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Usage of microwave oven precautions in using microwave oven
The microwave oven uses the 2.45 billion ultra-high frequency microwaves generated by the magnetron as the heart of the whole machine to rapidly vibrate the molecules such as protein, fat, sugar and water in food, so that the molecules collide, squeeze and rub each other and rearrange. In short, cooking is based on the internal friction and heating principle of food itself.
Microwave will be reflected back when it touches metal, so the inner wall is made of specially treated steel plate. According to the reflection caused by the inner wall of the microwave oven, the microwave can penetrate the food back and forth to enhance the thermal efficiency. However, metal containers such as iron, aluminum and stainless steel shall not be used in the furnace, otherwise it will affect the heating time and even cause a fire in the furnace.
In addition, bottled food with closed containers and narrow bottlenecks should not be used in microwave ovens. At the same time, avoid using ordinary plastic containers: first, hot food will deform plastic containers, and second, ordinary plastics will release toxic substances, pollute food and endanger human health. Microwave can penetrate ordinary ceramics and glass, so it can be used. It is best to put the food container in a special tray for microwave oven. Please use a wide-mouth container when heating liquid in the microwave oven.
Matters needing attention in the use of microwave oven
1. When using the microwave oven, people should not lean in front of the microwave oven or stay near it all the time. It is best to stand one meter away from the microwave oven to avoid electromagnetic radiation.
2. When heating liquid food, you should use a wide-mouth container or no cover for heating. If heated in a closed container, the hot air generated by food cannot be released, and it is easy to burst if the pressure is too high.
3, can't use ordinary plastic containers to heat food. Plastic things are easy to soften and deform when heated, and also produce some toxic gases, which affect food and people's health.
If the food is heated for a long time, you must not eat it again. Due to excessive heating, food may mutate or lose its nutrients, and some even produce some new substances harmful to health. Therefore, if the heating time exceeds 2 hours, it is recommended to throw away the food to avoid food poisoning.
Remember not to microwave for the second time after some meat or other food heated in the microwave oven is frozen. Because bacteria will grow in half-cooked food, it is impossible to kill all bacteria if they are heated in a microwave oven for the second time because of the short time.
6. Don't put the microwave oven in the bedroom or living room. The best place is the kitchen. If you put a bedroom, the bedroom is a place to rest and avoid electromagnetic radiation. There are air conditioners, televisions and other electrical appliances in the living room. If they are put together, they will easily interfere with each other. So the kitchen is the best.
7. Don't cover the radiator grille on the microwave oven with anything, or the hot air generated when heating food will not be distributed.
8. Don't choose fried food when heating food in microwave oven, because oil will splash at high temperature, leading to open flame.
Note: Do not open the door of the microwave oven immediately if an accident causes a fire in the furnace. Turn off the power first, and then open the door to cool down after the fire is extinguished.
9. Don't use metal containers to heat food, because when the microwave oven is heated, it will generate electric sparks with the metal containers and reflect microwaves, which will not only damage the furnace body but also cook undercooked food.
10, don't heat food with shells like eggs. When cooking food with shells, it is also necessary to pierce the shell membrane with needles or chopsticks in advance to avoid bursting and splashing after heating to pollute the furnace wall.
1 1. Don't let the plastic wrap stick to the food when heating it in the microwave oven. Many people may make this mistake. Put a protective film on it in the future to make the food cleaner and healthier. You can put food at the bottom of the container and seal the bowl with plastic wrap, which can also seal the water vapor and make the heating fast and even. Before taking out the food, you can pierce the plastic wrap to prevent it from sticking to the food.
12. Please don't start the microwave oven before the food is put into the microwave oven, so as not to damage the magnetron during no-load operation.
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