How to use plastic wrap healthily and correctly

　　The cling film currently sold on the market is mainly divided into three categories in terms of raw materials: the first category is polyethylene (PE or LDPE), which is mainly used for packaging ordinary fruits and vegetables; the second category is polyvinylidene chloride (PVDC), which is mainly used for packaging of some cooked food, ham and other products; the third category is polyvinyl chloride (PVC), which can also be used for food packaging, but it is harmful to the human body. healthy There is a certain impact.

　　How to choose plastic wrap

　　Experts said that the cling film currently sold on the market is mainly divided into three categories in terms of raw materials: the first category is polyethylene (PE or LDPE), which is mainly used for the packaging of ordinary fruits and vegetables; the second category is polyvinylidene chloride (PVDC), which is mainly used for the packaging of some cooked food, ham and other products; the third category is polyvinyl chloride (PVC), which can also be used for food packaging, but it has a certain impact on human health. In terms of raw materials, polyethylene and polyvinylidene chloride cling film are relatively safe for the human body.

　　When consumers buy plastic wrap on a daily basis, they mainly distinguish between polyethylene and polyvinyl chloride products. There are generally three ways to buy safe plastic wrap, namely "look, touch, and burn".”

　　Take a look to see if there is a product description. If it is covered with PE cling film or polyethylene cling film, you can use it with confidence.

　　2. "Touch" Polyethylene cling film generally has poor viscosity and transparency, and is easy to open after rubbing with hands, while PVC cling film has better transparency and viscosity, and is difficult to unfold after rubbing with hands, and it is easy to stick to the hands.

　　After the three "burning" polyethylene cling film is ignited with fire, the flame will be yellow, will not go out when removed from the fire source, will drip oil, and will have no pungent odor.

　　Use plastic wrap correctly

　　Experts say that according to their uses, the cling film on the market can be roughly divided into two categories: one is ordinary cling film, suitable for refrigerator preservation; the other is microwave cling film, which can be used for both refrigerator and microwave preservation. The latter kind of plastic wrap is far superior to ordinary plastic wrap in terms of heat resistance and non-toxicity. Generally speaking, food that uses plastic wrap correctly can be kept fresh for about a week at room temperature.

　　When using plastic wrap, if the utensils are covered with plastic wrap, do not fill them so as not to touch the food. When using microwave cling film, avoid contact between food and the film, especially oily foods. The plastic wrap covering the utensils when heating food should have a few small holes poked in it to prevent it from bursting. When using, you should also pay attention to the temperature that the plastic wrap can withstand when heating. Strictly follow the temperature marked on the brand or choose a plastic wrap with better heat resistance.