What is overnight tea?

Overnight tea is tea that has been left overnight.

According to research, a tea leaf contains more than 300 kinds of nutrients, including protein, amino acids, tea polyphenols and vitamin C, etc., and overnight tea will cause the above nutrients to be contaminated by bacteria.

In fact, not only can not drink overnight tea, it is best not to drink the tea brewed in the summer morning to the afternoon, some people like to make a pot of tea to drink all day, so it is not good, not only the tea is easy to be infected with bacteria, and the tea brewing has a certain number of times, too many brewing times will brew some of the bad substances contained in the tea, (generally reasonable brewing times will not brew harmful substances) originally drink tea for health, do not become harmful because of improper tea drinking.

However, the unspoiled overnight tea has its own wonderful use in medical treatment, and the overnight tea contains rich acids, which can prevent capillary bleeding, such as stomatitis, tongue pain, warm rash, bleeding gums, sores and abscesses, etc., can be used overnight tea**. The eyes are often watery or bloodshot, and you can also wash your eyes with overnight tea several times a day. Before and after brushing your teeth in the morning or after meals, rinse a few sips of overnight tea to freshen your breath and fix your teeth.

However, Kuding tea can be left overnight. Because Kuding tea itself is not tea.

Tea served more than 8 hours is overnight tea.

The tea brewed the day before is considered an overnight tea after one night, and it is rich in carcinogens, so it is best not to drink these overnight teas often, and there will be a lot of bacteria in them.

I think that the tea that has been left overnight is the overnight tea, and the overnight tea really can't be drunk, because it is very damaging to our health, so we should pay special attention to this aspect.

Generally refers to the overnight tea placed for more than one night, simply put, 12 hours, we all know that whether it is water or tea as long as it is placed for too long is always a bit bad, tea is even more so, tea will produce a carcinogen after soaking between cities, that is, nitrosamines, so it is best not to drink overnight tea.

First of all, it is tea that has been steeped for a long time, such as more than 12 hours, or tea on the morning of the second day after the tea brewed in the evening, which is all overnight tea.

It is almost a dozen hours of tea leaves in a night, and this kind of tea is often not fresh enough, and it feels uncomfortable after drinking.

Tea that has been left for a day and a night, even if it is overnight tea, we can't drink such tea, and if we drink it, it will have an impact on our body.

If the tea in the cup is left to rest for more than 5 hours, such tea is considered an overnight tea, and such tea is not good for the body.

Overnight tea refers to overnight tea, in the old days, the container was not well sealed, which would cause poisonous insects to fall in or crawl through, and the proteins and sugars in the soup became nutrients for bacteria and mold to multiply. Most of the vitamins have been lost due to time, so they should not be consumed.

The tea has been left for a long time, and the main change is the further oxidation of the tea polyphenols and the darkening of the color. Because of the freshly brewed tea, theaflavin, the antioxidant substance in the tea, is soaked out, which is generally yellow-green. If it is left for a long time, theaflavins will gradually turn into thearubigin, and the color of the tea soup will also turn yellow-red, which is also the color deepening that people say.

A cup of clear and turquoise tea, especially if left for a long time in high temperatures, will lose its green color and increase the degree of yellowness. This is the oxidation product of the oxidation of tea polyphenols in tea to form yellow-red and reddish-brown, mainly theaflavin, thearubigin, theabrownin, etc. These products are non-toxic and do not cause harm to the human body.

The discovery and use of tea has a history of thousands of years, and according to research, there are written records of tea affairs with a history of more than 2,000 years. The Book of Tea written by Lu Yu in the Tang Dynasty is the earliest, most complete and most comprehensive tea monograph existing in China and even in the world, and is known as the "Encyclopedia of Tea". Nowadays, the "footprint" of tea has spread all over the world, and it has become a popular green drink.

So some people say that drinking overnight tea can cause cancer, is it true?

Overnight tea generally refers to tea leaves that have been steeped for more than 12 hours, or left on hold overnight. The main reason why some people say that drinking overnight tea causes cancer is that overnight tea produces a strong carcinogen: nitrosamines.

Nitrosamines are one of the important chemical carcinogens and one of the four major food contaminants. Nitrosamines are found in food, cosmetics, beer, and cigarettes. Especially in smoked food, there are a lot of nitrosamines, and when smoked food is ingested with wine, the harm of nitrosamines to human health will increase exponentially.

Nitrite, nitrate and amines, which are the basic substances for the formation of nitrosamines, are ubiquitous in food, for example, the average nitrite content in vegetables is about 4 mg kg, meat is about 3 mg kg, eggs are about 5 mg kg, and so on.

In people's daily diet, most of the nitrite is excreted in the urine like a "passerby" in the human body, and it will only be converted into nitrosamines under certain conditions. Therefore, under normal conditions, nitrite in the diet will not cause harm to human health, only excessive intake and lack of vitamin C in the body can cause harm to the human body. Tea itself is rich in vitamin C and tea polyphenols, which in turn become a natural inhibitor of nitrosamine synthesis.

Therefore, there is no scientific basis for the carcinogenicity of overnight tea. However, from a nutritional and hygiene point of view, many nutrients in overnight tea are lost, and microbial content increases. If deterioration occurs in some cases, it can also cause potential sexual harm due to the individual's physical condition.

Can drinking tea overnight cause cancer.

Overnight tea usually means that you brew the rest of the tea on the first day, and put it on the second day to be considered overnight tea, of course, the tea that is put in the early morning of the next day at more than 10 o'clock in the evening is not considered overnight tea, and it must be about 10 hours apart.

A pot of tea for one night doesn't count, because it's tea that still needs to be heated, so it doesn't count. As I said, the overnight tea is the water that has been brewed in the tea leaves, and it has already reached the stomach. Even after a night, the overnight is tea, not tea

Look at the color and smell the taste, first, there is no sourness, and secondly, the original color of the color deepens or becomes reddish-brown, or loses the green color and becomes yellow-red, reddish-brown, etc., which can be said to be overnight tea.

I've talked to you many times about "overnight tea" and "overnight water". Many people say that overnight tea should not be drunk, otherwise it will bring harm to people's health. When it comes to the root cause, it is mainly due to the fact that overnight tea is easy to breed more nitrite in the process of placing it, you went to work at nine o'clock to make a cup of tea, and then you were busy with work, and you forgot to drink this cup of tea.

I didn't remember it until I got off work, but it had been sitting for more than 6 hours. Strictly speaking, this is a cup of tea with the nature of "overnight tea".

<> main concern is that overnight tea will produce nitrite, but in fact, after the tea has been brewed for a long time, the nitrite content is also very small, which is not enough to cause any harm to the human body. However, after excluding nitrite, the quality of overnight tea is not easy to guarantee. Tea is the most exquisite, freshly brewed and drunk, blowing and drinking.

In the past, when we had a temple fair in Yangquan Village, Shanxi, the first afternoon came to the relatives to talk about the split, and first brewed a bowl of tea for the relatives. Use a small tea magnetic bowl with a tea bowl lid and a tea bowl holder underneath to brew it.

It says that overnight tea contains a lot of nitrites, which will cause cancer when drunk. CCTV has specially evaluated overnight tea, as long as it is placed in a suitable environment, whether the tea is placed for 12 hours, or 24 hours, this question is a bit weird, even if the tea is made to drink, it is generally often or good to drink tea, you say that you make tea or not, not overnight, and then study whether the overnight tea can be drunk? Interesting?

Again, it's coming.

Nitrite, bacteria, tea will be thick, etc., in fact, there are some unfounded worries, nitrite is much higher than tea is cured meat, pickles and other pickled smoked food, just like those who are nitpicky about pesticide residues in tea, the color is deeper, this is because the tea polyphenols in the tea and the air residue are in contact with oxidation, producing yellow-red, reddish-brown oxides, the main components of these oxides are theaflavin, thearubigin, theabrownin, these products are non-toxic, harmless to the human body.

In my opinion, you can't drink it, and try not to drink it overnight, no matter what kind of thing. I always feel that there will be certain harmful substances in the overnight things.

Overnight tea is not allowed to drink, if you drink overnight tea, it will only cause great harm to your body, and it will also have an impact on our health.

You can't drink it because after these teas are overnight, some toxic substances will be produced, and then it will also affect people's stomach.

Of course, you can drink it, but try to drink it sparingly or not at all, because there is no need to take the risk.

In fact, it is not allowed to drink, because after the overnight, there are still some substances that are not good for the body in these teas, so it is best not to drink them.

It is not allowed to drink. It's not good for your health to drink, and since you've been left overnight, there are already a lot of bacteria in the water.

Overnight tea cannot be drunk because overnight tea has been left for a long time and a lot of bacteria are produced, so overnight tea cannot be drunk.

I can drink it, and I can have a quick laxative after drinking the tea overnight, and I don't feel uncomfortable when I drink it regularly.