1. How long can it be frozen?

Fresh meat can be frozen in the refrigerator for 3 months.

The refrigerator has a freezer. The temperature in the freezer is constant at -18℃, and the meat placed on this floor will also be frozen. The frozen meat in the refrigerator can only be kept for 3 months, and it will go sour and deteriorate if it takes too long. With the extension of storage time, the nutrition of pork will be lost, and the taste will become worse. In addition, during storage, a kind of "psychrophilic bacteria" named Listeria will be produced. If the freezing time is too long, it is not suitable for eating again. And often opening the refrigerator during the freezing process has an impact on the shelf life of meat.

2. How long can it be kept in cold storage

Fresh meat can be kept in the refrigerator for one week.

The upper layer of the freezer compartment of the refrigerator is the refrigerating compartment, the temperature of which is constant at about -5℃, and meat food can be kept in the refrigerating compartment for one week. Pork stored in the cold room is also affected by the frequency of opening the refrigerator. Opening the refrigerator often will accelerate the rancidity of pork, and pork stored in the cold room and freezer will also lead to changes in meat quality. Pork cells will be destroyed during freezing, which will affect the taste when eating. Nutrients will also be lost if frozen for a long time.

3. How long can it last

Fresh meat can be kept in the refrigerator for about 3 days.

The fresh-keeping room is located in the cold room of the refrigerator, which usually belongs to this floor at most. Pork can be stored in the fresh-keeping room for about 3 days. If all the fresh meat bought is placed in this floor, it needs to be eaten as soon as possible, which is prone to rancidity and deterioration.

4. How to tell whether the pork has gone bad

If it is kept in the refrigerator for too long, its cell structure will be destroyed, and water will be lost. At this time, see if the pork is yellow and dry, and it tastes like a wood block, which has no fragrance and bad taste. This kind of meat belongs to the meat that has been stored for too long, and the meat that has been frozen for a long time contains high carcinogens.

5. Tips for using boxes

Many people throw food into the refrigerator after they buy it home. Whenever you open the refrigerator, it's 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 is the highest at the refrigerator door and the lowest near the back wall. The upper layer of the refrigerator is warmer and the lower layer is colder; The crisper is rarely turned 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 the refrigerator door frame: packaged but unsealed foods that will not go bad in a day or two, such as tomato sauce, salad dressing, sesame sauce, seafood sauce, cheese, butter, jam, fruit juice, and egg foods such as eggs and salted duck eggs.

2. It is suitable for the upper floor near the door: cooked food, yogurt, desserts, etc. with direct entrance. When storing these foods, we should avoid low temperature and prevent cross-contamination of raw and cooked foods, so it is not suitable to put them on the lower floor.

3, suitable for the upper back wall: leftover food, leftover soybean milk, packaged bean products, etc. Because these foods are easy to breed bacteria, the temperature slightly lower than 1℃ is the most suitable.

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

5. It is suitable for the back wall of the lower floor: foods that are not cooked but need to be preserved at low temperature, such as tofu and salted kelp, as well as foods that are tightly packed and are not afraid of cross-contamination, and foods that are waiting to thaw slowly, which are suitable for storage in the coldest place, such as the back wall of the lower floor.

6. It is suitable for keeping in a fresh-keeping box: salted and refrigerated 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 play an isolation role to avoid cross-contamination, but also have a heat preservation effect to avoid temperature fluctuations caused by frequent opening and closing of refrigerator doors. In addition, if there is a special temperature-adjustable fresh-keeping box, it is best to put the meat in a fresh-keeping box at-1℃-1℃.