which foods can’t be eaten overnight? Different people give different answers. The most common suspects include, but are not limited to, overnight meals, overnight dishes, overnight water, overnight tea, overnight white fungus, overnight braised meat, etc. In fact, many foods can be eaten overnight as long as they are well preserved. Let’s have a look at it.
The reason why some foods can’t be eaten overnight is usually because they contain nitrite. But in fact, nitrite is not a terrible thing. It is very common in fruits and vegetables. In addition, many processed meats we usually eat also contain nitrite, which is mainly used for antisepsis and color protection. The red cooked beef, fried beef and other bright meat in the restaurant are also due to the addition of nitrite.
so nitrite is not terrible, it needs to be transformed into nitrosamine to become a carcinogen, and it needs many preconditions. And nitrite also need to eat a lot of will have an impact on the body, generally speaking, the content of nitrite in properly preserved overnight meals is relatively low, so there is no problem in general. But if it is stored in a place with high temperature, the bacteria are more active, and it is easy to breed harmful bacteria, which is another matter.
so the key to eating overnight meals and so on depends on the storage conditions
in fact, the answer to this question is not what food can’t be eaten overnight, but how to store it overnight.
but there are also some overnight leftovers that are easy to grow bacteria, such as soup, cold dishes and marinated dishes. It’s best not to eat them, because they are prone to bacterial growth and lead to diarrhea and other diseases. In general, if it is stored at room temperature for no more than 4 hours, and when the temperature is high, they can not be stored for more than 2 hours.
but if the leftovers are still hot, they can be kept in the refrigerator for a long time, enough to spend a night. Although it needs more electricity, it is safer. This is because bacteria grow fastest at 20-30 ℃, so it is necessary to cool them to cold storage as soon as possible. Generally speaking, cold storage at about 10 ℃ can effectively inhibit the growth of bacteria, cold storage effect is very good, overnight food can also be eaten.
but we don’t take it out in the morning. We must reheat it twice to kill many bacteria that grow in the evening. All in all, many overnight dishes can be eaten, but we should pay attention to the way and conditions of preservation.
Overnight food can not eat
overnight tremella soup is a kind of high-grade nutritional supplement, but once overnight, the nutrients will reduce and produce harmful ingredients. Because both indoor cultivation of Tremella fuciformis and field cultivation of basswood Tremella fuciformis contain more nitrate. After cooking, if it is put for a long time, under the decomposition of bacteria, nitrate will be reduced to nitrite.
people drink this soup, nitrous acid naturally into the blood circulation, red blood cells in the blood have hemoglobin, can carry a lot of oxygen for the body needs. But nitrous acid reacts to oxidize normal hemoglobin into methemoglobin in human body and lose the ability to carry oxygen, resulting in the lack of normal hematopoietic function in human body!
if the egg is not fully cooked, the unripe yolk can be eaten overnight. In the case of improper preservation, nutritious things are easy to breed bacteria, causing gastrointestinal discomfort and flatulence. However, if the eggs are well cooked and properly sealed at low temperature, there is generally no problem.
tea egg is usually boiled twice, the first time cooked, the second time will break the eggshell, add tea and other accessories to cook, so tea egg must be cooked. But those half cooked eggs, yolk is half liquid, can’t eat overnight.
overnight leafy vegetables
because some green leafy vegetables contain more nitrates, after cooking, if the time is too long, under the decomposition of bacteria, nitrates will be reduced to nitrite, which has carcinogenic effect and can not be removed by heating. Overnight meals are the most vulnerable to bacterial contamination, will multiply, it is easy to cause gastroenteritis, food poisoning. So, in summer, a lot of people often have diarrhea. Healthy eating: generally, the nitrate content of stem and leaf vegetables is the highest, melon vegetables is slightly lower, and rhizome and cauliflower are in the middle. Therefore, if you buy different kinds of vegetables at the same time, you should eat stem and leaf vegetables first, such as Chinese cabbage, spinach and so on. If you are going to make more vegetables and eat them hot the next day, you should try to make less stem and leaf vegetables and choose melon vegetables.
Cantonese like to make soup. They put the endless soup in the refrigerator and drink it after boiling the next day. Is this kind of overnight soup good for your health? The best way to keep it is not to put salt and other seasonings at the bottom of the soup. After cooking the soup, use a clean spoon to drink what you want to drink that day. If you can’t finish it, you’d better store it in the refrigerator with a tile pot. Because the remaining soup in aluminum pot, stainless steel pot for a long time, prone to chemical reaction, should be placed in glass or ceramic utensils.
fish, seafood, green leafy vegetables, salad, etc. should not be eaten overnight food.
fish and seafood are prone to produce protein degradation products overnight, which can damage liver and kidney functions. There are different amounts of nitrate in green leafy vegetables
. If the vegetables are cooked too much or put too long, not only the vegetables will turn yellow and taste bad, but also the nitrate will be reduced to toxic nitrite by bacteria, which has carcinogenic effect. Cold dishes are polluted when they are processed. Even if they are refrigerated, they are likely to have gone bad overnight. They should be prepared and eaten as you go.
family stewed grains
stewed grains and grains are popular seasonal dishes in Shanghai. Many people also like to put the leftover stewed grains in the refrigerator; Overnight & quot;, But this practice has a great potential for food safety. Prevent food poisoning. Don’t eat stewed grains overnight in spring and summer.
bulk bittern is to eat the same day, not overnight. From the perspective of food safety, it’s not hygienic. If possible, it’s better not to eat overnight junk. Food experts warn that even the food in the refrigerator is not absolute; Insurance;. It is easy to breed mold and psychrophilic bacteria in the refrigerator.
for a long time, most of the vitamins have been lost, and the protein and sugar in the tea soup will become the nourishment of bacteria and mold reproduction. Therefore, people usually think that overnight tea can not be drunk.
overnight boiled water
boiled tap water for 3-5 minutes, nitrite and chloride and other harmful substances content is the lowest, most suitable for people to drink.
drink less overnight boiled water: nitrite can form carcinogenic nitrosamine in human body. Some experts found that the nitrite content of boiled water is higher than that of raw water.
and repeatedly boiling for a long time or more than 24 hours, the content of nitrite increased significantly. The content of nitrite in boiling water was 1.3 times of that in boiling water after 24 hours.
Chinese residents have the habit of drinking boiled water. It’s better to drink it now or only the same day’s boiled water. Don’t drink boiled water that has been boiling for a long time.