Many people like to make tea in their daily lives, and the tea that they often can't finish will be left overnight before they continue to eat. But recently I heard that drinking overnight tea is bad for your health. So, why not drink overnight tea? What must not be eaten overnight?

1. Why can't I have overnight tea?

1. Tea contains tea polyphenols, which are easily oxidized into brown colloid-tea rust in air and water. Tea rust contains picks, lead, iron, arsenic, mercury and other substances. The tea leaves that have not been drunk or left in the cup for a long time, such as overnight tea, are exposed to the air for a longer time, and the more tea polyphenols are oxidized into tea rust. Tea rust enters the human body, combines with protein, fat and vitamins in food, and precipitates, which hinders the absorption and digestion of nutrients.

2. Once these oxidants enter the human body, they will also cause inflammation, ulcer, necrosis and other diseases in organs such as kidney, liver and stomach. Therefore, overnight tea should not be drunk, and tea sets should be scrubbed frequently.

3, the summer temperature is high, tea is easy to rancidity and taste, if put on hold for more than 24 hours, it is best not to drink, otherwise it will cause diarrhea.

4, overnight tea because of too long time, most of the vitamins have been lost, as well as protein, sugar and so on. Tea is not suitable for drinking because it contains nutrients that can breed bacteria and molds.

Why can't you drink overnight tea?

Second, remember not to eat these overnight foods again.

1, green leafy vegetables are the most dangerous overnight.

Usually, the nitrate content of stem and leaf vegetables is the highest, melon vegetables are slightly lower, and roots and cauliflower are in the middle. Therefore, if you buy a lot of vegetables at the same time, you should eat leafy vegetables, such as Chinese cabbage and spinach. If you are going to cook more vegetables and eat them hot the next day, try to make fewer stem and leaf vegetables and choose melons.

2. Overnight seafood damages liver and kidney.

Seafood such as crab, fish and shrimp will produce protein degradation products overnight, which will damage liver and kidney functions. If you really buy too much, you can put raw seafood in a fresh-keeping bag or box, freeze it in the refrigerator and cook it next time.

3. Half-cooked eggs are easy to cause diseases.

Many people like to eat half-cooked eggs, but this kind of eggs is not completely sterilized, and the eggs are rich in nutrition, which is particularly easy to breed bacteria and will be dangerous to eat. If the eggs are cooked and well preserved under low temperature sealing, it is no problem to eat them overnight.

4, tremella mushrooms should be cautious

Whether it is wild or cultivated tremella, mushrooms, etc. It is easy to leave a lot of nitrate. If you leave it for a long time, you can only reluctantly throw it away.

Don't put the soup in a metal container.

Boiling soup takes time and effort. People often cook a large pot and eat it for several days. If the leftover soup is left in aluminum pot and iron pot for a long time, it will precipitate substances harmful to human body. The best way to preserve soup is not to put seasoning such as salt in the soup. After the soup is cooked, put out what you want to drink that day with a clean spoon, and it is best to store it in the refrigerator with a clay pot or a fresh-keeping box.

6. The rotten pot-stewed vegetables at home will not last overnight.

Don't eat bad pot-stewed vegetables overnight in spring and summer. Bulk braised pork should be eaten on the same day, not overnight. Food experts warn that even the food in the refrigerator is not absolutely "safe". Refrigerators are prone to mold and psychrophilic bacteria. If possible, it is best not to eat bad goods overnight.

7. Salad will be poisoned overnight.

Cold salad made of all kinds of vegetables, dried fruits and vinegar is easy to produce mold and may cause food poisoning if it is put in the refrigerator overnight.

8. Never drink overnight tea.

After staying overnight for a long time, most of the vitamins are lost, and the protein and sugar in the tea soup will become nutrients for bacteria and mold. So people usually think that overnight tea can't be drunk.

Third, how to eat leftovers overnight?

Leftover pancakes

Ingredients: 2 eggs, a bowl of leftovers, 1 slice of bacon or ham sausage (diced), a little chopped green onion, a little salt, a tablespoon of starch, seasoning (powder), (spiced powder, thirteen spices, curry powder, hot sauce).

Mix all the ingredients with rice, and add appropriate amount of salt and seasoning powder (spiced powder, thirteen spices, curry powder) according to your own taste. If you like the original flavor, you can add no seasoning powder.

Heat oil in the frying pan, dough the rice, put it in the pan and press it into cakes, and fry until both sides are golden.

Fried leftovers with soy sauce

Ingredients: leftovers, onions, eggs, soy sauce (soy sauce), cooking wine, oil consumption, sugar.

A big bowl of leftovers, mix well with two or three spoonfuls of soy sauce, a little cooking wine, a little sugar and a little oil. After mixing well, observe the color according to the cover of this recipe, and decide whether to add more sauce or rice according to the color. Beat the eggs well and set aside.

Fry in a hot pan, pour a little oil, pour in eggs and fry quickly for later use. Pour in a little oil and stir-fry chopped green onion until fragrant. Pour in the mixed rice and stir well. Pour the eggs into the pot, stir well, taste, and finally add a little oyster sauce to the pot.

Leftover pizza

Ingredients: leftovers 1 bowl, 2 eggs, 3 cherry tomatoes, a little corn, a little green beans, a little salt, a little pepper, a little mozzarella cheese, bacon 1 slice, a little onion and a little vegetable oil.

Prepare the ingredients for later use, first blanch the corn kernels and green beans.

Dice bacon, mix with corn and green beans, add appropriate amount of mozzarella cheese, pepper and salt, put on disposable gloves and grab evenly. If it is dry, add some egg liquid.

After the electric baking pan is preheated, pour in a little oil.

Knead the mixed rice into a ball and put it in an electric baking pan.

Grind the rice balls into rice cakes with a spoon, and then beat in an egg.

Spread the sliced cherry tomatoes, sprinkle with chopped green onion, corn kernels and green beans, and finally sprinkle with a layer of mozzarella cheese strips. Fry for a while until the rice cake is crisp and ready to smoke cheese.

If you like other flavors, you can also sprinkle some other flavors, such as Chili, and then you can eat.

Fourth, the harm of eating leftovers often

1, cancer risk

With the increase of the storage time of leftovers, the nitrate content in meals is also increasing, and nitrite is a strong carcinogen. If you often eat this kind of leftovers, it is easy to increase the incidence of various cancers.

2. Food poisoning

Because the leftovers have been left for a while, there will be a lot of bacterial pollution. If eaten directly or after a little heating, it will lead to different degrees of poisoning, and patients will have symptoms such as fever, vomiting and diarrhea, or even more serious.

3. Malnutrition

Ordinary rice will contain different nutrients, but after repeated heating, the vitamins in food will continue to decrease until they disappear. Regular consumption of this food will make people malnourished and harmful to their health.

4, leading to gastrointestinal diseases

The starch in rice will be decomposed and absorbed by intestinal mucosa after entering the small intestine, but it will be "gelatinized" after being heated above 60 degrees Celsius, aged after being cooled, and will not return to "gelatinized" molecules after being heated again, which will greatly reduce the hydrolysis and digestion ability of starch, and will lead to indigestion and some gastrointestinal diseases after long-term consumption.

5. Loss of appetite

Leftovers are much worse than fresh rice in taste and color. Moreover, the repeatedly fried food is soft and rotten, and it really has no appetite, which will reduce people's appetite and thus lose the fun of eating.