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Mouldy foil is not to be used. Because he was already covered in bacteria. After using it, it will cause great harm to people's bodies or get seriously ill. Therefore, moldy tin foil should not be used. It can only be thrown away and buried.
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Tin foil is not moldy, mold is polluted, unclean or caused by bad environment; As for the consequences of using moldy tin foil, it depends on where it is used, and it is definitely unhygienic if the food is packed.
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There is a lot of mold that is very regular.
Tinfoil. Gray or black means that it has been oxidized, generally because the tin foil is not well preserved, long-term exposure to the air is caused, at this time there will be harmful substances attached to the food, eating is not good for the body. Most of the current tin foil is aluminum foil.
Alumina is formed when the foil reacts with oxygen in the air, and the foil changes color. Under normal circumstances, alumina is not too harmful to the human body, but it is recommended to throw away discolored food tin foil directly.
Pay attention to things. Do not touch the open flame directly, do not put it in the microwave oven to heat easily, and only follow the instructions when the microwave oven is in the oven function. At the same time, it is also necessary to avoid food and seasonings wrapped in tin foil containing excessive acidic substances and prolonged contact with tin foil to avoid the dissolution of harmful substances.
Many of the tin foil sold on the market today is aluminum foil, which is made of plastic or special paint on both sides of the paper, and the middle layer is aluminum. If it is only used as packaged food, it is okay, but if it is wrapped in food and directly roasted, the harm to the human body is direct. Wrap it in tin foil and bake it, whether it can isolate carcinogens?
has not yet been confirmed. However, regardless of whether it has the effect of separating carcinogens, tin foil is easy to cause heavy metal pollution.
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The appearance of mold on the food-grade aluminum film paper is because the aluminum film paper is stained with food, dust, oil and other stains, and mold will breed when the storage humidity is appropriate. However, if you pack something non-food, you can consider washing it before using it.
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Yes.
Tin foil and aluminum foil.
The heat transfer function is very strong. Once heated, it will be transferred to the inside of the food. Unless the temperature of the food also reaches the melting point of the tin foil, the tin foil will be intact.
Actually, it's aluminum foil. If the color becomes darker, it will oxidize after prolonged exposure to the air. Under normal conditions, alumina.
Minimal harm to the human body (unless consumed in excess).
In general, the manufacturer will provide the warranty period on the side, but it doesn't matter if the warranty period ends because it's harmless. The chemical properties of tin itself.
It is not active, so there is little chance of causing damage.
Uses:
Aluminum foil is widely used, such as: airline food packaging, ordinary meat packaging, cigarette roll packaging, etc. According to the different characteristics of its application, it is divided into more than 20 varieties.
Due to the difference in the level of economic development in different countries, there is also a big gap in the consumption structure of aluminum foil.
In developed countries in Europe and the United States.
Aluminum foil products used for packaging account for 70% of the total demand. In the Chinese market, aluminum foil is mainly used as a raw and auxiliary material for industrial manufacturing, and packaging aluminum foil only accounts for 30% of the total domestic demand. Although the development of aluminum foil packaging is relatively late, the market is growing rapidly, and the prospect is attracting attention.
Aluminum foil is quite significant in construction applications, and the pasting on the surface of the insulation material makes it more convenient and clean during construction, and especially the aesthetics have reached a new level. But the effect of different types of aluminum foil paper is very different, such as fireproof and ordinary are not the same grade.
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Tin foil is metal, so I guess it doesn't have an expiration date. As long as there is no damage, it can still be used.
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Tinfoil. Generally, it will oxidize in 6-12 months, and sealed storage can delay the oxidation time.
After the tin foil is left for a long time, the phenomenon of discoloration will occur, some tin foil will turn gray, and some tin foil will turn black, once it becomes black, it can not be used anymore, which is due to the oxidation of tin foil. Tin foil is gray, if the situation is not very serious, you can still use it, but if the discoloration is more serious, you can not use it.
Tin foil is mainly used for barbecue, but also to put some food, tin foil is toxic to the human body itself, can not be used for a long time, if used too much, there will be carcinogens, stomach cancer.
The risk of bowel cancer, so the discolored tin foil should be thrown away, and it is not advisable to continue to use it.
Tin foil uses:
1. Wrap baked food.
The two-sided nature and heat absorption of tin foil make it a great tool for wrapping food for cooking. Some foods that are not easy to cook, such as pork ribs and potatoes, are wrapped in tin foil and put in the oven, so that the photosensitive surface of the tin foil can absorb the heat in the oven and evenly distribute it on the surface of the food, which can shorten the cooking time of the food.
For example, it can be used when baking bread most often to prevent the bread from burning, and when cooking tin-coated cod, wrap it in tin foil to gather heat and shorten the cooking time, while also preserving this temperature.
2. Make a baking tray mat.
If you bake meat in the oven at home, you can put a layer of tin foil on the baking sheet, and the soup will be separated by the tin foil and will not penetrate into the dinner plate or baking sheet, which is conducive to the cleaning of the container. I also like to use tin foil for baking snacks, which are not sticky, and the bottom of the baked snacks is very well colored.
3. Keep food warm.
The tin foil gloss-sensitive surface has good heat absorption properties, while the matte surface has a good thermal insulation effect. It is inevitable that there will be guests arriving late for family banquets, and it is necessary to use spare tin foil at this time. When the meal is finished and the guests have not arrived in time, you can wrap the plate with tin foil, which can have a good effect on the food.
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OK. Kitchen tin foil is actually aluminum foil, and the color is darkened only by being oxidized by prolonged exposure to the air. Under normal circumstances, alumina is very harmful to the human body (unless it is consumed in excess), so there is no need to worry.
How to use tin foil for grilling:
If you look closely at the foil, you can see that the two sides of it are not the same. One side is very shiny, and the other side is darker. The bright side is called the photosensitive surface, and the darker side is called the matte surface, and when we use it, we should use the matte surface to contact the food, and the photosensitive surface is exposed outside.
If you accidentally use it in reverse, the photosensitive surface may come into contact with the food, which may cause the food to stick to the tin foil.
Tin foil barbecue is to wrap processed food and materials in tin foil and put them in an electric oven or fire to bake. Tin foil barbecue prevents food from sticking to the baking sheet, the second is to prevent the food from sticking to dirty things, the third is to facilitate brushing the baking sheet, the fourth is to have seasonings when some food is baked, and the filling is wrapped in tin foil for fear of falling apart, and the fifth is to prevent moisture loss and keep it fresh and tender.
Using the advantages of tin foil barbecue, combined with its own unique barbecue technology and recipe, the food that needs to be grilled is marinated in advance, or added to the secret seasoning, and mastered the precise heat, so that the roasted mature food is fragrant at the moment of breaking the tin foil, the meat juice is fresh and tender, whether it is seafood, meat, fish, or vegetables are kept in the original flavor, the color is gorgeous, the soup is fragrant, and it is truly nutritious, healthy, green and delicious!
Resources. Brand subnet.
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There is no harm in this slag, because the chemical properties of tin itself are not active, so the harm may be very small.
The role of tin foil:
1. Aluminum foil is usually used for the loading of food, and can be used to wrap beans and prepare sprouts, potatoes, sweet potatoes, etc. for barbecue when barbecing, so as not to burn the food.
2. Sometimes it is used for decoration. Modern aluminum foil is made of aluminum, which can also be used as an aluminum electrode for electrolysis.
3. A hairstylist uses aluminum foil to perm the hair of guests.
4. Aluminum foil can also absorb the oil in the soup.
5. Aluminum foil is also widely used in isolation layer, heat exchange, and imitation tung eggplant as a conductor.
Usually, the thickness of aluminum foil used in beverage packaging and food packaging bags is only microns. This thin layer of aluminium is waterproof, retains umami, and is anti-bacterial and stain-resistant. It is very common to use aluminium foil paper trays for food use, although aluminium foil trays are disposable, but the composition is aluminium, which is less harmful to nature.
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Tin foil is a material that is often used to wrap food or ingredients in the oven. If you notice that your foil is blackened, you may be worried about whether it will still work. Basically, if your tin foil is blackened, it is a sign that its surface has suffered some thermal loss or reacted with certain chemicals in the food.
First of all, we need to determine whether the foil is blackened because it is overheated or because it is affected by the chemicals in the food. In both cases, if the black color on the foil is confined to the surface only, it can usually still be used. However, if the black has penetrated the bottom or inside of the foil, then it is no longer safe to use.
Secondly, if the surface of the foil is brown or thin, or there are signs of holes or tears, then it is best not to use it again. In these cases, the chemicals in the foil may leach into the food.
The best practice is to choose a thicker foil when buying ingredients and not overheat the surface of the foil or expose it to food for long periods of time when using it. If you notice that the surface or bottom of the tin foil has started to discolor or thin, it is best not to use it anymore, which is also a way to ensure food safety.
In short, if the black color of the surface of the foil is only limited to the surface, then it can still be used. However, if the black color has penetrated into the inside of the foil, or if the surface of the foil has become brown or thin, it is best not to use it again. Also, when using tin foil, be careful not to overheat the surface of the foil or expose it to food for a long time.
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