Can I use tin foil in the microwave oven?
The heating time in the microwave oven is short and the thermal efficiency is high. Do not put the sealed containers containing food, bottled food and eggs in the microwave oven to avoid explosion due to thermal expansion. If heating is needed, the container lid and bottle cap should be opened, but the eggs should not be heated.
You can't put food in a metal container in the microwave oven. Because microwaves can't penetrate metal utensils and food can't be heated, a large number of reflected microwaves will damage the magnetron. For some foods packed with metal foil paper, it is necessary to unpack them first and then heat them in the microwave oven.
Introduction of microwave oven principle
Microwave oven is a cooking appliance that uses food to absorb microwave energy in microwave field and heat itself. The microwave generated by the microwave generator in the microwave oven establishes a microwave electric field in the cavity of the microwave oven, and certain measures are taken to make the microwave electric field distributed as evenly as possible in the cavity of the microwave oven. Food is put into this microwave electric field, and the cooking time and microwave electric field intensity are controlled by the control center to carry out various cooking processes.
Generally speaking, microwave is a kind of high-frequency electromagnetic wave, which does not generate heat itself. There are microwaves everywhere in the universe and nature, but there are microwaves in nature. Because they are scattered and not concentrated, it is impossible to heat food. Microwave ovens use their internal magnetrons to convert electric energy into microwaves, which penetrate food at an oscillation frequency of 2450MHz. When microwave is absorbed by food, polar molecules in food (such as water, fat, protein, sugar, etc. ) is attracted to oscillate rapidly at a speed of 2.45 billion times per second. The macroscopic manifestation of this oscillation is that food is heated.
Taboos for using microwave ovens
1. Avoid using ordinary plastic containers: first, hot food will deform plastic containers; second, ordinary plastics will release toxic substances, pollute food and endanger human health. Use a special microwave oven to hold food and put it in the microwave oven for heating.
2. Avoid using metal utensils: As the utensils such as iron, aluminum, stainless steel and enamel are put into the furnace, electric sparks will be generated when the microwave oven is heated, which will not only damage the furnace body, but also heat uncooked food.
3. Avoid using closed containers: use wide-mouth containers when heating liquids, because the heat generated by food heating in closed containers is not easy to dissipate, which makes the pressure in the containers too high and easily leads to blasting accidents. Even if you use shells to cook food, you should pierce the shells with needles or chopsticks in advance to avoid bursting after heating, splashing out to pollute the furnace wall or injuring people.
4. Avoid overtime heating: food is thawed or heated in the microwave oven. If you forget to take it out, throw it away after more than 2 hours to avoid food poisoning.
5. Don't heat the meat until it is half-cooked, and then put it in the microwave oven for heating: because the half-cooked food will still breed bacteria, it is impossible to kill all the bacteria when it is put in the microwave oven for the second time because the time is too short. Frozen meat must be thawed in the microwave oven before it is heated and cooked.
The above is the introduction of tin foil microwave oven. Compared with other microwave ovens, the tin foil microwave oven adds tin foil to the heating options, which makes it faster to heat things wrapped in tin foil. In Bian Xiao's view, the tin foil microwave oven can be used not only to help us heat our meals, but also as another way to cook dishes. In fact, microwave ovens have brought a lot of convenience to our lives, but we should also pay attention to many matters when using them. I hope my introduction will be helpful to readers.