How long can frozen meat be stored in the fridge?

Cryogenic storage, the refrigeration of meat, is carried out in cold storage or refrigerators, and is the most practical method of storage of meat and meat products. At low temperatures, especially when the temperature drops below -10, the moisture in the meat freezes, creating an environment where bacteria cannot grow and develop. But when the meat is thawed and restored, the bacteria begin to grow and multiply again due to the increase in temperature and the oozing of the gravy.

Therefore, when using low temperature to store meat, it is necessary to maintain a certain low temperature until it is eaten or processed, otherwise the quality of meat cannot be guaranteed. The refrigeration of meat can be divided into two types: chilled meat and frozen meat. 1. Chill the meat:

It is mainly used for meat that is stored for a short period of time, and usually reduces the core temperature of the meat to about 0 1. The specific requirement is that before the meat is put into cold storage, the storage temperature should be reduced to about minus 4, and after the meat is put into storage, it should be kept between -1 0. Pork is cooled for 24 hours and can be stored for 5 to 7 days.

After cooling, a dry film forms on the surface, which stops the growth of bacteria and slows down the evaporation of water, extending the shelf life. 2. Frozen meat: The meat is quickly and deeply frozen to freeze most of the water in the meat into ice, which is called frozen meat.

Frozen meat is more shelf-stable than chilled meat. Meat is generally frozen at a temperature below -23 and stored at around -18. In order to improve the quality of frozen meat, so that it can restore the original taste and nutritional value after thawing, most of the cold storage currently adopts the quick-freezing method, that is, the meat is put into the quick-freezing room of -40, so that the meat temperature is quickly reduced to below -18, and then moved into the cold storage.

How long can frozen meat be frozen? Seafood and river shrimp are up to four months, red meat such as pigs, beef and sheep is 10 to 12 months, and chickens, ducks and geese are 8 to 10 months.

1. Red meat pork, beef, mutton 10 12 months. Among them, beef is more stable than pig and mutton, and lean meat is preserved longer than fatty meat.

2. Poultry, chicken, duck, goose, pigeon meat.

Equal to red meat slightly shorter, for 8-10 months.

3. The shelf life of seafood and river fresh products including fish, shrimp, turtles, shellfish, etc.

It is shorter than livestock and poultry meat, generally up to about half a year, and it is best to eat it within 4 months.

4. For frozen meat, repeated thawing and freezing should be avoided. When buying frozen meat, it is necessary to pay attention to the fact that if the product is yellow, white and dry, it may be stored for too long, and it is best not to buy it.

The following foods should be placed in the freezer.

1. Starchy staple foods such as bread.

Most staple foods, such as bread, steamed buns, steamed buns, rice, noodles, etc., are best put in the freezer if they cannot be eaten within 3 days. This can not only prolong the shelf life, but also prevent starchy foods from aging and becoming dry and hard.

2. Grains and nuts.

In the hot season, red beans and other grains are easy to have insects, but if you can freeze them for 3-4 weeks, and then take them out and put them at room temperature, you can avoid the growth of insect eggs and mold.

In addition, nuts contain more oily components, which are easy to oxidize at room temperature, resulting in an unpleasant hala smell.

At the same time, they can also absorb moisture from the air, regain moisture, and even mildew. Similarly, this kind of freezing treatment is also suitable for red dates, raisins and other foods with relatively low moisture content and easy to insects.

The above content refers to People's Daily Online-How long can you not eat the meat jelly in the refrigerator? A table that sums it up clearly.

Frozen meat can be stored in the refrigerator for up to three months. If the temperature of the freezer can reach minus 18 degrees, the meat can be stored for three months. The key here is the temperature of the freezer, which does not reach minus 18 degrees Celsius (formerly known as a three-star star), and the storage time is not long.

The "psychrophiles" that live in the refrigerator can grow in an environment of 0 20, and the most common psychrophilic bacteria are Yers and Listeria monocytogenes. Listeria monocytogenes is an intracellular parasite found in everyday foods such as meat chop products, dairy products, vegetables, salads and seafood. It can survive at the temperature of 2 5 and Zheng 42, reproduce the fastest at 4 6 hours, and can grow and reproduce for a long time in the refrigerator room under the household refrigerator.

In addition, some fungi and molds can also cause cross-contamination and spoilage of food in the refrigerator. Doctors recommend that the refrigerator room should be cleaned and disinfected regularly, especially in summer, and it is best to clean it once a week. In addition, hot food should be cooled before being stored in the refrigerator to minimise moisture in the box and avoid mold on the inside of the refrigerator.

Do not store fresh meat for more than half a year, and store frozen fish for more than two months. Fourth, frozen food should not be stored again after thawing.

Extended Materials

There are 9 principles of refrigeration (1).

Compression refrigerator: The mechanical energy is provided by an electric motor, and the work is done on the cooling system by the compressor.

The refrigeration system is made by using the principle of absorbing the heat of vaporization when the refrigerant (or refrigerant) with a low boiling point is evaporated. Advantages: long life, easy to use, currently 91-95% in the world

of refrigerators fall into this category. The principle and types of refrigerator cooling.

2) Absorption refrigerator:

This type of refrigerator uses heat sources such as gas, kerosene, electricity, etc. as power. The ammonia-water-hydrogen mixed solution is used to achieve the purpose of cooling in the continuous absorption-diffusion process.

Its disadvantage is low efficiency and slow cooling. It has now been phased out.

3) Semiconductor refrigerator:

This is a refrigerator that uses the principle of direct current to generate the Peltier effect at the junction by using a PN-type semiconductor.

Many electronic circuits and miniature instruments often use this method to dissipate heat. (4)

Chemical refrigerator: A refrigerator that uses certain chemicals to dissolve in water and absorb heat strongly to achieve a cooling effect.

5) Electromagnetic vibrating refrigerator:

The refrigerator uses an electromagnetic vibrator as the main power to drive the compressor. In principle, the structure is basically the same as that of a compression refrigerator.

6) Solar Refrigerator:

Refrigerators that use solar energy as a cooling energy source.

7) Adiabatic demagnetization refrigerator.

8) Radiation-cooled refrigerators.

9) Solid refrigerated refrigerators.

Meat food can be stored in the refrigerator freezer at a temperature of about -18. It can store fresh or frozen meat, fish, poultry, as well as cooked food for about 3 months. Located in the upper part of the refrigerator, the ice temperature preservation room, the temperature is about 0, which can store fresh meat, fish, shellfish, dairy products and other foods, which can be kept fresh and will not freeze, and can be taken at any time, and the storage period is about three days.

Located in the upper part of the refrigerator, the ice temperature preservation room, the temperature is about 0, which can store fresh meat, fish, shellfish, dairy products and other foods, which can be kept fresh and will not freeze, and can be taken at any time, and the storage period is about three days. The ice temperature storage room can also be used as a thawing room for frozen food, and if the food is placed in the room before work, it can be picked up and used immediately after work.

1) Fresh milk should be placed in a cool place immediately, preferably in the refrigerator.

2) Do not expose the milk to sunlight or light, sunlight and light will destroy several vitamins in the milk, and at the same time.

10-12 monthsAccording to the provisions of the "Panlu Yunqiao Cold Storage Management Specification", the meat is transported quietly under the condition of minus 18 degrees Celsius, and the shelf life is 10-12 months.

It can be eaten in the freezer, if the temperature in the freezer is very low, and the meat is completely frozen, then after the power outage, as long as the freezer is not opened and sealed well, the meat can generally last for 2-3 days.

If the power goes out within 4 hours, the food in the refrigerator is completely edible. However, the premise is that the refrigerator door must be closed tightly during a power outage. If it is more than 4 hours, the freezer layer is in a very full state, and the food can be safely kept fresh for 48 hours, and the half-full state can only be kept fresh for 24 hours.

Therefore, it is recommended to put milk and perishable foods such as dairy products, meat, fish, eggs, etc., in a container with ice cubes for cooling and storage in time after a power outage.

After the freezer meat is taken out, if you want to thaw it quickly, many people will think of soaking it in hot water, but this is wrong, because if the frozen meat is thawed in hot water, it will produce a substance called propionaldehyde, which is a carcinogen.

The correct way to quickly thaw freezer meat is to soak it in cold water or place it in a place of 4 8 to allow it to thaw naturally, or to leave it indoors for a few hours before using it.

When meat is frozen, its intracellular fluid and extracellular fluid are quickly frozen into ice, forming a crystal between the meat fiber and the cell, which is the most valuable protein and delicious substance. If thawed with hot water, not only will it lose part of its protein and its aroma, but more importantly, it will form a strong carcinogen called propionaldehyde.

The above content refers to People's Daily Online Can you still eat food in the refrigerator after a power outage.