Is it okay to store vegetables in the refrigerator for a long time?

　　Since the advent of refrigerators, people often go out to do shopping on weekends, then store the food in the refrigerator and enjoy it slowly. Under normal circumstances, the quality of cans, beverages, condiments, etc. can be preserved when stored at low temperatures of 0 to 4°C. Storing most fruits in the refrigerator can delay the onset of rot and wilting. But if you think that everything will be fine with a refrigerator, it is very dangerous to often store vegetables in the refrigerator for several days.

　　The biggest danger in vegetables comes from the nitrates in them. Nitrate itself is not toxic, but after storage for a period of time, due to the action of enzymes and bacteria, nitrate is reduced to nitrite, a toxic substance that combines with protein substances in the body, causing stomach cancer one of the important factors.

　　Fresh vegetables should be eaten as soon as possible after buying them. Leafy vegetables contain high levels of nitrates, so they should not be stored for long periods of time. If the vegetables you buy are not cooked on the same day, they should be put into fresh-keeping bags in time, tied and placed in the refrigerator for temporary storage. Meat dishes can be reheated multiple times, but vegetables should be eaten on the same day after cooking and do not reheat leftovers repeatedly. Any vegetables that have turned yellow and become water-soaked have very high nitrite content and must not be eaten.

　　In addition, foods such as bananas, fresh lychees, ham and chocolate should not be stored in the refrigerator for a long time. Because these things are more likely to become moldy and deteriorate at room temperature once they are taken out of the refrigerator and lose their original flavor.

　　Some people think that watermelon tastes cool and sweet after being chilled in the refrigerator. However, they don’t know that eating such watermelon regularly is good for them. healthy Harmful rather than helpful. Because after watermelons are refrigerated at low temperatures, the water in the pulp often forms ice crystals, which can irritate the throat and easily cause adverse reactions such as pharyngitis or toothache. Therefore, after buying the watermelon, put it in a cool place for a while before eating it. It is best to eat it all at once.