Cover with cling film and you can lock the deliciousness. Nowadays, people are becoming more and more dependent on cling film. Vegetables, fruits, leftovers and leftovers, as long as they are covered, they will feel more at ease. But recently, a study in the United States pointed out that not all foods are suitable for using cling film.
Waterier fruits and vegetables
For example, apples, pears, tomatoes, rape, chives, etc. can not only keep fresh for a long time, but also increase some of them.
Reason: Experiments show that 100 grams of leeks coated with cling film after 24 hours have 1.33 mg more vitamin C content than when not wrapped, and 1.92 mg more in rapeseed and lettuce leaves.
However, the experimental results of some vegetables are quite different. After 100 grams of cling-wrapped radish were stored for one day, the vitamin C content was reduced by 3.4 mg, and the beans were reduced by 3.8 mg. After a day and night of cucumber storage, the vitamin C loss was equivalent to 5 Apples.
Cooked foods, hot foods, and oily foods: especially meat, do not store in plastic wrap.
Reason: It is pointed out that after these foods come into contact with the cling film, it is easy to volatilize the chemical components contained in their materials and dissolve in the food, which is not good for health. Most of the plastic wraps currently on the market, like commonly used plastic bags, are made from ethylene masterbatches. Some cling film materials are polyethylene (PE for short). This material does not contain plasticizers and is relatively safe to use. Some materials are polyvinyl chloride (PVC). This material is often added with stabilizers and lubricants. Raw materials such as auxiliary processing agents are harmful to human body. Therefore, you must be careful in your choice.
Steamed buns are more suitable for fresh-keeping bags, but do n’t seal them—
There are many food packaging products on the market, such as plastic wrap, plastic bags, plastic containers, etc. It states: "Fresh preservation is mainly 'water retention', 'quality preservation' and 'protective nutrition'. In this regard, the cling film is good. Qualified cling films are highly breathable, and oxygen can be exchanged inside and outside. Food can be fresh for a certain period of time. "But for food such as steamed buns, it is obviously inconvenient to use plastic wrap. In comparison, the plastic wrap is thicker, the air permeability is not very good, and it is relatively suitable, but try not to Seal your mouth. The main role of the fresh-keeping box is sealing, which can effectively isolate raw and cooked foods and increase the utilization of refrigerator space.