Pay attention to the temperature! Bacteria are reduced and the refrigerator is also durable, what le

I've always wanted to live a life where I only eat one meal, but my wallet says to me, "Dream! ”Leftovers can be said to be very harmful to the body, and more serious ones will cause cancer, but this is not all leftovers have to be thrown away, and you can't eat the next meal, and it's very troublesome to cook again, not to mention, it's a waste of food, so some leftovers can be kept in the refrigerator, and some leftovers are resolutely not.

First, stem and leaf vegetables

Green food is good for the body, but the same is not true for leftoversGenerally, stem and leaf vegetables have the highest nitrate content, melon vegetables are slightly lower, and root and cauliflower vegetables are in the middle。If it is leftover green vegetables, it is best not to put them in the refrigerator, although the low temperature of the refrigerator can inhibit the growth of bacteria, but the characteristics of stem and leaf vegetables themselves, so that they have more carcinogens. In addition, the vitamins in leafy greens are almost completely lost after repeated heating.

Therefore, whether it is a stir-fried vegetarian dish or a cold salad, it should not be preserved. <>

Second, soy products

Soy products are rich in protein and are a good food to eatBut it is precisely because soy products contain a lot of protein that they have become the best petri dish for microbial reproductionPutting it in the refrigerator only slows it down, and the number of microorganisms is still very large, so soy products are only eaten on the same day, which are fresh, delicious, healthy and safe. <>

Third, fish and shrimp and other aquatic products

Aquatic products are very rich in nutrients, and they do not gain weight after eating nutritious, but the protein in food is particularly easy to be decomposed by microorganisms, and aquatic products are also more likely to breed harmful microorganisms. Eating seafood emphasizes the deliciousness, but the leftover seafood not only has no umami at all, but even contains carcinogens.

Don't rush to put the finished meal in the refrigerator, the refrigerator at home is mainly the effect of refrigeration, so the food can keep the original freshness in this cold air flow.

The refrigerator box is a confined space, bacteria will multiply in large numbers, resulting in the corruption of other foods, and the smell of the refrigerator will smell bad, we can buy some refrigerator deodorant at home, which is very important, it can quickly remove the taste, and it also has a certain inhibitory effect on bacteria.

Generally speaking, don't put vegetables with leaves and seafood in the refrigerator after eating, the refrigerator can only reduce the growth of bacteria, but it cannot inhibit the growth of bacteria!

As for leftovers, it is generally not recommended to put them in the refrigerator, especially green vegetables and tofu are more perishable, it will multiply bacteria in the refrigerator, and people with a bad stomach will have diarrhea if they eat it.

It is best not to put the leftovers we eat directly into the refrigerator, which will cause great damage to the refrigerator and increase the number of bacteria, so we must pay attention to it at ordinary times, so as to maintain the long-term durability of the refrigerator.

Generally, we don't put fried leftovers in the refrigerator.

Leafy vegetables are best not stored overnight. Eating it overnight can also be harmful to the human body, so it is okay not to eat overnight dishes and dispose of them.

The living conditions of modern people are good, sometimes you can go to the supermarket to buy a large cart of melons, fruits and vegetables, fish, meat, eggs and milk, etc., and the existence of the refrigerator solves everyone's "food storage" troubles, and many people will put the leftovers that cannot be eaten into the refrigerator. Some people say that leftovers can only be put in the refrigerator after cooling, which will save more electricity and prolong the life of the refrigerator, so many people will wait for the dishes to cool before putting them in the refrigerator.

Do you have to wait for the food to cool before putting it in the fridge?

After the meal is ready, the temperature is above 100 degrees Celsius, so we start from 100 degrees Celsius and go down, when the food drops to 60 degrees Celsius, the bacteria have begun to multiply quietly; When the food drops to 30 degrees Celsius, the bacteria will multiply more frantically, only when the temperature of the food drops below 5 degrees Celsius, the bacteria will enter a dormant state, so it can be seen that the lower the temperature, the less bacteria will grow in the food, and what we have to do is to minimize the time for the food to cool down.

The purpose of putting food in the refrigerator is to reduce and inhibit the growth of bacteria, so no matter what kind of food, especially in the summer, the longer it is left in the greenhouse, the more bacteria will grow. Therefore, it is recommended that the time between the preparation of the dishes and the time before putting them in the refrigerator should not exceed 2 hours, and it is best to put the remaining dishes in the refrigerator after eating.

Does hot food consume more electricity when put in the fridge?

Many people feel that putting hot dishes or hot rice directly in the refrigerator will consume more electricity and will also affect the lifespan of the refrigerator. Let's assume that the temperature of a hot dish is 60 degrees Celsius, then when it is put in the refrigerator to 5 degrees Celsius, it needs to be lowered by 55 degrees Celsius, but if the temperature of a dish is 30 degrees Celsius, it only needs to be lowered by 25 degrees Celsius when it is put in the refrigerator to drop to 5 degrees Celsius, so it seems that the latter can be more energy-efficient. But the amount of electricity consumed by the refrigerator does not depend solely on the temperature, but on the overall heat that the refrigerator wants to take away.

To give a very simple example, the gram weight of a plate of leftovers is assumed to be 1 catty, so put in a large watermelon weighing more than ten catties, who brings a small burden to the refrigerator, and who brings a heavy burden to the refrigerator, which is very obvious. As long as you don't put too much hot food in the hot meal, you won't consume much electricity.

How to solve the problem of water vapor evaporation in the refrigerator of hot dishes?

Whether it is a hot dish or a cold dish, it is best to seal it with plastic wrap after putting it in the refrigerator, which can not only avoid the problem of water vapor evaporation, but also reduce the smell and deterioration.

Most of the current iceside lifting and elimination tanks are energy-saving refrigerators, and the efficiency of refrigeration is getting higher and higher, even if hot dishes are put in the refrigerator, it will not add much burden to the refrigerator, so don't worry too much. Instead of trying to save this electricity bill, it is better to put the leftovers in the refrigerator in time to reduce the breeding of microorganisms and bacteria, and don't use your own health at the expense. However, the best advice is to eat as much as you want, eat less leftovers, and avoid waste.

The problem of leftovers is a problem that every household encounters, but the views of young and old can be said to be completely polarized. The older generation used to live a hard life, being diligent and thrifty, and even if the living conditions are better now, they will still be affected by their previous thoughts and feel that the leftover meals will be eaten. The living conditions of the younger generation are generally better than those of the older generation, and they think that the food should be fresh, and the leftovers have many carcinogens and bacteria, and eating them is not good for the body.

In some families, no matter how much leftovers are left, whether it is meat or vegetarian, even if it is a little soup, they must be put in the refrigerator, thinking that it will not be bad if it is placed in the refrigerator. But as a result, some of the meat was put in the refrigerator, and before it had time to eat, it was already spoiled, and it was a pity to throw it away.

So, is this leftovers harmful? Can you still eat it?

This score situation should also be dialectically viewed, if it is long, just after the leftovers are cooled in a clean container, put them in the refrigerator, and eat them after the next meal, fully heated for 3 minutes, this kind of leftovers generally will not have much harm.

If it is leftovers that cannot be eaten after a meal, and you don't put it in the refrigerator immediately, and you don't eat it immediately after the next meal, and put it for two or three days, the harm of this kind of leftovers will indeed increase. This is because pathogenic bacteria multiply, leading to gastroenteritis and food poisoning.

After repeated heating of the leftovers, the vitamin content and some minerals are left, and the human body can not absorb enough nutrients after eating leftovers regularly, and it is easy to malnourish and decline in physical fitness, which is not conducive to the growth and development of children.

So you have to not eat leftovers? Of course, we don't advocate eating leftovers, but you have to master certain leftover handling skills, and leftovers can be eaten. So, how should we eat leftovers safely?

1. There is no meat leftover.

Leftover vegetarian vegetables, especially green leafy vegetables (spinach, cabbage, etc.) that have been left overnight, will produce nitrite, although the amount will not cause cancer, but the nutritional value of vegetables is greatly reduced, so it is not recommended to eat them.

In addition, the cold salad itself has not been cooked at high temperatures, and the bacterial base is already large, and after being left as leftovers for a period of time, the bacterial number is easy to multiply in large quantities. So please throw away the leftovers of the salad!

2. The excess part is packed in advance.

If you find that the amount of food is too much to eat when it is ready, you can use a clean plate or lunch box, pack it, seal it with plastic wrap, and put it in the refrigerator. In this way, the bacterial base is low, and it is heated at the time of the next meal, which basically does not have any safety problems.

3. Try not to eat overnight dishes.

Generally speaking, there will be no problems with the next meal, eat the leftovers in the morning at noon, eat the leftovers at noon and eat them at night, as long as they are well sealed, put in the refrigerator in time, and fully heated when the next meal is eaten, there will generally be no problems! Overnight dishes are stored for a longer time, and there are relatively more bacteria, so if they are stored properly, it is better, and if they are not stored properly, try not to eat them.

4. Leftovers should be fully heated.

Adequate heating can kill most of the germs in leftovers, but it is important to know that heating is not a panacea, and some toxins released by bacteria cannot be destroyed by heating. Therefore, leftovers that have been left for more than 3 days are recommended to be thrown away directly, and they are not suitable for consumption again.

Summary. The reason why food is put in the refrigerator is as follows: the reason why food can be kept in the refrigerator for a relatively long time is because the low temperature in the refrigerator inhibits the reproduction of bacteria (or fungi), so that the total number of bacteria in the food does not rise too quickly, so the food does not spoil immediately.

In the refrigerator, bacteria or fungi are not frozen to death, but only because of the low temperature, which inhibits the rate at which they multiply. Therefore, food placed in the refrigerator will still spoil after a long time.

There are so many bacteria in the refrigerator, why do you have to put the dishes in the refrigerator?

The reason why food can be stored in the refrigerator for a relatively long time is because the low temperature in the refrigerator inhibits the reproduction of bacteria (or fungi), so that the total number of bacteria in the food does not rise too quickly, so Huisun food does not spoil immediately. In the refrigerator, the bacteria or fungi are not frozen to death, but only because of the low temperature, which inhibits their reproduction.

Therefore, the food placed in the refrigerator will deteriorate after a long time.

Related: If you put the food directly in the refrigerator, you won't give the bacteria a chance to multiply. The temperature in the cold sock room is about 10 degrees Celsius, which causes the bacteria to go to sleep before they have time to multiply.

In other words, putting the food directly in the refrigerator after cooking can reduce bacteria and make the food more hygienic.

The principle of preventing food spoilage is to kill or inhibit the growth and reproduction of bacteria and fungi The low temperature in the refrigerator and the weak respiration can inhibit the growth and reproduction of bacteria, fungi and other microorganisms, so that bacteria and fungi can reproduce very slowly and in small quantities, which slows down the speed of decomposing food and achieves the purpose of keeping fresh It can be seen that c is in line with the topic

Therefore, c

The principle of preventing food spoilage is to kill or inhibit the growth and reproduction of bacteria and fungi The low temperature in the refrigerator can inhibit the growth and reproduction of bacteria, fungi and other microorganisms, so that bacteria and fungi can reproduce very slowly, the number is small, and the food cannot be fully decomposed to achieve the purpose of preservation Therefore, in summer, we put leftovers and leftovers in the refrigerator to extend the storage time

Therefore, b

The growth and reproduction of bacteria need to be kept at a suitable temperature, and the low temperature in the refrigerator inhibits the growth and reproduction of bacteria, so the food is not easy to spoil Therefore, the main reason why the food is stored in the refrigerator is not easy to spoil is that the temperature in the refrigerator is low and the cavity is bright, and the bacterial reproduction rate is slow

Therefore, b

That's right, many people regard the refrigerator as a "food disinfection cabinet" at home, thinking that the food stored in the refrigerator is hygienic. In fact, because the refrigerator is stored for a long time and not cleaned frequently, many bacteria can grow.

Dr. McHeal Conandoyle, director of the Center for Food Safety at the University of Georgia in the United States, suggests that the food in the refrigerator may look fresh on the outside, but it has actually gone bad. For cooked meat, food should not be stored in the refrigerator for more than 4 days.

The common refrigeration temperature for food in the refrigerator is 4 to 8 °C, in which the growth rate of most bacteria slows down. However, some bacteria are cold-loving, such as Yersinia and Listeria can grow and multiply rapidly at this temperature, and if you eat food infected with these bacteria, it will cause intestinal diseases.

In the freezer of the refrigerator, the temperature is generally about minus 18, and at this temperature, bacteria will generally be inhibited or killed, so the food stored in it has a better preservation effect. However, freezing does not mean that it can completely kill bacteria, and there are still some bacteria with strong frost resistance that will survive.

Therefore, although freezing can preserve food for a long time, the microorganisms in the food do not die, and they will continue to grow and reproduce once the temperature rises. Therefore, the food preserved in the refrigerator must be returned to the pot before eating, otherwise it will also cause intestinal infections and even food poisoning.