Be alert! 8 overnight foods that are most likely to be fatal

Introduction: Although our lives have improved, the Chinese people’s virtue of frugality and some bad eating habits can cause obstacles to health. For example, many overnight foods are very harmful to the body, so we might as well pay attention to them.

Although our lives have improved, the Chinese people’s virtue of frugality and some bad eating habits can cause obstacles to health. For example, many overnight foods are very harmful to the body, so we might as well pay attention to them.

1. Can eggs be eaten overnight?

Not necessarily! Because if the eggs are not fully cooked and the uncooked yolks are eaten overnight, if the eggs are not stored properly, the nutritious food will easily breed bacteria, which will be harmful to health, such as causing gastrointestinal discomfort, flatulence, etc. However, if the food (eggs) is fully cooked and properly sealed and stored at a low temperature (generally refrigerated temperature), it can generally be stored for 48 hours without any problem.

Only after the eggs are cooked for the first time, it is okay to cook them again overnight. This is the reason for tea eggs. You may not know that tea eggs are It is cooked twice. The first time is to cook it. The second time is to break the egg skin, add tea leaves and other accessories, and then cook it again, so the tea egg must be cooked. However, tea contains biological acid and alkali components, which will penetrate into the eggs when cooked and combine with the iron in the eggs; this combination is highly toxic to the stomach and will affect the nutrients over time. Digestion and absorption are not good for human health.

Some people also like to eat half-cooked eggs (the yolk is semi-liquid) and cannot be eaten overnight. Even if they are cooked the second time, do not eat them.

3. Can I drink boiled water overnight?

Boil tap water for 3 to 5 minutes. The content of harmful substances such as nitrite and chloride is the lowest, making it most suitable for people to drink.

Drink less boiled water overnight: Nitrite can form carcinogenic nitrosamines in the human body. Some experts have found that the nitrite content in boiled water is higher than that in raw water. Moreover, if water is repeatedly boiled for too long or for more than 24 hours, the nitrite content will increase significantly. After the boiling water was left for 24 hours, the nitrite content was 1.3 times that of when it was first boiled. Chinese residents have the habit of drinking boiled water. It is best to drink it when it is boiled or only drink the boiled water of the day. Also don’t drink water that has been boiled for too long.

4. Can I drink white fungus soup that has been left overnight?

Tremella soup is an advanced nutritional supplement, but if left overnight, the nutrients will be reduced and harmful components will be produced. Because both the Tremella fuciformis cultivated indoors and the Tremella fuciformis cultivated outdoors contain more nitrates, if they are left for a long time after being cooked, the nitrates will be reduced to nitrites under the decomposition of bacteria. When people drink this soup, nitrite naturally enters the blood circulation. The red blood cells in the blood contain hemoglobin, which can carry a large amount of oxygen for the body's needs. However, nitrous acid has the opposite effect, causing normal hemoglobin in the human body to oxidize into methemoglobin, losing the ability to carry oxygen, causing the human body to lack normal hematopoietic function!

5. Can you eat vegetables that have been left overnight?

Because some green leafy vegetables contain a lot of nitrates, if they are left for too long after being cooked, the nitrates will be reduced to nitrites under the decomposition of bacteria, which may cause cancer. It cannot be removed by heating.

Healthy way to eat: Generally, stem and leaf vegetables have the highest nitrate content, melons and vegetables have slightly lower levels, and roots and cauliflowers are in the middle. Therefore, if you buy different types of vegetables at the same time, you should eat stems and leaves first, such as Chinese cabbage, spinach, etc. If you plan to cook more dishes to eat hot the next day, you should try to cook less stem and leaf vegetables and choose melon vegetables.

6. Is overnight soup good for your health?

Cantonese people like to make soup. If they can’t finish the soup, they put it in the refrigerator and boil it before drinking it the next day. This overnight soup is not good for your health either! Healthy way to eat: The best way to preserve the soup is not to add seasonings such as salt to the soup base. After cooking the soup, use a clean spoon to scoop out what you want to drink that day. If you can't finish it, it's best to use a clay pot and store it in the refrigerator. . Because leftover soup is stored in aluminum or stainless steel pots for a long time, chemical reactions are prone to occur, so it should be placed in glass or ceramic vessels.

8. Do not eat braised rice noodles at home overnight

Both braised rice noodles and rice noodles are seasonal dishes that Shanghai residents like to eat, and many citizens also like to eat leftover braised rice noodles. Put it in the refrigerator "overnight", but this method has great food safety risks. To prevent food poisoning, do not eat braised food overnight in spring and summer. Bulk braised food must be eaten on the same day, not overnight. From a food safety perspective, this is unhygienic and it is best not to eat overnight food if possible. Food experts remind that even food placed in the refrigerator is not absolutely "safe". Molds and psychrotrophic bacteria are prone to breed in the refrigerator, which can easily cause cross-infection of food.