Banana: stored in the environment below 12℃, it will turn black and rot.
Fresh litchi: If it is left in an environment below 0 degrees for one day, the peel will turn black and the pulp will turn sour.
Cucumber: If it is kept in the refrigerator at 0℃ for three days, the skin will be soaked in water and lose its taste.
Tomatoes: After freezing, some or all fruits will be soaked in water and become soft and rotten, showing brown round spots.
Bread: In the baking process, the linear segment of starch in flour has aged, which is the reason why bread has elastic and soft structure. With the extension of storage time, the linear part of amylopectin in bread slowly associates, which makes the soft bread gradually harden. This phenomenon is called "aging". The speed of "aging" is related to temperature. At low temperature (above freezing point), bread will age faster, but after being put in the refrigerator, the degree of hardening will come faster.
Cucumber and green pepper: Cucumber and green pepper will freeze and "hurt" if put in the refrigerator for a long time-turn black, soften and taste bad. Cucumbers also have sticky hairs. Because the temperature of refrigerator storage is generally around 4℃ to 6℃, the suitable storage temperature of cucumber is 10℃ to 12℃, and the suitable storage temperature of green pepper is 7℃ to 8℃. So it shouldn't last long.
Ham: If it is stored in the refrigerator, the water in it will easily freeze, which will promote the oxidation of fat in ham, and the quality of ham will be obviously reduced, greatly shortening the shelf life. ?
Chocolate: The indoor temperature is generally around 25℃ in summer. At this point, if Chock is taken out of the refrigerator, the chocolate surface will frost immediately. After a long time, chocolate will become moldy or worm-like due to humidity.
Leaf vegetable: It's best not to put it next to the refrigerator, or it will rot.
1. Bread should not be put in the refrigerator.
During the baking process of bread, the starch linear segment in flour has aged, which is the reason why bread has elastic and soft structure. With the extension of storage time, the linear part of amylopectin in bread slowly associates, which makes the soft bread gradually harden. This phenomenon is called "aging".
The speed of "aging" is related to temperature. At low temperature (above freezing point), bread will age faster, but after being put in the refrigerator, the degree of hardening will come faster.
Cucumber and green pepper should not be stored in the refrigerator for a long time.
Cucumbers and green peppers will be frozen and "injured" if they are kept in the refrigerator for a long time-turning black, soft and stale. Cucumbers also have sticky hairs. Because the temperature of refrigerator storage is generally around 4℃ to 6℃, the suitable storage temperature of cucumber is 10℃ to 12℃, and the suitable storage temperature of green pepper is 7℃ to 8℃. So it shouldn't last long.
banana
Bananas will turn black and rot when stored below 12℃.
tomato
After being frozen at low temperature, tomato meat is blistered, soft and rotten, or cracked, with black spots on the surface, raw and tasteless, and rancidity and decay are serious.
5. Ham
If ham is stored in the refrigerator at low temperature, the water inside will freeze, the fat will precipitate, the leg meat will agglomerate or loosen, the meat will become stale and easy to rot.
6.chocolate
Once the chocolate is put into the refrigerator, once it is taken out, it will form a layer of frost on its surface at room temperature, which is easy to go moldy and deteriorate and lose its original flavor.
7. Fresh litchi
If fresh litchi is left at 0℃ for one day, the skin will turn black and the pulp will go bad.
8. How long can food be kept in the refrigerator?
Fresh eggs: refrigerated for 30~60 days
Cooked eggs: refrigerated for 6-7 days.
Milk: Refrigerate for 5~6 days.
Yogurt: refrigerated for 7~ 10 days.
Fish: refrigerated 1~2 days, frozen 90~ 180 days.
Beef: refrigerated 1~2 days, frozen for 90 days.
Steak: 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: Refrigerate for 360 days without opening cans.
Peanut butter and sesame paste: opened and refrigerated for 90 days.
Coffee: opened and refrigerated 14 days.
Apple: refrigerated for 7~ 12 days.
Citrus: refrigerated for 7 days
Pear: refrigerated 1~2 days.
Cooked tomatoes: refrigerated 12 days.
Spinach: Refrigerate for 3~5 days.
Carrots and celery: refrigerated for 7~ 14 days.
9. Six taboos when using the refrigerator
A. Hot food should never be put into a running refrigerator.
B food should not be stored too full or too tight, leaving gaps to facilitate cold air convection, reduce the load of the unit, prolong the service life and save electricity.
C. In order to maintain hygiene, food should not be mixed raw and cooked. According to the requirements of food storage time and temperature, the space in the box is reasonably utilized. Don't put the food directly on the surface of the evaporator, but put it in a vessel to avoid freezing on the evaporator, which is inconvenient to take out.
D fresh fish, meat and other foods should not be put in the refrigerator without treatment. Fresh fish and meat should be packed in plastic bags and then stored in the refrigerator. Vegetables and fruits should be dried on the outer surface, placed at the bottom of the box and stored at a temperature above zero.