scientific evidence that PET plastic contains dioxins per se and that dioxins are not produced at refrigeration temperatures.
4, other chemicals
Other chemicals used to make plastics can also be released into foodstuffs. For example, plastic containers of PET material contain traces of antimony.
Antimony is a heavy metal used in the manufacture of PET. Plastic containers of PET material contain antimony released into the water when filled with water. However, studies have shown that antimony in PET bottled beverages is very low (Far below the WHO guidelines on the quality of potable water) will not pose a health risk.
In fact, there is a limited amount of chemicals in plastic containers in our country. For example, plastic containers of PET material should have antimony less than or equal to 0.05 mg / L.
All in all, we do not have to worry too much about its safety issues with regular disposable plastic containers manufactured by regular manufacturers. Of course, it is not a good thing to eat take-away too often. For example, there is no guarantee of balanced nutrition and hygiene.