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5000pt;<em></em>
mso-font-kerning:1.
0000pt;">In the 1870s , German Karl von Linde invented the world's first household refrigerator.
After more than a hundred years of improvement, the refrigerator has become a necessity in our lives.
But is the refrigerator a safe? Is it safe to put food in the refrigerator? Today, teacher Wang Jun from Qingdao Agricultural University came to talk to us about refrigerators.
0000pt;">In the 1870s , German Karl von Linde invented the world's first household refrigerator.
After more than a hundred years of improvement, the refrigerator has become a necessity in our lives.
But is the refrigerator a safe? Is it safe to put food in the refrigerator? Today, teacher Wang Jun from Qingdao Agricultural University came to talk to us about refrigerators.
In the 1870s , German Karl von Linde invented the world's first household refrigerator.
After more than a hundred years of improvement, the refrigerator has become a necessity in our lives.
But is the refrigerator a safe? Is it safe to put food in the refrigerator? Today, teacher Wang Jun from Qingdao Agricultural University came to talk to us about refrigerators.
5000pt;<em></em>
mso-font-kerning:1.
0000pt;">
0000pt;">
5000pt;<em></em>
mso-font-kerning:1.
0000pt;">The principle of food preservation in the refrigerator is very simple.
It is to use the low temperature environment in the refrigerator to reduce the metabolism and reproduction speed of microorganisms in order to achieve the purpose of extending the preservation period of food.
However, food will gradually deteriorate over time, and depending on the type, nature, and hygiene of the food, the rate of deterioration may vary quickly or slowly.
0000pt;">The principle of food preservation in the refrigerator is very simple.
It is to use the low temperature environment in the refrigerator to reduce the metabolism and reproduction speed of microorganisms in order to achieve the purpose of extending the preservation period of food.
However, food will gradually deteriorate over time, and depending on the type, nature, and hygiene of the food, the rate of deterioration may vary quickly or slowly.
The principle of food preservation in the refrigerator is very simple.
It is to use the low temperature environment in the refrigerator to reduce the metabolism and reproduction speed of microorganisms in order to achieve the purpose of extending the preservation period of food.
However, food will gradually deteriorate over time, and depending on the type, nature, and hygiene of the food, the rate of deterioration may vary quickly or slowly.
5000pt;<em></em>
mso-font-kerning:1.
0000pt;">
0000pt;">
5000pt;<em></em>
mso-font-kerning:1.
0000pt;">Under normal circumstances, green leafy vegetables should be stored in a refrigerator, preferably updated every three days.
Beans, eggplants, tomatoes, green peppers, cucumbers, etc.
can be stored for 4-5 days.
Potatoes, carrots, onions, and cabbage can be stored for a longer time.
, You can put it for half a month.
When the meat is frozen, it can be stored for six months without any problem.
0000pt;">Under normal circumstances, green leafy vegetables should be stored in a refrigerator, preferably updated every three days.
Beans, eggplants, tomatoes, green peppers, cucumbers, etc.
can be stored for 4-5 days.
Potatoes, carrots, onions, and cabbage can be stored for a longer time.
, You can put it for half a month.
When the meat is frozen, it can be stored for six months without any problem.
Under normal circumstances, green leafy vegetables should be stored in a refrigerator, preferably updated every three days.
Beans, eggplants, tomatoes, green peppers, cucumbers, etc.
can be stored for 4-5 days, while potatoes, carrots, onions, and cabbage can be stored for a longer time.
, You can put it for half a month.
When the meat is frozen, it can be stored for six months without any problem.
5000pt;<em></em>
mso-font-kerning:1.
0000pt;">
0000pt;">
5000pt;<em></em>
mso-font-kerning:1.
0000pt;">Leftovers, except for leafy vegetables, are not recommended to be kept, and other leftovers can be stored in the refrigerator.
Keeping the food at room temperature for more than 2 hours may cause the rapid reproduction of microorganisms.
Therefore, the leftover food should be stored in the refrigerator in time, and it is safe to heat and cook it before eating.
0000pt;">Leftovers, except for leafy vegetables, are not recommended to be kept, and other leftovers can be stored in the refrigerator.
Keeping the food at room temperature for more than 2 hours may cause the rapid reproduction of microorganisms.
Therefore, the leftover food should be stored in the refrigerator in time, and it is safe to heat and cook it before eating.
Leftovers, except for leafy vegetables, are not recommended to be kept, and other leftovers can be stored in the refrigerator.
Keeping the food at room temperature for more than 2 hours may cause the rapid reproduction of microorganisms.
Therefore, the leftover food should be stored in the refrigerator in time, and it is safe to heat and cook it before eating.
5000pt;<em></em>
mso-font-kerning:1.
0000pt;">
0000pt;">
5000pt;<em></em>
mso-font-kerning:1.
0000pt;">Refrigerators are not safes.
If food is stored for a long time, it will lose nutrients and will gradually degenerate.
When using the refrigerator to store food, follow the principle of categorized storage and separate raw and cooked food.
Do not defrost the frozen food repeatedly, and clean the refrigerator regularly to add a guarantee to the family’s dietary safety.
0000pt;">Refrigerators are not safes.
If food is stored for a long time, it will lose nutrients and will gradually degenerate.
When using the refrigerator to store food, follow the principle of categorized storage and separate raw and cooked food.
Do not defrost the frozen food repeatedly, and clean the refrigerator regularly to add a guarantee to the family’s dietary safety.
Refrigerators are not safes.
If food is stored for a long time, it will lose nutrients and will gradually degenerate.
When using the refrigerator to store food, follow the principle of categorized storage and separate raw and cooked food.
Do not defrost the frozen food repeatedly, and clean the refrigerator regularly to add a guarantee to the safety of the family’s diet.
