Overnight dishes, overnight tea, overnight meat and overnight eggs, which one can't be eaten? That's the truth

The Chinese have the virtue of being diligent and thrifty. If they are reluctant to eat ecological leftovers at home, they will save them. When they eat again, they heat them up. This avoids food waste and is a cooking habit for many people.

We have always advocated thrift, not waste, but learn correctly, because everything should be viewed from a health perspective. While some overnight foods are safe to eat, others are more likely to cause lesions.

Overnight vegetables, overnight tea, overnight meat, and overnight eggs, which one should you not eat? The fact is this

——【Overnight Water】

Since the news of the cancer caused by nitrite in water overnight, people have become more afraid of cancer, stimulated in the morning, and even very careful about diet and various habits.

As the saying goes: "Talk about cancer discoloration". Is it really impossible to drink the water overnight? Someone has done professional research on this issue, but it's not as bad as everyone thinks.

Nitrite is produced in water overnight because bacteria in the air convert nitrate to nitrite under boiling conditions. Even mineral water with high nitrate content has 45 mg of magnesium to gold.

According to the analysis of normal drinking water of human body, it cannot reach the real carcinogenic amount, half of 200 mg will not be poisoned, not to mention that the nitrite in the water is even less than half of that of mineral water.

Nitrite is not terrible. The cause of cancer is the decomposition of depression protein, and the combination of amines produces nitroso compounds, which can lead to gastric and rectal cancer, but the daily intake of nitrite is limited, and it is not a carcinogenic problem at all.

Overnight water is safe to drink, but water preservation is critical. Try not to put it in an exposed space, put it in a thermos, which can reduce the growth of bacteria and the landing of dust, and avoid damage to your own health.

——【Overnight Tea】

Whether overnight tea can be drunk has always been a matter of concern. A CCTV reporter once went to a teahouse in Beijing to conduct related experiments. The reporter chose Longjing Pu'er tea and chrysanthemum tea three kinds of teas that people often drink for experiment.

On the first day of the experiment, the reporter brewed three kinds of tea from 9 am to 9 pm and left it for a while. At 9 am the next day, the reporter made three more cups of tea and left it for a while.

Lou Guozhu, a senior national tea reviewer, said: The overnight tea did not deteriorate after being placed for 12 or 24 hours, retaining the original taste. Overnight Pu-erh tea tastes better than tea brewed now.

The reporter also checked the nitrite in the tea, and an inspection report was issued by the Beijing Institute of Nutrient Sources. Whether it is now or overnight, the nitrite content is lower than 0.2mg/L; after placing Longjing tea for 24 hours, the nitrite content increases to 0.26mg/L, which still meets the drinking water hygiene standards.

Some people think that overnight tea cannot be drunk, because after drinking overnight tea, it will indeed bring a certain stimulation, especially in fasting state, it will cause gastrointestinal discomfort, it is recommended that you get up in the morning, if you feel thirsty or should give priority to Consider boiling water.

——【Overnight dish】

Whether overnight dishes can be eaten or not is a topic of great concern to the public. There are many kinds of overnight dishes. We should also analyze whether it can be eaten according to the actual situation.

①Green leafy vegetables

Soochow University School of Public Health conducted related research, mainly to study the content of nitrite in green leafy vegetables. The results showed that, although the nitrite content gradually increased over time, it was far from the standard required by the state. Green leafy vegetables are safe to eat.

②cold dishes

Studies have shown that there are many Enterobacteriaceae in salads. Since the bacteria are not eliminated by high temperature treatment, salad is more conducive to the reproduction of bacteria. Eat salad overnight, otherwise it is easy to cause food poisoning, and the gains outweigh the losses.

③ Leftovers left at room temperature

Storing leftovers in cupboards and other places is a habit of many households, but this placement habit can breed bacteria, because bacteria can multiply in 6 hours at room temperature of about 25°C, producing extremely high bacteria.

——【Overnight Meat】

①Raw meat

The meat itself contains less nitrate, and the meat is very safe. The main problem is that the difference between bacterial growth and vegetables is that raw meat carries more bacteria, which is more conducive to the reproduction of bacteria.

Most people will store the meat directly in the refrigerator after buying it, which will isolate the reproduction of some bacteria, so the meat must be thoroughly cooked before cooking to achieve a certain bactericidal effect.

②Processed meat

Some people especially like to eat stew, stew is delicious, but if you can't put a meal in the fridge, it can breed nitrites, of course, there's very little nitrite, I hope you have to keep it reasonable Stew is stored in the refrigerator.

• Overnight eggs

Eggs are a very popular high-protein food. More than 90% of the nutrients in eggs can be absorbed by the body. We've been emphasizing that everyone should eat hard-boiled eggs because it eliminates bacteria from eggs.

As for hard-boiled eggs, they can be eaten overnight. Even if it is stored for more than 48 hours, there will be no bacteria at all, but if you eat half-boiled eggs, it is difficult to say.

Some people especially like to eat hard-boiled eggs. Soft-boiled eggs are high in bacteria. Even overnight, it will aggravate abdominal pain and diarrhea. Therefore, try not to eat half-boiled eggs overnight.

Will overnight dishes have Helicobacter pylori?

Whether the overnight dish has Helicobacter pylori needs to be judged according to the situation. It mainly depends on the storage method, storage environment and other factors. When eating overnight dishes, pay attention to the activity of various microorganisms.

If the overnight vegetables are wrapped in plastic film and stored in a low temperature environment, there will usually not be a lot of bacteria or fungi to damage the overnight vegetables, and most of them are free of Helicobacter pylori contamination;

If an overnight dish is stored in a high temperature environment, it can easily become contaminated with a large number of bacteria or fungi. If exposed to Helicobacter pylori, it will become contaminated with Helicobacter pylori and remain in the overnight dish.

If you want to eat night dishes that need to be sterilized at high temperature, you can reheat them in the microwave. In the process of high temperature heating, Helicobacter pylori can be killed and the probability of Helicobacter pylori infection can be reduced.

Overnight dishes do not rule out the possibility of spoilage. If spoiled, they cannot be eaten after heating, which may cause gastrointestinal damage, may cause gastrointestinal inflammation, abdominal pain, diarrhea and other uncomfortable symptoms, and may also cause food poisoning, nausea, vomiting and other symptoms in severe cases. .

Extension - Can overnight meals be put in the fridge and eaten the next day?

Overnight dinner is mainly overnight vegetables, overnight meat, etc. Whether it can be eaten in the refrigerator the next day, the main concern is whether it will produce nitrite, then cause cancer, or cause gastrointestinal discomfort. Whether it is edible or not, it is necessary to consider the time in the refrigerator, the preservation method, and observe whether the food is spoiled.

If the overnight meal is sealed and stored in a refrigerator free of bacterial contamination, it can be eaten properly after being heated at high temperature the next day. If the overnight meal is kept in the refrigerator for more than 24 hours, it is not recommended to eat it.

Because the refrigerator only inhibits the reproduction rate of bacteria by cooling, but if the food is stored for too long, it will also deteriorate such as acid, stickiness, ectopic, etc. After eating, nausea, vomiting, diarrhea and other uncomfortable symptoms may occur. At the same time, too long storage time can also lead to poor food taste and nutritional damage.

But it's important to note that cold vegetables are not recommended for overnight storage. Since cold vegetables are contaminated by bacteria during production, it is not recommended to eat them even if they are refrigerated for no more than 24 hours to avoid food safety risks.

Some people have uncomfortable symptoms after dinner. If the symptoms are mild, they can drink more salt water, tea, rice soup, etc., to speed up metabolism and discharge, or take medicine under the guidance of a doctor to relieve symptoms such as vomiting and nausea. Severe symptoms should be immediately sent to the hospital for treatment such as gastric lavage, diarrhea, and enema, and corresponding infusion therapy is required.