It depends. Healthy application method of the preservative film. Warm reminder: Most of the cooked food in the supermarket is wrapped with a layer of preservative film, and many consumers think it is a protective film and directly put the food in the refrigerator when going back home. In fact, its preservative film should be torn off before storing. When consumers go back home, they should tear off the preservative film, wrap the food with freshness protection package and then put the food into the refrigerator; they can also store food in the covered ceramic containers; if the container have no cover, when cover it with preservative film, try not to put into too much food to prevent the food from contacting with the preservative film. Finally, I want to remind you that when the food is hot, do not cover it with plastic wrap, because that will increase the loss of vitamins in food. It is best to wait until the food is cooled completely before using the preservative film.
We can often see some cooked food or cut fruits in the supermarket wrapped with preservative film. So many people think it is a protective film, and that it is ok to put them into the refrigerator directly when going back home. In fact, the right approach is to tear off the preservative film first befor storage. In order to increase its adhesion, the plastic wrap contains the plasticizer called ethylhexyl ammonia. The plasticizer will cause much damage to the human endocrine system and upset the body's metabolism. Therefore, when storing food, you should first remove the plastic wrap, and don't use any plastic wrap for the hot food. At present, there are three main raw materials for the production of food wrap, namely polyethylene (PE for short), polyvinyl chloride (PVC) and polyvinylidene chloride (PVDC). Most of the plastic wrap on the market use polyethylene as raw material. For it contains no add plasticizers in the production process, it is recognized as the most secure plastic wrap.
