Introduction: In our daily life, if the fried dishes are not finished, will cover with plastic wrap and put them in the refrigerator to store; in addition to keeping fresh food, if the fruit is not finished, it will also be wrapped in plastic wrap and put into the refrigerator.
In our daily life, plastic wrap can be said to be an indispensable daily necessity, , but not long ago, some people on the Internet claimed that , "Morning wrap can cause cancer", "Improper use of plastic wrap can cause cancer ", etc., so are these statements true or false? Today I will take you to learn about this topic.
1
What material is plastic wrap? Does it really have a freshness effect?
Milk film is a very common daily necessities in our daily lives. Milk film appears in almost every family, but do you know what plastic wrap is used for? The raw materials for the production of
plastic wrap can be divided into three main types, are polyvinyl chloride (PVC), polyethylene (PE), and polyvinylidene chloride (PVDC).
In our family, the most common plastic wrap is made of two raw materials: polyvinyl chloride and polyethylene. Plastic wrap made of polyvinyl chloride is very rare. is because its cost is relatively high and the process is very complicated.
As the name suggests, plastic wrap is an item that can bring freshness. When wrapping food, its special material can bring a very good sealing effect , which can prevent the moisture of the food from being emitted outward.
In addition to preventing the dispersion of water in food , plastic wrap can also lock the taste of food when wrapping food.
In addition, plastic wrap can also isolate part of the air to a certain extent, and preserve the temperature of the food , which can effectively prevent food from oxidation and can also help reduce the possibility of food spoilage.
2
Long-term use of plastic wrap is harmful to the body and carcinogenic? The reason why
carcinogenic is that the plastic wrap contains a certain plasticizer .
We mentioned in the above content that the plastic wrap sold on the market today is generally divided into three types of , namely polyvinyl chloride (PVC, used in food), polyethylene (PE, used in fruits and vegetables, meat), and polyvinylidene chloride (PVDC, cooked meat). According to the content of its growth agent, it is PVC>PVDC>PE.
. The plastic wrap is selected from PE material and PVDC. because the plasticizer content of these two plastic wraps is the least.
is even the most abundant PVC plastic wrap , and the content of plasticizers contained in is very small.
And as time goes by, the growth rate will be precipitated, so as long as you purchase plastic wrap produced by regular merchants, you don’t have to worry about health problems. Plastic wrap such as will not damage the body or cause cancer.
3
Is there really no health risks when using plastic wrap? This is not the case.
According to the content of my country's "National Food Safety Standards for Plastic Materials and Products for Food Contact", the total migration amount of using plastic wrap cannot be greater than 10mg/dm. If exceeds this value, it is likely to cause harm to physical health. The smaller the detection rate of migration amount, the higher the security of will be.
. Jiangsu Product Quality Supervision and Inspection Institute once conducted a study on this issue. The researchers selected 10 different plastic wraps including PE, PVC, PVDC materials, and the styles are extraction type, roller shutter type, and zipper type.
Then, when is exposed to vinegar, water, oil, wine and other substances during use, will detect the total migration amount.
and 10 different plastic wraps, after contacting acidic foods and alcohol foods with ethanol content less than 20%, the total migration amount of meets my country's standards.
However, there are two PVC plastic wraps. After contacting the simulated substances of oils, the total migration amount of is greater than 20mg/dm.
And here I would like to remind everyone that when we When you use PVC plastic wrap in your daily life, you must avoid contact with alcohol-based oil-based foods.
These plasticizers will easily dissolve in alcohol and fat. After comes into contact with these foods, it will easily bring corresponding risks to your health.
So how should we use plastic wrap reasonably in our daily life?
4
When using plastic wrap, you need to listen to
Choose plastic wrap with PE and QS logo
When you buy plastic wrap, you must choose PE and QS logos. After all, this is used to preserve food. Don’t choose those three-no products for cheapness.
Select the appropriate plastic wrap according to the situation
The heat resistance and purpose of plastic wrap of different materials have certain differences. If it is eaten, it is recommended that you must watch it carefully when purchasing. Check the instruction manual to see which one is suitable for consumption.
and other foods are cold and then use plastic wrap
It is recommended that when storing food, you must wait until the food is cold before using plastic wrap, because the food key suddenly enters the refrigerator, and the heat contained in the food will evaporate in a short time, will easily cause mold to appear in the refrigerator, contaminating the entire freshness layer.
, especially vegetable , will easily cause the vitamins in vegetables to be lost. It is better not to keep them fresh than to do this.
Different plastic wrap can be burned
You can also distinguish it by burning with . The reactions caused by burning plastic wrap from different materials also have certain differences.
If the plastic wrap is made of PVC material, there will be a pungent smell when it is burned, and it will also present a black flame, emitting a thick black smoke.
. If it is made of PE, it will have no smell after burning, and it will generally be a yellow flame. does not have too much smoke. It can continue to burn after leaving the fire source.
5
In addition to fresh food, plastic wrap has some other wonderful uses. How many do you know?
- For some more important paper materials, you can use plastic wrap to wrap it, which can prevent the paper materials from turning yellow;
- can also use plastic wrap to protect the keyboard and remote control, which can reduce dust intrusion;
- 1 tear off the appropriate size and put the plastic wrap under the bathroom floor mat, which can bring an anti-slip effect.
Conclusion: I believe that after reading this article, you may have learned about the PVC plastic wrap contained in plastic wrap. It is rare nowadays, and people rarely buy it in supermarkets. Therefore, you must pay more attention when purchasing and do not buy plastic wrap that cannot be used for consumption.
