1, causing food poisoning. Leftovers stored in the refrigerator will be contaminated by germs. If you take it out of the refrigerator and eat it directly without adequate heating, it may cause food poisoning, ranging from nausea, vomiting and diarrhea to severe shock.
2, it will cause malnutrition. There are few water-soluble vitamins such as vitamin C and B vitamins in the leftovers, and the nutrients almost disappear. If you often eat leftovers, it will lead to malnutrition and physical decline.
3, increase the possibility of cancer. Leftover food contains a high content of nitrite, and its content will gradually increase with the extension of storage date. Nitrite is a strong carcinogen. Eating leftovers often increases the risk of cancer.
4. Reduce people's appetite. After a period of time, the color and taste of leftovers will change, especially after several kinds of leftovers are mixed and heated, their taste will be greatly reduced, which will make people lose their appetite and enjoy eating.
Extended data:
Eating leftovers at four o'clock can prevent cancer.
1, return to the pot
Ginger garlic seafood and vinegar vegetables.
Besides reasonable storage, reheating is also the key to ensure health. Leftovers are put in the refrigerator, and must be returned to the pot at high temperature before eating. Because low temperature can only inhibit bacterial reproduction, it can't completely kill bacteria.
Different leftovers have different heating skills: among leftovers, fish, shrimp, crab and shellfish are the most intolerant. Even if it is stored at low temperature, it will produce bacteria and easily deteriorate. Therefore, it is best to add some seasonings such as wine, onion, ginger and garlic when heating, which can not only refresh the mind, but also have a certain bactericidal effect to prevent gastrointestinal discomfort.
2. Innovation
Rice is made into paste beef and becomes fluffy.
Compared with seafood and vegetables, meat is less likely to produce carcinogens such as nitrite, but it must be heated thoroughly, preferably for more than 10 minute or microwave 1 minute. When heating, you might as well add some vinegar. Meat is rich in minerals, which will overflow when heated. These substances will synthesize calcium acetate when they meet acetic acid, which is beneficial to the absorption and utilization of the human body.
Staple foods such as rice and steamed bread are best eaten the next day, because starchy foods are easy to breed staphylococci and aflatoxins. These harmful substances cannot be killed by high temperature heating. So, if you haven't finished eating for two days, don't eat any more, even if it doesn't look bad.
3. Principles
Do not leave any meat or vegetarian cold dishes.
When eating leftovers, people often worry about losing nutrition, which is harmful to health. From these two aspects, vegetarian dishes are not as reassuring as meat dishes.
As we all know, leftovers often have the problem of nitrite exceeding the standard. Nitrite itself is toxic. When it meets protein in the stomach, it will produce nitrosamines, a carcinogen. Statistics show that 80% of nitrite ingested by human body comes from vegetables. The content of nitrite in cooked vegetarian dishes will increase if they are kept in a high temperature place for a long time.
In addition, the nutrients in vegetarian dishes are more likely to be lost. This is because there are usually dozens of nutrients in a food, among which water-soluble vitamins, such as vitamins C and E, are afraid of heat. The nutritional value of vegetables is just reflected in the rich vitamins, so the nutrient loss of reheated vegetarian dishes is serious.
There are also some nutrients in food that are not too afraid of heat, such as minerals such as calcium and iron. People usually ingest these nutrients through meat dishes such as fish, so the loss of nutrients after heating will not be serious.
Step 4: Store.
Cover with plastic wrap, cool thoroughly and put in the refrigerator.
Therefore, no matter from the perspective of nutrition or safety, try not to eat leftovers. In addition, it should be reminded that it is best not to eat cold dish leftovers, whether it is vegetarian or vegetarian, because if it is not heated, the bacteria inside will not be easily killed, which may easily lead to diarrhea and other discomfort.
Eating at the last meal, eating at the next meal, has no freshness, and leftovers are often easy to stay. For the sake of health, the leftovers of the last meal must be eaten, or they must be resolutely thrown away. This requires giving full play to the imagination and carrying out a "big transformation of leftovers."
People's Daily Online-Can leftovers still be eaten? Teach you how to eat leftovers correctly
People's Daily Online-Leftovers can cause cancer. Reduce the harm of eating leftovers at four points.