Hot food must never be put in a running refrigerator.
Store food should not be too full or too tight, and leave a gap to facilitate cold air convection, reduce the load of the unit, prolong the service life and save electricity.
Food should not be mixed raw and cooked to maintain hygiene. According to the requirements of food storage time and temperature, make rational use of the space in the box. Do not put the food directly on the surface of the evaporator, but put it in a vessel to avoid freezing on the evaporator and inconvenient to take it out.
Fresh fish, meat and other foods can't be put in the refrigerator without treatment. Fresh fish and meat should be packaged in plastic bags and stored in the freezer. Vegetables and fruits should be dried on the outer surface, put at the bottom of the box and stored at zero temperature.
Bottled liquid drinks should not be put into the freezer to avoid freezing and cracking the packaging bottles. It should be stored in the refrigerator or on the door, and it is best to store it at about 4℃.
Refrigerators that store food should not store chemicals at the same time.
Attention should be paid when storing the following foods:
Bananas: If bananas are stored below 12℃, they will turn black and rot.
Fresh Litchi: If fresh Litchi is left at 0℃ for one day, its skin will turn black and its pulp will turn sour.
Tomatoes: After being frozen at low temperature, the meat of tomatoes is bubbly, soft and rotten, or cracked, with dark spots on the surface, uncooked and tasteless, and in severe cases, rancid and rotten.
Ham: If the ham is stored in the refrigerator at low temperature, the water in it will freeze, the fat will precipitate, the leg meat will be caked or loose, and the meat will become stale and easily corrupt.
Chocolate: Once the chocolate is cold stored in the refrigerator, once it is taken out, it will form a layer of hoarfrost on its surface at room temperature, which is easy to go moldy and deteriorate and lose its original flavor.
1, hot food must not be put in the running refrigerator.
2. The food should not be too full or too tight, and there should be a gap to facilitate cold air convection, reduce the load of the unit, prolong the service life and save electricity.
3. Food should not be mixed raw and cooked to maintain hygiene. According to the requirements of food storage time and temperature, make rational use of the space in the box. Do not put the food directly on the surface of the evaporator, but put it in a vessel to avoid freezing on the evaporator and inconvenient to take it out.
4, fresh fish, meat and other foods can not be put into the refrigerator without treatment. Fresh fish and meat should be packaged in plastic bags and stored in the freezer. Vegetables and fruits should be dried on the outer surface and put at the bottom of the box, and stored at above zero degrees Celsius.
5, can't put bottled liquid drinks into the freezer, so as not to freeze and crack the packaging bottle. It should be stored in the refrigerator or on the door, and it is best to store it at about 4℃.
6. Refrigerators for storing food should not store chemicals at the same time.
1) Banana: Storage in the environment below 12℃ will make it black and rotten.
(2) Fresh litchi: If it is put in an environment below 0 degrees for one day, its skin will turn black and its pulp will turn sour.
(3) Cucumber: Put it in the refrigerator at 0℃ for three days, the epidermis will be soaked in water and lose its flavor.
(4) Tomatoes: After freezing, some or all fruits will be soft and rotten in water, showing brown round spots.
5] Beer: If the temperature is lower than 0℃, the appearance is cloudy and the taste is not good. Therefore, beer should not be stored in the refrigerator in any season.
[6] Bread
How long can food be kept in the refrigerator ...
Fresh eggs: refrigerated for 30~60 days
Cooked eggs: refrigerated for 6-7 days.
Milk: refrigerated for 5~6 days.
Yogurt: refrigerated for 7~ 10 day.
Fish: refrigerated 1~2 days and frozen for 90~ 180 days.
Beef: refrigerated 1~2 days for 90 days.
Steak chops: refrigerated for 2~3 days and frozen for 270 days.
Sausage: refrigerated for 9 days and frozen for 60 days.
Chicken: refrigerated for 2~3 days and frozen for 360 days.
Canned food: refrigerated for 360 days without opening the can.
Peanut butter and sesame paste: have been opened and refrigerated for 90 days.
Coffee: opened and refrigerated 14 days
Apples: refrigerated for 7~ 12 days.
Citrus: refrigerated for 7 days
Pear: refrigerated 1~2 days
Cooked tomatoes: refrigerated 12 days
Spinach: refrigerated for 3~5 days.
Carrots and celery: refrigerated for 7~ 14 days.
Leaf vegetables: It's best not to put them next to the refrigerator, or they will rot.
During the baking process of bread, the amylose in flour has aged, which is the reason why bread has elastic and soft structure. With the singing of preventing practice, the linear chain of the amylose part in bread is slowly associated.
Close, and make the soft bread gradually harden, the phenomenon in the society is called "aging". The aging speed is related to temperature. It hardens faster in a low greenhouse, and the bread hardens faster in the refrigerator than at room temperature, so if
Bread should be stored at room temperature for a short time to prevent it from hardening.
Traditional Chinese medicine should not be put in the refrigerator, and medicinal materials should be put in the refrigerator. If they are mixed with other foods for a long time, not only are all kinds of bacteria easy to invade the medicinal materials, but they are also easy to get wet, which destroys the medicinal properties of medicinal materials, so it is expensive for some.
Heavy medicinal materials, such as ginseng, velvet antler, gastrodia elata, codonopsis pilosula, etc., can be put in a clean glass bottle if they need to be preserved for a long time, and then a proper amount of glutinous rice fried to dark yellow with slow fire is put in, and put in after cooling, and the bottle cap is sealed and put aside.
A cool and ventilated place.
Don't put leftover moon cakes in the refrigerator. Moon cakes are cakes refined with flour, oil, sugar and nuts and baked. Baked food should not be stored in the refrigerator.
Although for some kinds of moon cakes, putting them in the refrigerator can prolong their shelf life, it will still affect their flavor. This is because the starch in the raw materials of moon cakes ripens after baking, and becomes soft, while it is at low temperature.
After cooking, the cooked starch will separate out water and become aging (that is, "retrogradation"), which will make the moon cake hard and taste worse.
Moon cakes with less oil and water, such as Zilaihong and Zilaihai moon cakes in old Beijing, are more hardened. If they are placed in a low-temperature and humid environment in the refrigerator, they will not only harden quickly, but also become moldy. However, for Cantonese-style moon cakes, their oil content is high, flour is low, and the taste change will be relatively small.
Fish in the refrigerator should not be stored for too long. The refrigeration temperature of household refrigerators is generally-15℃, and the best refrigerator can only reach-20℃, while the storage temperature of aquatic products, especially fish, does not reach-30℃.
When the fish is fresh, dehydration or other changes will take place in the fish tissues. For example, if the crucian carp is refrigerated for a long time, it will be prone to rancidity and the meat quality will change, making it inedible. Therefore, the fish stored in the refrigerator should not be kept for too long.
Frozen food should not be stored after thawing. Frozen food bought from the market, such as meat, fish, chicken, duck, eggs and quick-frozen vegetables, should be processed and eaten as soon as possible once thawed, and should not be stored. If the storage time is too long
Long, meat, fish, chickens, ducks, etc. will not only reproduce and decompose protein quickly, but also produce toxic histamine substances, which will cause food poisoning if people eat it; When frozen vegetables are stored
If it is too long, it will not only change color, lose nutrition and reduce quality, but also rot easily and become inedible. When frozen meat, fish, chicken and duck are frozen, their tissues and cells are destroyed due to the crystallization of water.
After thawing, a large amount of protein will seep out of the damaged tissues and cells, which will become the food for bacterial reproduction. Experiments show that the fresh mackerel which has been frozen 1 day will be put at 30℃ for 6 hours, and its spoilage rate will be faster.
Faster than fresh fish 1 times; When the thawed egg yolk was placed at 18℃ for 2 hours, the number of bacteria increased by about 2 times, and after 8 hours, the number of bacteria increased by more than 50 times. Keep the frozen fresh eggs at 0 ~15℃ for 10 days.
Above, due to the change of cold and hot temperatures for too long, not only the egg membrane becomes loose and the egg white is thin, but also it sticks to the shell, turns yellow, and even becomes moldy and stinks, making it inedible; Frozen vegetables, especially in hot weather, are not suitable for storage.
Otherwise, green leafy vegetables will soon turn yellow and vitamin C will be easily destroyed. When vegetables are stored at 20℃, the decomposition loss of vitamin C is twice as high as that at 6 ~ 8℃.
The suitable storage temperature of Chinese cabbage, celery, onion and carrot is about 0℃.
The suitable storage temperature of cucumber, eggplant and tomato is between 7.2℃ and 10℃.
Pumpkin is suitable for storage above 10℃.
Tomatoes After being frozen at low temperature, the meat of tomatoes is bubbly, soft and rotten, or cracked, with dark spots on the surface, uncooked and tasteless, and in severe cases, rotten.
Bananas will turn black and rot if they are stored below 12℃.
Fresh Litchi If Litchi is left at 0℃ for one day, its epidermis will turn black and its pulp will taste bad.
After the chocolate is refrigerated in the refrigerator, once it is taken out, it will form a layer of frost on the surface at room temperature, which is easy to go moldy and deteriorate and lose its original flavor.
Ham If ham is stored in the refrigerator at low temperature, the water in it will freeze, the fat will separate out, the ham meat will be caked or loose, and the meat will become stale and easily corrupt.
During the baking process of bread, the amylose in flour has aged, which is the reason why bread has elastic and soft structure. With the singing of preventing practice, the linear chain of the amylose part in bread is slowly associated.
Close, and make the soft bread gradually harden, the phenomenon in the society is called "aging". The aging speed is related to temperature. It hardens faster in a low greenhouse, and the bread hardens faster in the refrigerator than at room temperature, so if
Bread should be stored at room temperature for a short time to prevent it from hardening.
Traditional Chinese medicine should not be put in the refrigerator, and medicinal materials should be put in the refrigerator. If they are mixed with other foods for a long time, not only are all kinds of bacteria easy to invade the medicinal materials, but they are also easy to get wet, which destroys the medicinal properties of medicinal materials, so it is expensive for some.
Heavy medicinal materials, such as ginseng, velvet antler, gastrodia elata, codonopsis pilosula, etc., can be put in a clean glass bottle if they need to be preserved for a long time, and then a proper amount of glutinous rice fried to dark yellow with slow fire is put in, and put in after cooling, and the bottle cap is sealed and put aside.
A cool and ventilated place.
Don't put leftover moon cakes in the refrigerator. Moon cakes are cakes refined with flour, oil, sugar and nuts and baked. Baked food should not be stored in the refrigerator.
Although for some kinds of moon cakes, putting them in the refrigerator can prolong their shelf life, it will still affect their flavor. This is because the starch in the raw materials of moon cakes ripens after baking, and becomes soft, while it is at low temperature.
After cooking, the cooked starch will separate out water and become aging (that is, "retrogradation"), which will make the moon cake hard and taste worse.
Moon cakes with less oil and water, such as Zilaihong and Zilaihai moon cakes in old Beijing, are more hardened. If they are placed in a low-temperature and humid environment in the refrigerator, they will not only harden quickly, but also become moldy. However, for Cantonese-style moon cakes, their oil content is high, flour is low, and the taste change will be relatively small.
Fish in the refrigerator should not be stored for too long. The refrigeration temperature of household refrigerators is generally-15℃, and the best refrigerator can only reach-20℃, while the storage temperature of aquatic products, especially fish, does not reach-30℃.
When the fish is fresh, dehydration or other changes will take place in the fish tissues. For example, if the crucian carp is refrigerated for a long time, it will be prone to rancidity and the meat quality will change, making it inedible. Therefore, the fish stored in the refrigerator should not be kept for too long.
Frozen food should not be stored after thawing. Frozen food bought from the market, such as meat, fish, chicken, duck, eggs and quick-frozen vegetables, should be processed and eaten as soon as possible once thawed, and should not be stored. If the storage time is too long
Long, meat, fish, chickens, ducks, etc. will not only reproduce and decompose protein quickly, but also produce toxic histamine substances, which will cause food poisoning if people eat it; When frozen vegetables are stored
If it is too long, it will not only change color, lose nutrition and reduce quality, but also rot easily and become inedible. When frozen meat, fish, chicken and duck are frozen, their tissues and cells are destroyed due to the crystallization of water.
After thawing, a large amount of protein will seep out of the damaged tissues and cells, which will become the food for bacterial reproduction. Experiments show that the fresh mackerel which has been frozen 1 day will be put at 30℃ for 6 hours, and its spoilage rate will be faster.
Faster than fresh fish 1 times; When the thawed egg yolk was placed at 18℃ for 2 hours, the number of bacteria increased by about 2 times, and after 8 hours, the number of bacteria increased by more than 50 times. Keep the frozen fresh eggs at 0 ~15℃ for 10 days.
Above, due to the change of cold and hot temperatures for too long, not only the egg membrane becomes loose and the egg white is thin, but also it sticks to the shell, turns yellow, and even becomes moldy and stinks, making it inedible; Frozen vegetables, especially in hot weather, are not suitable for storage.
Otherwise, green leafy vegetables will soon turn yellow and vitamin C will be easily destroyed. When vegetables are stored at 20℃, the decomposition loss of vitamin C is twice as high as that at 6 ~ 8℃.
Food in and out of the refrigerator is very particular.
First, cooked food should be cooled thoroughly before entering the refrigerator. If the food is not fully cooled and suddenly enters the low-temperature environment, the hot air it brings will cause water vapor condensation, which can promote the growth of mold and lead to the mildew of food in the whole refrigerator. (Reminder: Do not put unwashed raw eggs in the refrigerator. Bread should not be kept in the refrigerator.)
Second, the cooked food taken out of the refrigerator must be returned to the pot. The temperature in the refrigerator can only inhibit the reproduction of microorganisms, but can't completely kill them.
Third, food should not be put into the refrigerator after thawing. Repeated freezing will cause the loss of food tissue and nutrients.
Four, frozen food should be naturally thawed at room temperature, and it is not appropriate to use tap water shower or hot water pouring to thaw food.