The current fast-paced life makes us inseparable from plastic bags.
Usually, when you buy vegetables in Yuncaichang and go to the supermarket to shop, for convenience, you will use the products provided by the merchantsPlastic bags, and regardless of whether the merchant collects the money for plastic bags separately, it still needs to be used. Or even say,Many people will also take a few home after packing, use it to pack vegetables and meat, and wrap the food in a plastic bag and stuff it directly into the refrigerator
But this looks like a very ordinary operation, it is really not advisable, this is because the quality of plastic bags is different, some are afraid of heat, some are afraid of oil, and some are afraid of oil ......If you use it wrong, it will not only be toxic and harmful, but also hurt your body!
For the vendors in the wet market, because it isSmall business, every penny has to be carefully calculated. Therefore, the use of plastic bags is often carefully calculated.
Vendors need to ensure that customers can provide free plastic bags to pick up when they buy groceries, and they also need to ensure that costs are minimized. At this time,Three-free plastic bags are the best choice.
However, when the plastic bags of these three-play products are packed with food, it has a great impact on the food. Therefore,According to GB T 21661-2020,Plastic shopping bags refer to bag products made of general plastic resin as the main raw material, or made of plastic and other materials, with a carrying structure, and used to hold and carry goods in sales, service and other places.
To put it simply, from June 1, 2008The production, sale and use of a thickness of less than 0025mm plastic shopping bag. In 2011, the National Development and Reform Commission issued the "Industrial Structure Adjustment Guidance Catalogue (2011 Edition)", which will be less than 0025mm plastic shopping bags were included in the catalogue of eliminated products and came into force on June 1, 2011.
But in fact, in order to reduce costs, some vendors often doProhibited plastic bags were used, and consumers ignore this detail when purchasing, so there are some harms.
1. Affect the health of users
This kind of plastic bag is basically used by unqualified enterprises or small workshops"Recycled plastic"Machined and simple"Three-no products".
"Recycled plastic" is, to put it bluntly, "waste plastic". Most of the "waste plastics" are made from waste plastics, industrial wastes and plastic waste discarded by medical institutions without disinfection, which is very likely to contain various viruses, bacteria and carcinogens.
And small workshops will also be added in the production process"Plasticizer", "talcum powder", "dyeing agent".and other chemical additives, so that the production of the basics"Toxic plastic".
Once this kind"Toxic plastic".Food that comes into direct contact with "heat" or "grease" will cause the toxins in the bag to be released more quickly and more. As a result, it is absorbed by food and affects the health of the human body.
2. The impact on the environment is very large
The ultra-thin plastic bag has low strength and durability, and is easy to break into small plastic fragments after being used and discardedScattered in a large area, which is not conducive to unified collection, processing and reuse.
But this plastic bag is extremely difficult to decompose once it enters the landfill, andIt will release toxic substances and affect the environment.
If this ultra-thin plastic bag is incinerate, it will also produce a large amount of toxic gas during the incineration process, polluting the air. Late stageIt can also contaminate groundwater and soil.
Therefore, in daily life, it is important not to use ultra-thin plastic bags in this way.
1. Use plastic bags to pack cooked food
If yesWhen buying cooked food, be sure not to use colored plastic bagsBecause most of these plastic bags are reprocessed from waste plastic products, they cannot be directly loaded with food.
Like the plastic bags on the early stalls, you must pay attention when using them, after all, most of them are unqualified.
For delicatessen,PE material is a relatively better choice, which is a special bag for cooked food commonly used in supermarkets.
2. Put a plastic bag on the bowl
It can often be seen at various food stalls and small stallsPut a plastic bag on the bowl, said to be clean.
Secondly, this is the merchant who does not need to wash the dishes in order to save trouble. It's just that customers feel that each person is using a new plastic bag, which looks cleanIn essence, it is more polluting and more harmful to the body.
Because, this kind of plastic bag, many are substandard products, after encountering relatively high oily or heated food, the internal toxic substances are released faster and more, at this time after the food is eaten, it has a certain impact on health.
3. Use plastic bags to keep fruits and vegetables fresh
Keep the food in the refrigerator for better preservationIt is recommended to use plastic wrapI believe everyone knows this basic operation.
However, some people usually like to save outside to get back the plastic bag and thenUse ordinary plastic bags instead of plastic wrap to refrigerate and freeze food in the refrigerator.
In this way, it will cause the food to be contaminated and unhealthy, because the special process and raw materials of plastic wrap have good breathability and fresh-keeping performance, and ordinary plastic bags cannot achieve the preservation effect at all.
4. Put the food in the microwave
Originally, using ordinary plastic bags to pack food was the wrong way, but sometimes the environment is limited, and there is no way to use it.
At the same time, many people need to reheat the food when they want it because it gets cold after they have finished buying it.
In this case, the will will be usedPlace the food in the microwave with the plastic bag。But this is wrong, because most of the ordinary plastic bags are polyvinyl chloride, which contain some plasticizers, which are easy to volatilize during the heating process and affect health.
For microwave food, it is best to use a container, or at worst, a beltA container for microwave ovens, so as to ensure the health of the food.
5. Seafood in black plastic bags
When you go to the vegetable market to buy seafood, the merchants will provide black thickened plastic bags, so as to ensure that the plastic bags will not be punctured and leaked by the seafood.
However, in the vegetable marketMost of the black plastic bags are processed with poor quality waste plastics such as waste packaging films and packaging bags, and a large number of dark pigments are added to cover them, and the colorants contain toxic substances.
If you put seafood in this black bag with toxic substances for a long time, the body of the seafood will inhale toxic substances, which will affect your health.
Compared with the vegetable market, small stalls, and food stalls, the plastic bags provided by supermarkets are different. Especially for large supermarkets, the plastic bags provided,Most of the materials are PE, there is no problem with loading some daily necessities at room temperature.
But it doesn't mean that this PE plastic bag is the most complete and can be used at will.
1. Food-grade PE plastic bags can be used to hold food
PE material is a very broad concept, according to the requirements of different use scenarios, different components will be added to the production process. Therefore, there is a big gap in terms of residual substances, temperature resistance, strength, hardness, etc.
Therefore, it cannot be said that it is used to hold food as long as it is made of PE material, and it isAccording to different foods, choose different PE material plastic bags.
Like ordinary food with outer packaging, there is no problem with using PE plastic bags, and it is very healthy to use.
But likeFor fresh food, it is necessary to use "food grade" PE material fresh-keeping bagsso that it can be used healthily.
2. PE plastic bags, not suitable for hot food and meat
PE plastic bags are said to be much healthier than plastic bags outside, but they also have defects, not that they can be used casually. It is necessary to use it more accurately, so as to ensure health.
If it is after the food has been heatedThe temperature is over 80, then you can't use PE plastic bags directly, because it will melt and decompose. At this time, it is recommended to wait for the temperature of the food to drop before bagging it or wrap it in special food wrapping paper first, and then put it in a PE plastic bag.
If you want to use PE plastic bags to buy oil in the supermarket, then the contact time should not be too long, and you should take it out quickly after arriving at home and use a separate container to take it out. So saidProlonged exposure to grease will produce a chemical reaction that will give the grease a hala smell.