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.