What's the point of storing food in the refrigerator? How to store food correctly?

Most people will store food in the refrigerator, but it is not foolproof to store food in the refrigerator. Even if a lot of food is put in the refrigerator, there will be frostbite and freezing, so there are many stresses on storing food in the refrigerator. So what is the pressure on the refrigerator to store food? How to store food correctly?

1, method of storing food in refrigerator

The common cold storage temperature of food in the refrigerator is 4℃ to 8℃. In this environment, the growth rate of most bacteria will slow down. But some bacteria are psychrophilic, such as Yersinia, Listeria, etc., which can grow and reproduce rapidly at this temperature. If you eat food infected with this kind of bacteria, it will cause intestinal diseases.

The temperature in the freezer of the refrigerator is generally around-18℃. At this temperature, bacteria are generally inhibited or killed, so the food stored in it has better fresh-keeping effect.

But freezing does not mean that it can be completely sterilized, and some bacteria with strong freezing resistance will survive. Therefore, from another perspective, if the refrigerator is not disinfected frequently, it will become a "hotbed" for some bacteria.

In addition, don't store too much food in the refrigerator, which will make the external temperature of food low and the internal temperature high, leading to deterioration.

Some housewives use the refrigerator as a fresh-keeping box to store food for a long time. How to use the refrigerator correctly is also an indispensable family knowledge for housewives. For the health of your family, you must know how long the food in the refrigerator can be kept.

Is there a lot of stock in your refrigerator? Do you think they can keep their nutrition in the refrigerator? In fact, green leafy vegetables and apples are put together in the refrigerator, and the leaves will soon turn yellow and rot; When the juice is opened, put it back in the refrigerator. Even if the bottle cap is tightened, half of vitamin C will be lost within one week.

1, milk must be protected from light, which can not only sterilize, but also "kill" the nutrients in milk. It was found that milk would be acidified and deteriorated after direct exposure for 4 minutes. Vitamin B2 in milk is very sensitive to light, and will be quickly lost under light. Light will also oxidize the lipids in milk, leading to the gradual destruction of other nutrients such as vitamins A, D, B6 and B 12. Among them, milk in glass cans or plastic cans is the most vulnerable. Even under the light of the supermarket freezer, the "best shelf life" of milk is only about 4 hours.

Green tea should be stored in the refrigerator. Green tea has many health benefits and has been proved to help prevent heart disease, cancer, Alzheimer's disease and so on. , mainly because it contains catechins. However, a study published in the American Journal of Food Science pointed out that the catechin content of green tea would decrease after being left at room temperature for six months. So it's best to keep green tea in the refrigerator. Black tea can be stored at room temperature.

3, fruits and vegetables with perishable "infectious" vegetables and fruits together, easy to deteriorate and "infectious". Remember, not only people will get infectious diseases, but also the deterioration between fruits and vegetables will be "contagious". The research of Pennsylvania State University reminds us that when apples, almonds, red peppers, peaches, cantaloupes and tomatoes are put together with other fruits and vegetables, ethylene gas will be released, which will make the latter mature and deteriorate rapidly. In addition, putting the above fruits and vegetables together with cruciferous vegetables and green leafy vegetables will also make the leaves of the latter turn yellow and rot quickly.

It is best to put delicate green leafy vegetables in the refrigerator and eat them as soon as possible. Radish, carrot, cabbage, potato, onion, apple, pear, etc. Are all storable food, suitable for balcony. Root vegetables such as potatoes, the smaller the vitamin C content, the higher it can be stored in paper bags to prevent excessive light and oxygen from destroying vitamin C.

Many users hope to find an effective way to remove the odor in the refrigerator. In fact, activated carbon can remove odor. It is best to prepare two copies of activated carbon for standby, change it once a week or two, and then take it to a dry and sunny place for exposure to ensure the best adsorption effect. It should be noted that the capacity of activated carbon, like batteries, will decrease slightly every time it is "charged and discharged", so remember to replace it in time.

2, refrigerator use skills

Many people throw food into the refrigerator when they buy it home. Every time you open the refrigerator, it is always a mess. In fact, the food in the refrigerator is very knowledgeable. If the position is wrong, the temperature will be wrong, and the quality of food will be greatly affected.

Generally speaking, the temperature at the door of the refrigerator is the highest, and it is the lowest near the back wall; The upper layer of the refrigerator is warmer and the lower layer is colder; The crisper rarely turns over and is close to the lower floor, so the temperature there is the lowest. Therefore, we might as well divide the refrigerator freezer into six areas according to the temperature order: refrigerator door frame, upper door, upper back wall, lower door, lower back wall and fresh-keeping box.

1, suitable for refrigerator door frames: packaged but unopened foods that will not go bad for a day or two, such as tomato sauce, salad dressing, sesame sauce, seafood sauce, cheese, butter, jam, fruit juice, eggs, salted duck eggs and other egg foods.

2, suitable for the upper floor by the door: cooked food, yogurt, desserts, etc. When storing these foods, low temperature should be avoided to prevent cross-contamination of raw and cooked foods, and they should not be placed on the lower floor.

3, suitable for the back wall: leftover food, leftover soy milk, packaged soy products, etc. Because these foods are easy to breed bacteria, the temperature slightly lower than 0℃ is the most suitable.

4, suitable for the lower floor near the door: all kinds of vegetables and temperate fruits such as apples and pears are packed in fresh-keeping bags to avoid freezing at low temperature.

5, suitable for the back wall: uncooked food, but need to be preserved at low temperature, such as tofu, salted kelp and so on. , as well as tightly packed foods that are not afraid of cross contamination, and foods that are waiting to be thawed slowly, are suitable for storage in the coldest places, such as the back lower wall.

6, suitable for storage boxes: acidic frozen meat, semi-frozen fish, fresh shrimp and other seafood. Because bacteria in aquatic products are often resistant to low temperature, it is easy to accelerate their reproduction when the temperature is slightly higher, and the fresh-keeping box can not only isolate and avoid cross-contamination, but also keep warm and avoid temperature fluctuation caused by frequent opening and closing of refrigerator doors. In addition, if there is a special temperature-regulating fresh-keeping box, it is best to put the meat in the-1℃- 1℃ fresh-keeping box.