Why things don t spoil easily when they are put in the refrigerator

Food that is kept in the refrigerator is not easy to spoil because it does not easily participate in chemical reactions and also reduces the reproduction rate of bacteria.

The main cause of food spoilage is microorganisms. Microorganisms are everywhere in the environment, and food is easily contaminated by microorganisms during production, processing, transportation, storage and sales. As long as the temperature is right, microorganisms will grow and multiply, breaking down nutrients in food to meet their own needs.

The second reason for food spoilage is the chemical reaction of food, there are unsaturated bonds in the molecular formula of fats and fats, which are very unstable and easily oxidized, producing a series of chemical reactions. The refrigerator lowers the temperature of the food and isolates the air, so things are less likely to spoil when they are placed in the refrigerator.

The temperature of the refrigerator is low, and the bacteria multiply slowly, so of course it is not easy to deteriorate.

Things go bad because of bacteria, bacteria need the right temperature to grow, refrigerator temperature is low, bacteria grow slowly, and of course it is not easy to spoil.

When the temperature is low, the food itself cells are less active, and bacteria multiply slowly, so it spoils slowly, which does not mean that it will not spoil if you put it in the refrigerator.

The temperature is low, and microorganisms do not easily survive in the food.

1. Some items cannot be placed directly in the refrigerator. Tropical fruits such as raw bananas and mangoes are prone to frostbite if they are placed directly in the refrigerator;

2. The packaging of the goods is not tight. Some foods are not sealed and packaged, and are directly put into the refrigerator, which is easy to get damp and moldy, which affects the taste;

3. Some items need to be refrigerated separately. Such as meat and vegetables, vegetables and fruits. For example, fruits will produce ethylene, although low temperature will inhibit ethylene secretion, but when put together with other vegetables, ethylene will still make other vegetables and fruits spoil faster, which is not conducive to preservation;

4. Concept error. Lu's food was left to cool before being put in the refrigerator. In fact, in the process of cooling, it will provide a good opportunity for bacteria to invade, because bacteria will multiply rapidly in the danger zone of 40 60.

Especially in summer, when you let it cool for less than half an hour, the number of bacteria can double;

5. The refrigerator temperature is not enough. Some things need the right temperature to keep, and too high a temperature may cause things to go bad.

It may be that the temperature is too high, or the food itself is not tightly packaged, or it is already in a perishable stage.

It's easy to spoil things in the refrigerator, maybe you put them for too long or the temperature of the refrigeration is relatively high, so the time for putting things in the refrigerator is greatly reduced, so it's easy to spoil.

If you want to put food in the refrigerator, you can first use plastic wrap to equip the food, and then put it in the refrigerator so that it will not spoil easily.

What to do if things are easy to break in the refrigerator, you have to make sure that there is no problem with the insulation of your refrigerator, the insulation layer of the refrigerator cannot achieve the effect of preservation, and it is definitely easy to spoil the food. The second is that you look at the refrigeration effect of the refrigerator to see if there is a problem, and try not to put some food that is easy to spoil.

1. It will accelerate the deterioration of food. The temperature of the refrigerator is generally maintained at 4 degrees Celsius.

If you put hot food in it, the temperature in the refrigerator will rise rapidly, which will cause other foods to spoil in the hot environment.

2. Increase power consumption. As soon as the hot stuff is put in, the temperature of the refrigerator will increase, and if you want to get the temperature back to 4 degrees Celsius, the refrigerator will only work faster, which will increase the burden on the refrigerator and will also increase the power consumption.

3. Affect life expectancy. The temperature inside the refrigerator is relatively low, and when the hot food is cold, the moisture inside will evaporate and will solidify in the internal evaporator.

A thick layer of frost will form on the evaporator for a period of time, thereby preventing the evaporator from transferring the heat from the inside of the refrigerator to the outside, which will affect the service life of the refrigerator to a certain extent.

4. It will breed harmful substances. As soon as the hot food is put into the refrigerator, its surface temperature will drop rapidly, but the temperature inside it will drop relatively slowly, which is easy to breed lead and produce harmful substances.

Food that is not cold should not be put in the refrigerator. The temperature in the ice beam box is maintained at about 4, when things that exceed this temperature are put in, the refrigerator needs to run to reduce the temperature, which not only consumes electricity, but also increases the burden on the refrigerator. And if you put something at high temperature, the water will evaporate sharply, forming a frost layer on the evaporator, which will block the evaporator from transferring the heat in the refrigerator to the outside, resulting in a decrease in the service life of the refrigerator.

Right way:

1. If the food must be put in the refrigerator while it is hot, it is best to wait for the temperature to drop below 60 degrees (of course, the lower the better), to avoid the temperature being too high and affecting the temperature balance in the refrigerator.

2. It is best to divide hot food into multiple containers and store them separately before putting them in the refrigerator, and the containers should be shallow and have a large open surface, which is conducive to heat dissipation.

3. Hot food can be put in a container, stirred to accelerate cooling, or cooled with cold water or ice water, wiped dry the surface water and put it in the refrigerator.

4. Do not pile up the food in the refrigerator while it is hot, it is best to store it separately, and the location of the refrigerator should not be too crowded, leaving enough space, which is conducive to cold air circulation and makes the refrigerator temperature drop rapidly.

It is not easy to spoil, and it will cause the temperature in the refrigerator to rise, which is not good for other foods to keep fresh, and it will also lead to an increase in power consumption.

It is recommended to put the front source for a while, wait for the hot food, and when the temperature is not too hot, it is more appropriate to put it in the refrigerator.

No, the refrigerator can play a role in cooling and keeping fresh, and hot things can be stored in the refrigerator for a longer period of time.

There are two main reasons, the first is related to the properties of the thing it is put in, in other words, it is not suitable for low temperature environment; The second is related to the microorganisms in the refrigerator, the refrigerator is not a vacuum environment, microorganisms will also grow and multiply in it, if the food is not stored properly, it will also accelerate the deterioration. Here's a detailed analysis of the causes:

1. It is related to the properties of the food itself. For example, the best temperature for storing chocolate is 15 degrees Celsius, and putting chocolate in the refrigerator is easy to make it frost on the surface, and the more typical foods that will accelerate the deterioration of the refrigerator are tropical fruits, such as bananas, lychees, etc.; Dry foods (cereals, powdered milk, coffee) are more susceptible to moisture when left in the refrigerator.

2. It is related to microorganisms in the refrigerator. Many bacteria do not survive easily at low temperatures, so refrigerators can achieve freshness, especially in the freezer compartment of refrigerators. However, there are also a small number of bacteria that can survive in a low temperature environment, and there are relatively more bacteria that can survive in the fresh-keeping room, and many people are used to putting food in the fresh-keeping room, so some foods, especially those that have been opened, are easy to become a breeding ground for Heng Sui bacteria, so they are more likely to spoil in the refrigerator.