Do you know waste plastic?
As we all know, there are three types of plastic products that are widely used in food packaging: polyvinyl chloride, polyethylene, and polystyrene. It is used to hold cooking oil in a short period of time, which is not harmful to human health. However, using them to hold cooking oil for a long time will contaminate the food and cause harm to the human body.
This is because this type of packaging bottle has the characteristics of high transparency and easy aging. In the air, it will be exposed to oxygen, ozone, and ultraviolet rays to produce strong odor. In addition, the polymer itself is aging. If it is used for long-term storage of cooking oil, it is easy to use. These edibles go bad.
In addition, the elemental vinyl chloride in polyvinyl chloride is not only toxic, but also easily decomposed in acid and grease to precipitate highly toxic hydrogen chloride and chlorine, plasticizers added in polyvinyl chloride, such as phthalates, All are toxic, and lead, cadmium and organotin used as stabilizers are all toxic chemicals, all of which are highly toxic and easily soluble in grease. Although plastic polystyrene is a low-toxic substance, its components styrene and volatile components ethylbenzene and cumene are toxic, and are very easily soluble in grease. Plastic polyethylene itself is not toxic. However, after it comes into contact with oil, it can decompose low-molecular-weight compounds, and these low-molecular-weight elements will be toxic when dissolved in oil.