(1) Banana: It will turn black and rot if it is stored below 12℃.

(2) Fresh litchi: If it is placed in an environment below 0 degrees for one day, the peel will turn black and the pulp will turn sour.

(3) Cucumber: After three days in the refrigerator at 0℃, 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.

It is best not to put bread in the refrigerator: during baking, 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 should not be stored in the refrigerator for a long time: if green pepper is stored in the refrigerator for a long time, it will be frozen "injured"-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.

It is best not to put bread in the refrigerator: during baking, 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.

Tell you some common sense, please be sure to put an end to the occurrence of "refrigerator diarrhea" and store processed food reasonably.

1. Put a thermometer in the freezer to keep its temperature at 4- 10℃.

2. Store raw and cooked separately, and pack with fresh-keeping box or plastic wrap to avoid cross-contamination.

3. Cooked food should be stored when it is cooled to room temperature, and the longer it is stored at room temperature, the more dangerous it is.

4. The food taken out of the refrigerator should be heated indoors for more than 15 minutes.

5. the storage time should not be too long, and the food that needs to be preserved for a long time should be put in the freezer.

6. Clean the refrigerator frequently and keep it clean.