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Some important things when using a microwave oven

Some important things when using a microwave oven

by phuong.seo
Some important things when using a microwave oven

I. Microwaves destroy nutrients in food

1. Microwave working mechanism

Microwave working mechanism

Microwaves are a type of electromagnetic wave that can travel through space at the speed of light. Inside the microwave, there is a component called a magnetron that converts electricity into shortwave energy. Microwaves vibrate the water molecules in food, thereby releasing heat quickly. A microwave can cook food faster than a conventional oven because it heats both the inside and outside of the food at the same time. So, the main function of a microwave oven is still heating and reheating food.

The main function of a microwave oven is to reheat and defrost food.

It is worth noting that almost all methods of heating food, including cooking, can destroy or reduce the nutritional value of food. Each method alters the flavor and nutrients in a different way.

2. Do Microwaves lose nutritional value in food?

The answer is yes, but less than other processing methods such as boiling, cooking, frying, stir-frying, grilling… Many people think that processing food or reheating food with a microwave oven will make it worse. change food, lose nutrients in food, harmful to health. However, there is no evidence that cooking or heating food in a microwave is harmful to health.

Microwaves emit microwaves, causing water molecules and some other molecules to vibrate, rubbing against each other to generate heat. Minerals such as iron, zinc, potassium … in the food are not affected when the food is heated by the microwave. Some vitamins, especially vitamins B and C, are sensitive to temperature and are partially destroyed when heated in a microwave oven.

However, the food heated by the microwave will heat up very quickly, the processing time is short, so the vitamins are usually less destroyed than other cooking methods. Moreover, minerals and water-soluble vitamins (such as vitamin C, vitamins of group B…) will be partially dissolved when boiled, which will lose more nutrients. The way to retain a lot of nutrients in food is to heat it up quickly, with a short processing time, and limit the amount of water in the food. Microwaves meet these standards.

Read more: Answers to questions about using a microwave oven

II. 7 golden rules to keep in mind when using a microwave oven

1. The cooking time (reheating) of the food should not be too long

The cooking time (reheating) of the food should not be too long

If food is heated or reheated in the microwave for more than 2 hours, it is best to throw it away. Because when heating for too long can cause food to decompose, burn and become toxic, harmful to the body.

Normally, warming up a bowl of soup usually takes 3-7 minutes. So there is no reason that you have to reheat food for so long.

2. Do not use plastic containers in the microwave

Plastic if used in the microwave will be deformed, not to mention in the process, the melted plastic will stick to the food, causing harm to your body.

3. Do not put metal objects in the microwave

Metal objects such as cups, plates, spoons, when placed in the microwave oven, can emit sparks that are reflected back and forth inside the oven, which can cause fire and explosion.

4. Fish meat that has been defrosted in the microwave should not be put in the refrigerator

Microwaves only use low heat to defrost the outer layer of food. At this time, bacteria also begin to appear.

Even if you put food in the refrigerator, it will only halt the growth of bacteria, not kill it. The best way after defrosting is to prepare food immediately.

5. Do not use lids to heat liquid foods such as soup, milk

During the heating process, the liquid heats up, so the internal pressure also heats up, if using lids, they may crack. Even when heating canned foods, be sure to poke a hole in the can to prevent food splashes from contaminating the oven.

6. Avoid using plastic bags for food packaging

Avoid using plastic bags for food packaging

The best way is to put food in a bowl and then use plastic to cover the outside, not to let the plastic bag cling directly to the food. By doing so, you will keep the steam sealed and the food will be heated evenly.

7. Do not roast or fry food in the microwave

During the process of rotating, frying at high temperatures, grease is easily splashed around the oven, which can cause a fire. If the inside of the microwave is on fire, you must not open the door right away, but first, unplug it before opening the door.

8. Do not roast or fry food in the microwave

During the process of rotating, frying at high temperatures, grease is easily splashed around the oven, which can cause a fire. If the inside of the microwave is on fire, you must not open the door right away, but first, unplug it before opening the door.

III. Things you should know when using a microwave

1. Warm-up paper coffee cups

Warm-up paper coffee cups

Although made to hold hot drinks, paper coffee cups cannot withstand the heat of a microwave oven. Extreme heat can cause the glue to melt, causing the glass to leak water. If heated long enough, the paper cups can even catch fire.

Instead of reheating it directly, you should pour the coffee into a microwave-safe glass or ceramic cup. It’s best to drink all the coffee, so there’s no need to reheat it!

2. Don’t watch the food

You should not stand near the microwave, but if you leave it for too long, there may be problems such as burnt food, exploding popcorn, broken glass containers … because you have too high a temperature. You need to always keep an eye on the food in the microwave so that you can promptly handle it in the worst possible situation.

To feel more secure, you should only leave it for a short time depending on the purpose of use. In addition, you should also avoid heating some of the following foods in the microwave because they are harmful to health: mushrooms, celery, fruits, fried foods, sauces and breast milk.

3. Make use of recycled paper plates

Recycled paper plates and paper towels are considered unsafe to microwave. Many recycled products, including waxed paper, may contain small pieces of metal that can spark when microwaved. You should put the food on a ceramic plate or glass container to warm it, it will be safer!

4. Do not stir the food well

Microwaves warm water molecules unevenly so food heats up quickly, but they’re only about 70-80%. This means that your food is usually hot on the outside and cold in the middle. Foods with high water content like vegetables will heat faster than other foods like meat, fish, etc.

Food that is not evenly heated is not only difficult to eat but can also have adverse health effects because the cold part allows harmful bacteria to survive. Therefore, you should stir or stir the food and then heat it a little more to heat it up.

5. Take out food too fast

Take out food too fast

Have you ever been so hungry that you couldn’t wait more than 2 minutes when reheating food? I know hunger can make you impatient, but this is a mistake that can damage your digestive system!

You need to wait for the right time to take out the food. Microwaves are designed to make water, sugar and fat molecules vibrate up to 2.5 million times per second to generate heat. The molecules continue to move and produce heat even after stopping the microwave.

Therefore, the waiting time will allow these molecules to slowly stop and end the cooking process. Make sure you always read the instructions and pay attention to the reheating or defrosting times for each food to ensure proper cooking.

6. Always on the high power button

Not all foods can be turned on by the high power button. According to the United States Department of Agriculture (USDA), while foods with a high water content like vegetables reheat quickly, solid foods like meats and cheese can be cooked or heated unevenly.

Therefore, it is recommended that you cook or defrost solid foods, such as large pieces of meat, on medium power (about 50% of the total weight) for a longer period of time. This helps defrost or reheat the inside of the food without overcooking the outside.

7. No gloves

When the microwave signal is done, do you open the door and take the food out with your hand? Food containers are very hot, even steam can cause burns! In particular, children are very susceptible to burns when curiously opening the microwave. A recent study (surveyed between 2002 and 2012) found that nearly 11,000 children aged 1–4 years were treated in the emergency department for microwave-induced burns.

Therefore, you should prepare a pair of gloves right in the microwave and carefully wait a few seconds for the heat to evaporate before taking out the food. In addition, you should place the microwave oven in a high position so that children cannot reach it. In case of burns, you need to quickly perform first aid to avoid further burns.

8. Not cooking food long enough

Even if you don’t cook food in the microwave, you need to make sure your food is thoroughly heated to a safe temperature. This is especially important when cooking fresh eggs or fish and meat but also applies to all foods you are reheating. The World Health Organization (WHO) recommends heating all foods to at least 70°C.

If you feel the food is still cold, quickly heat it up a little more. Please note the time is enough for each food if you do not want your digestive system to have problems because the food is cold.

9. Boil liquid at too high temperature

Although rare, superheated liquids can boil violently in the microwave. This happens when water or other liquid (soup, soup, etc.) is heated above the boiling point of 100°C. The liquid will have a flat surface at first, then it will squirt or explode when you take it out. This is very dangerous because you run the risk of serious burns if you don’t avoid them in time.

If it is necessary to heat the liquid, you should note the following:

  • Avoid boiling water for too long compared to the amount of water to boil.
  • Choose a high-walled container (like a glass or mug)
  • Touch the outer wall of the container with another object several times to reduce the temperature of the liquid being heated.
  • Use long tongs or tongs to keep them away from the container (in case the liquid explodes into a scalding vapor).
  • Always keep your face away when removing boiling water from the oven.

10. Splashing food in the microwave

Splashing food in the microwave

Does your microwave spill food and even smell? That’s because you didn’t spread paper towels or napkins underneath! You can turn a bowl or plate upside down to both retain heat and maintain a more uniform cooking speed.

If the microwave is too dirty, you should clean it with the following simple ways to avoid becoming one of the most dangerous “diseases” in your home:

  • Fresh lemon: You cut half a lemon and place it face down on the plate, add a little water, then put it in the microwave for 1-2 minutes. When the lemon heats up, steam will appear in the oven, which has the effect of deodorizing and softening stains. You just need to use paper or a rag to clean the inside of the oven and then wash the turntable and the microwave will be completely clean.
  • White vinegar: You take half a bowl of water, add a tablespoon of white vinegar to the bowl and put it in the microwave. Turn on the oven for 5 minutes, if your microwave has high power, adjust the time to 2-3 minutes. Just like lemon, when the white vinegar solution evaporates, it will loosen stubborn stains in the oven. Wait for the set time to expire, turn off the oven, take out the bowl of vinegar and then use a rag to clean the inside of the oven cavity. Remember to remove the turntable and wash it as you would a normal dish wash.
  • Dishwashing liquid: You pour warm water into a bowl and then add dishwashing liquid, place the bowl in the microwave for about 1 minute, the steam will dilute the stains to help you easily clean the inside of the microwave. wave. You can add a few tablespoons of baking soda to a bowl of dishwashing liquid to eliminate food odors in the oven cavity.
  • Glass cleaner: You mix glass cleaner and water in a ratio of 2:1, use a sponge to soak up the cleaning solution and then scrub the inside of the oven. You should remove the turntable to clean, wipe the base of the turntable, thoroughly clean the oven vents to clean accumulated stains. Carefully clean all 4 sides of the oven wall as food often gets splashed and stuck to the top of the oven wall. After cleaning the inside of the oven, you should wipe it again with clean water. Be careful to wipe thoroughly so that there is no residual chemical from the glass cleaner solution. Use a dry rag to wipe it again.

Read more: How to use and cook food with the microwave?

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