After freezing, the ice crystals are sharp and increase in volume, which will puncture the cells, causing cell juice to flow out and the texture to become soft after thawing. Therefore, when freezing,

After freezing, the ice crystals are sharp and increase in volume, which will puncture the cells, causing cell juice to flow out and the texture to become soft after thawing. Therefore, when freezing, it is necessary to go through the freezing process as quickly as possible at a very low ambient temperature and with efficient cold transfer, so that the water in the food does not have time to form large ice crystals, but instead forms many tiny ice crystals. As for puncturing the cells, it will be less likely to cause juice loss and soft texture after thawing. This is also "quick...gt;gt; What can be put in the refrigerator?

1. Bread should not be put in the refrigerator

Bread During the baking process, the amylose portion of the starch in the flour has aged, which is why the bread has an elastic and soft structure. As the storage time increases, the linear portion of the amylopectin portion in the bread slowly deteriorates. The soft bread gradually becomes hard, which is called "staleness".

The speed of "staleness" is related to the temperature. At low temperatures (above the freezing point), the bread ages faster. Bread will harden faster if it is placed in the refrigerator

2. Cucumbers and green peppers should not be stored in the refrigerator for a long time

Cucumbers and green peppers will suffer from frostbite if they are stored in the refrigerator for a long time. ——Turn black, become soft, and change flavor. Cucumbers will also grow hair and become sticky because the storage temperature in the refrigerator is generally around 4°C to 6°C, while the suitable storage temperature for cucumbers is 10°C to 12°C, and the storage temperature for green peppers is 7°C to 7°C. 8℃. Therefore, it should not be stored for a long time.

3. Bananas

Storing bananas below 12℃ will cause them to turn black and rot.

4. Tomatoes

After being frozen at low temperature, the flesh of tomatoes becomes blister-like, soft and rotten, or appears to be falling apart, with black spots on the surface, undercooking, and no umami flavor. In severe cases, it will become rancid and rotten.

5. Ham

If ham is stored in the refrigerator at low temperature, the water in it will freeze, the fat will precipitate, the leg meat will become lumpy or loose, the meat will become odorless, and it will easily go rancid. .

6. Chocolate

Once chocolate is taken out of the refrigerator, a layer of white frost will form on its surface at room temperature, which is prone to mold and deterioration. Lose its original flavor.

7. Fresh lychees

If fresh lychees are left in an environment of 0℃ for a day, the skin will turn black and the pulp will change flavor.

8. List of how long food can be stored in the refrigerator

Fresh eggs: refrigerated for 30 to 60 days

Cooked eggs: refrigerated for 6 to 7 days

Milk: Refrigerate for 5 to 6 days

Yogurt: refrigerate for 7 to 10 days

Fish: refrigerate for 1 to 2 days and freeze for 90 to 180 days

Beef: refrigerate for 1 ~2 days frozen and 90 days

Steaks: 2~3 days refrigerated, 270 days frozen

Sausages: 9 days refrigerated, 60 days frozen

Chicken: refrigerated 2~3 days, frozen for 360 days

Canned food: refrigerated for 360 days before opening the can

Peanut butter and sesame butter: refrigerated for 90 days after opening the can

Coffee: Opened and refrigerated for 14 days

Apples: refrigerated for 7 to 12 days

Citrus: refrigerated for 7 days

Pears: refrigerated for 1 to 2 days

Ripe tomatoes: refrigerate for 12 days

Spinach: refrigerate for 3 to 5 days

Carrots and celery: refrigerate for 7 to 14 days

9. Refrigerator Six taboos when using it

a. Hot food must not be placed in a running refrigerator.

b. Food should not be stored too full or too tightly. There should be gaps to facilitate cold air convection, reduce the load on the unit, extend the service life, and save electricity.

c. Raw and cooked food should not be mixed together to maintain hygiene. According to food storage time and temperature requirements, make reasonable use of the space in the box. Do not place food directly on the surface of the evaporator, but place it in a container to avoid freezing on the evaporator and making it inconvenient to take out.

d. Fresh fish, meat and other foods cannot be placed in the refrigerator without processing.

Fresh fish and meat should be packaged in plastic bags and stored in the freezer. The outer surface of vegetables and fruits should be wiped dry, placed at the bottom of the box, and stored at above zero temperatures.

e. Do not put bottled liquid beverages into the freezer to avoid freezing and cracking the bottles. It should be placed in a refrigerator or on a door stop, and it is best to store at a temperature of about 4°C.

f. Refrigerators that store food should not also store chemicals.

In addition:

A. Cucumbers and tomatoes: Cucumbers are resistant to ethylene, and tomatoes contain ethylene. Putting the two together will cause cucumbers to deteriorate and rot.

B. Bread and biscuits: Biscuits are dry and have no moisture, while bread has more moisture. When the two are put together, the biscuits will become soft and lose their crispness, and the bread will become hard and unpalatable.

C. Rice and fruits: Rice is prone to heat, and fruits tend to evaporate water and dry up when heated. Rice can also absorb moisture and become moldy or infested with insects.

D. Fresh eggs, ginger and onions: There are many small pores on the eggshell. The strong smell of ginger and onions will penetrate into the pores and accelerate the deterioration of fresh eggs. Over time, the eggs will deteriorate. Smelly.

The suitable storage temperature for cabbage, celery, onions, carrots, etc. is around 0℃.

The suitable storage temperature for cucumbers, eggplants, tomatoes, etc. is between 7.2℃ and 10℃.

Pumpkins should be stored above 10℃.

After tomatoes are frozen at low temperatures, their flesh becomes blister-like, soft and rotten, or spalled. There are black spots on the surface, and they are undercooked and have no umami flavor. In severe cases, they will rot.

If bananas are stored in a place below 12℃, they will turn black and rot.

If fresh lychees are left in an environment of 0℃ for a day, it will cause...gt;gt;

What should I do if there are too many things in the refrigerator freezer? How about opening it?

If you have already made a lot, you can pack it in a crisper and put some in the refrigerator. It will last for three to five days. You can put the thicker ones in a crisper and put it in Freezer, ten days is fine. When you want to eat, take it out, add water and boil it.

How to store food correctly in the refrigerator compartment?

1. Classification: packaged foods with different degrees of cleanliness, different heights, meat and vegetable foods;

2. There are gaps between the foods to facilitate the circulation of air-conditioning;

3. The storage time should not be too long

4. Products that are prone to freezing damage, such as bananas, cannot be stored

5. When putting in a large amount at one time, it is best to put it in the freezer for a short period of time. Chill it down (don’t forget it)

How long can things in the freezer of the refrigerator be kept?

Hello!

The refrigerator is a tool for food preservation. Different foods require different preservation temperatures. Therefore, the temperature of the refrigerator should be set according to the type of food stored, such as 12 degrees for green leafy vegetables and 10 degrees for tropical fruits. Degree, cooked food is 8 degrees, beer and beverages are 4 degrees, fresh meat is -18 degrees, fish and shrimp are 0 degrees, etc. The storage period of refrigerated food is 7-10 days, and frozen food such as meat can be stored for 3 months if it reaches -18 degrees.

What is the order in which food is stored in the freezer of the refrigerator, that is, those on the top and those on the bottom? Ask experts with life experience for advice.

The order of storing food in the freezer compartment of the refrigerator:

1: Based on the principle of placing frequently used foods on the top and infrequently used foods on the bottom: for example: ice cream on the top, seafood on the top Put it on the bottom;

2: Put cooked food on the top, and put uncooked food on the bottom: for example: put steamed buns on the top, and put raw meat on the bottom;

3: Put fish, shrimp and other seafood on the bottom;

What are the appropriate things to put in the freezer compartment of the refrigerator?

Chickens, ducks and other things that can withstand freezing!

Is it okay to not put anything in the freezer of the refrigerator?

It is okay to not put anything, but it will waste a small amount of electricity, because there is no stuff to fill the freezer, and it will be put in every time you open the refrigerator. Part of the air heat will immediately consume part of the electricity. Therefore, the best way is: if you do not store items, you can fill them with plastic foam boards, which will reduce the intrusion of air.

How to classify and place the items in the refrigerator

How to put the food in the refrigerator and how to eat it in a more scientific and reasonable way? Nutrition experts pointed out that general household refrigerators have two doors, one freezer and one refrigerator. The temperature of the freezer is minus 18°C, and the temperature of the refrigerator is between 1°C and 7°C. There are drawers under the refrigerator. The temperature is close to 7℃. Different foods have their own refrigeration temperatures. Some foods can be stored in the refrigerator for a year, while some foods can only be stored for a day or two. Cabbage, spinach, celery, carrots, peaches, grapes, apples, etc. are suitable for storage at 0°C. However, it is best not to put these fruits and vegetables in the refrigerator immediately after you buy them, because the low temperature will inhibit the enzyme activity of the fruits and vegetables, preventing the residual toxins from being decomposed. Therefore, it is best to store these fruits and vegetables at room temperature for one day before putting them in the refrigerator. Tomatoes, cucumbers, bell peppers, lychees and other fruits and vegetables contain a lot of water and are best stored in drawers in the refrigerator. Remember not to store them for a long time. Due to their high water content, these fruits and vegetables will turn black, soft, and change flavor after being refrigerated for a long time. Tropical fruits are best stored in a dark and cool place. If it must be placed in the refrigerator, it should be placed in a vegetable and fruit tank with a higher temperature. It is best not to store it for more than two days. The suitable storage temperature for fruits and vegetables such as bananas, lemons, and pumpkins is 13°C to 15°C. Low-temperature storage can easily cause them to turn black and rot. Ham should not be refrigerated either, as the fat in it will leach out, causing the ham to become lumpy or loose. After the chocolate is refrigerated, frost will easily form on the surface, causing it to lose its original flavor. Bread and other pasta should not be stored in the refrigerator, otherwise the linear part of the amylopectin will slowly associate, gradually hardening and "stale". The vegetables stored in the refrigerator also taste very particular. Lu Quanjun, deputy dean, Ph.D., master's tutor, and associate professor of the School of Public Health of Zhengzhou University, said that for vegetables, leafy vegetables should be eaten first and then roots; for fruits and vegetables stored in the refrigerator, in addition to the order of storage, It is best to buy those that do not touch water, so that the storage time will be slightly longer and the vitamins will not be lost easily. It is more reasonable to place the food in the refrigerator this way. Open bottled foods such as ketchup, salad dressing, sesame sauce, hoisin sauce, cheese, butter, jam, juice, etc., as well as egg foods such as eggs, salted duck eggs, etc., are suitable for placement on the refrigerator door shelf. ; Direct-entry cooked food, yogurt, desserts, etc. can be placed near the door on the upper floor; leftovers, leftover soy milk, packaged soy products, etc. that are prone to bacteria can be placed on the back wall of the upper floor; various vegetables and temperate fruits such as apples and pears , should be packed in fresh-keeping bags to avoid freezing due to low temperature, and should be placed on the lower floor near the door.