In home life, food safety should not be underestimated, the most terrible thing in the family group is "overnight", parents and older generations always share in the family group "overnight food will cause cancer", "thousands of boiling water will cause cancer", "overnight tea can not be drunk" ......
Are these true or not, is it true that overnight water and overnight dishes cannot be eaten? However, some people have no problem eating it regularly, and some people get food poisoning after eating overnight dishes.
Can't drink water overnight?
Many people think that overnight water cannot be drunk because nitrite will be produced in overnight water, which is harmful to human health, but in fact, talking about toxicity without talking about dosage will only cause people to cause a misunderstanding.
In China's drinking water hygiene standards, the nitrite content is specified at ≤1 mg/L, whether it is bottled water or purified water, as long as the tap water is placed for three days, nitrite is still within the safe range, and it can be drunk with confidence.
What really affects overnight water is not the water itself, but the pollution caused by contact with the air.
So overnight water is drinkable, but it's best to cover itBottled water cannot be drunk directly after 3 days, it needs to be boiled, and tap water also needs to be boiled for drinking.
In the same way, overnight tea can also be drunk, and according to the experimental test, after 24 hours and 0 hours, the nitrite content is also within the qualified and safe range.
The overnight tea will change color because the tea polyphenols in it are oxidized, and the tannic acid will increase, and the taste will be poor, but it will not harm health.
Can't eat overnight dishes?
Who doesn't have leftovers, can they just throw them away?
In fact, it is very wasteful, it does not mean that all overnight dishes are not eaten, most meat dishes will not be harmful overnight at room temperature, and the nitrite content of leafy vegetables will be greatly increased overnight at room temperature, and it is best to eat them within 6 hours.
And if you put leafy vegetables in the refrigerator, the environment is basically about 24°C. After 0 hours of storage, the nitrite content has not changed much from when it was first out of the pot, and it is still within the safe range.
In other words, as long as most of the leftovers are sealed in the refrigerator and heated thoroughly overnight, there is no big problem.
其实隔夜水、隔夜菜并不可怕，对人体的伤害远远没有家族群说的那么吓人，真正不能隔夜的其实是这3样食物。
01. Soaking white fungus and fungus
When we eat white fungus, we need to soak it in cold water, but the soaking time should not be too long, and it should not be soaked for a long time, and it should not be soaked overnight.
Because the soaked fungus is easily contaminated by coconut poison pseudomonas cells when stored for a long time, it produces high-temperature resistant rice fermented acid toxin at room temperature.
If you eat it, poisoning will occur and rice enzyme acid is heat-resistant, boiling water at 120 °C and high-pressure steaming (0 °C) can not be destroyed, so once the toxic good fungus and white fungus continue to be at high temperature, it will still not destroy its toxicity, and people will vomit and diarrhea after eating it, and even direct food poisoning.
Generally speaking, the fungus can be cooked and eaten after soaking in cold water for 4~0 hours, and it is best not to exceed 0 hours.
02. Fermented rice noodles
In addition to soaked fungus and white fungus, there are also fermented rice flour products, such as glutinous rice noodle glutinous rice balls, hanging pulp baba,milletor sorghum rice flour products, potato vermicelli, sweet potato starch, etc.
Therefore, it is best not to leave fermented rice flour products overnight, otherwise it is easy to produce toxic rice fermented acid, of course, this is only a matter of probability, because the storage environment is humid or caused by improper storage, but for the sake of health, we still recommend that this kind of food do not stay overnight.
03. Soft-boiled eggs
There is also a soft-boiled egg, many people like to eat soft-boiled eggs, in fact, this is a kind of eggs that are not fully cooked, many eggs on the market are actually sterilized,
Especially free-range eggs, such eggs are likely to carry salmonella on the surface, and if not fully cooked, salmonella will multiply in large numbers at room temperature, and will only slowly but not stop multiplying in the refrigerator.
If you leave it overnight for too long, salmonella will reach a certain level, it will cause diarrhea and other situations, and even if it is very serious, it will cause food poisoning, so do not leave the eggs overnight. But hard-boiled eggs don't have to worry about.
Summary:
In fact, overnight dishes and overnight water are not terrible, the harm to the human body is not as everyone says, as long as it is stored properly to avoid breeding bacteria, the above 3 things that really can't be overnight may produce toxins, which is very harmful, so don't eat overnight.