Can you drink tea tea overnight Can you drink tea tea overnight

In the past, there was a saying that overnight tea should not be drunk and that it was easy to get cancer if drunk, on the grounds that overnight tea contained secondary amines, which can be converted into carcinogens nitrosamines.

In fact, there is no scientific basis for this statement, because secondary amines are widely found in a variety of foods, especially in pickled products, the most abundant, take bread, usually contains 2mg kg of secondary amines, such as bread as a staple food, every day from bread to eat secondary amines have 1-.

By drinking tea, the secondary amine consumed from tea is only 0 of the staple bread, which can be seen to be insignificant. Moreover, secondary amines themselves are not carcinogens, and nitrates must be present to form nitrosamines and reach a certain order of magnitude to have carcinogenic effects. Drinking tea can obtain more tea polyphenols and vitamin C from tea, which can effectively prevent the synthesis of nitrosamines in the human body and are natural inhibitors of nitrosamines.

Therefore, drinking tea or overnight tea is not carcinogenic.

However, from the perspective of nutrition and hygiene, the tea soup is exposed to the air, and it is easy to breed spoilage microorganisms after being left for a long time, which makes the tea soup spoiled.

In addition, the tea soup is left for a long time, and the nutrients such as tea polyphenols and vitamin C are easily oxidized and reduced. Therefore, although overnight tea is harmless, it is generally better to drink it as it is brewed.

Overnight tea is rich in alcohols and fluoride, which can prevent capillary bleeding. If you suffer from oral bleeding, ** bleeding, sores and abscesses, you can use it to treat. If the problem is in the mouth and nose, you can wash it with overnight tea, rinse it or drink it.

**Patients with diseases can be washed, eyes with red silk or tears of unknown cause, can be washed with overnight tea, there is a good effect. After brushing your teeth in the morning or before eating, rinse a few sips of overnight tea can not only make your mouth fresh and refreshing, but also strengthen your teeth. Some Chinese medicine for rhinitis is also made with overnight tea.

In addition, washing your hair with overnight tea has the effect of relieving itching, hair growth and eliminating dandruff. Those with thinning eyebrows use a brush dipped in overnight tea every day to brush their eyebrows, and after three to five months, their eyebrows will be thick and shiny. Bad breath includes overnight tea to rinse the mouth to reduce odor.

Overnight tea can also remove oil stains and fishy smells.

Overnight tea generally refers to the tea soup brewed in the afternoon or evening of the first day and put it in the next morning, and the time is long after one night, which is called overnight tea. In the past, it was said that drinking overnight tea caused cancer, and experts in China's food industry gave a conclusion as early as the 80s that it would not cause cancer.

Normally, overnight tea can be used to rinse your mouth or take a few sips to moisten your throat the next morning, which is also the result of the practice of the older generation of tea drinkers. However, from a nutritional and hygienic point of view, the vitamin C and other nutrients in the tea soup will be reduced due to gradual oxidation after the tea field has been left for a long time. In addition, at high temperatures, left for a long time for more than a few days, the proteins and sugars in the tea are the medium of bacteria and molds, which are easy to breed molds and bacteria, resulting in the deterioration and corruption of the tea soup, and of course the spoiled tea soup cannot be drunk.

Whether overnight tea can be drunk depends on personal understanding of "overnight tea", generally speaking, from the perspective of nutrition or tasting, tea brewing and drinking should be brewed and drunk. Fresh overnight tea can be used to cough or drink a few sips is harmless, but there is no nutrition and taste at all, it should not be brewed again, the proverb says: "Tea can be drunk more, not more brewed".

Special uses for overnight tea.

It is well known that overnight tea cannot be drunk, but if it is poured out, it is a pity, and here are a few special uses of overnight tea.

1. Overnight tea is rich in acids and fluoride, which can not only prevent capillary bleeding, but also play a role in sterilization and anti-inflammatory.

2. If there is red silk in the eyes or tears for unknown reasons, it will have a good effect if you use overnight tea many times a day.

3. Wash your hair with overnight tea to treat itchy scalp.

4. Bad breath makes many people distressed, if you rinse your mouth three times a day with overnight tea, you can eliminate your troubles.

5. Use overnight tea to scrub the oil lead, basins, plates, bowls, painted furniture, etc.

They all said that they couldn't drink it, but I liked it the most, and I didn't die, I think the overnight tea tasted light, not very bitter, and I still liked it.

Can drinking tea overnight cause cancer.

ps: If it's a winter like this, it doesn't matter if the tea is 1 o'clock overnight, after the tea is opened, it quickly cools down to a few degrees Celsius, which is lower than in the refrigerator.

It is better not to drink.

It is harmful to the body.

Life kisses me with pain, but I want to repay it with a song.

You can drink it.

From a nutritional and hygienic point of view, the vitamins in overnight tea are greatly lost, other nutrients are also reduced, and the content of microorganisms in overnight tea will rise, especially in summer when the temperature is high; And a large amount of free tannic acid will be produced in overnight tea. Therefore, whether or not you can drink overnight tea depends on your personal situation and the degree of deterioration of the tea.

After eating seafood, you can wash your hands and brush the pot with overnight tea to remove the fishiness; Using overnight tea to scrub the oil pot, basin, etc., can remove greasy and greasy stains. Overnight tea contains nitrogen ions needed for plant growth, and watering the flowers can add nutrients and retain moisture in the soil, allowing the flowers to grow better. The brewed tea leaves are dried and lit with fire at dusk in summer to repel mosquitoes.

Tips for making tea

In the same concentration of tea soup, the tea soup brewed at high temperature is stronger, and the tea soup brewed at low temperature is milder. Tea leaves with high tenderness should be brewed at low temperature to avoid scalding the tea leaves; Coarse and old tea leaves can be brewed at high temperatures to bring out the aroma and taste of the tea. When tasting tea, you can smell its aroma first, and then you can drink it when the temperature of the tea soup drops slightly.

For the kung fu tea brewing method, the mastery of the steeping time needs to comprehensively consider factors such as the type, form and brewing times of the tea. As the number of brews increases, so does the time it takes to brew.

The above content reference: People's Daily Online-Overnight tea, in fact, is a good thing.

China's tea culture has a long history, and now many young people in our country are also very fond of drinking tea, especially in winter, drinking a cup of hot tea, the whole body will feel very warm. Drinking tea is a relatively long process, a pot of tea can be drunk for a long time, so many people are easy to forget after brewing the tea, and then the next morning after getting up, I don't know if the overnight tea can be drunk, but it feels a pity to pour it out. In fact, overnight tea is not only overnight tea, to be precise, it should only be left for too long tea, for example, the tea brewed in the morning and drunk in the evening and the tea brewed in the evening in the morning, these are all overnight tea.

After a long period of storage, the tea polyphenols in the tea will gradually oxidize and turn red, and the color of the tea water will become darker. Even brewed green tea will turn yellow or red after being left for a long time. This is because after a long period of storage, the tea produces oxides in it, but these oxides are basically not harmful to the human body.

Therefore, we often say that overnight tea can not be drunk, this is because after a long time of storage, the secondary amines in the tea will be converted into nitrosamines, nitrosamines are carcinogenic to the human body. <>

But in fact, this statement has not been scientifically verified so far, so it is not possible to accurately judge whether overnight tea is harmful to the human body, but the taste and taste of overnight tea will deteriorate, so it is best not to drink it. But many people think that it is a waste to pour out tea overnight, after all, there are thousands of catties of good quality tea. Therefore, you can also use overnight tea for other places, such as stopping bleeding.

Because there are a lot of acids in the overnight tea, which can prevent the capillary bleeding in the body, if you suffer from gingivitis, mouth ulcers, etc., you can achieve a certain relief effect through the overnight tea.

I think it's best not to drink overnight tea, if you drink it again, it is likely to cause stomach ulcers, and may even cause stomach cancer.

It is best not to drink overnight tea, there are many old people who say that overnight tea is rich in a lot of nutrients and is very good for the body, that is no scientific basis, tea after a long period of oxidation, the tea polyphenols in the body will be transformed into harmful substances to the human body, so the general tea is drunk and brewed, do not overnight.

Whether you can drink overnight tea or not, many people have discussed this topic, and there are reasons for whether you can drink it or not. Overnight tea refers to overnight tea, in the past, the utensils for making tea were not well sealed, which was easy to cause mosquitoes to fall or crawl in, in which protein and sugar are easy to become nutrients for bacteria, so it is best not to drink tea water for a long time.

But now the tea container is better closed, there is no such situation, overnight tea is rich in acids, can prevent capillary bleeding, such as stomatitis, eczema, gum bleeding and other can be used overnight tea**.

Therefore, whether you can drink overnight tea depends on your own situation, and there is no basis for not drinking it.

Tea cannot be drunk overnight.

1. Tea contains tea polyphenols, vitamins, catechins, amino acids and other components, antioxidant is one of the important effects of tea, tea exposed to the air for a long time, vitamin C, etc. are oxidized, tea polyphenols are oxidized into tea pigments, and the antioxidant effect will be weakened, especially green tea and white tea.

2. After the tea is left for a long time, tannic acid will be produced, and the tannic acid will be completely dissolved in the tea. After drinking in the morning, and then eating breakfast, tannic acid will interact with food to produce oxalic acid, and tannic acid and oxalic acid combine to cause chemical changes, which is easy to produce stones. At the same time, tannic acid also makes other nutrients more difficult to digest.

3. If the overnight tea is left for more than 24 hours, because the tea itself contains sugar and a small amount of protein, it will become moldy under suitable temperature and humidity conditions, produce bacteria and mold, and cause diarrhea. Therefore, tea that has been more than 24 hours old should not be drunk, especially in the summer when the temperature is high.

I like to brew a pot of tea and drink it slowly, but I often can't finish it, so I can only leave it overnight and drink it again the next day. Many people say that overnight tea can breed bacteria and produce nitrite so it can't be consumed, is this true?

As long as it is stored properly, overnight tea is okay to use. Many people worry about nitrite production, but they don't have to. CCTV reporters have done experiments to send a cup of tea brewed for 12 hours, a cup brewed for 24 hours, and a cup of freshly brewed tea to the Beijing Institute of Nutrition Source for testing.

The results showed that the nitrite content of the tea with 12 hours and 24 hours and the freshly brewed tea did not change significantly, and the highest content was only about 1 4 of the national drinking water standard.

As for the breeding of bacteria, the sugar and amino acid content in tea is very low, and it is not a good "culture medium" for bacteria, and if the lid is closed, it is difficult for bacteria in the air to fall into the teacup, so there is no need to worry too much.

So how long can tea generally sit without spoiling? How to store tea well?

The question of how long it will spoil is not conclusive, which is closely related to factors such as the preservation environment, the condition of the tea, and the variety of tea, but if there is a peculiar smell or obvious changes in color and texture, it is better not to drink it.

It is recommended to close the container with a lid or plastic wrap for unfinished tea, and then put it in the refrigerator for storage, 8 12 hours will generally not deteriorate, after all, one of the fashionable cold brew tea preparation methods is to add cold water and tea leaves to the container, and then put it in the refrigerator to soak and extract for 8 hours.

Can drinking tea overnight cause cancer.

Life kisses me with pain, but I want to repay it with a song.

Not only can not drink overnight tea, it is best not to drink the tea brewed in the morning in the summer, 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, (the general reasonable brewing times will not brew harmful substances) originally drinking tea is 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.

.Overnight tea is generally not drunk, but it can be drunk when you are thirsty, because tea is a fermented thing.

Life kisses me with pain, but I want to repay it with a song.

Overnight tea because the overnight tea time is too long, vitamins have been lost, and the proteins and sugars in the tea will become nutrients for bacteria and mold to multiply. From the perspective of nutrition and hygiene, it is better not to drink, and it is best to drink freshly. Of course, unspoiled overnight tea still has its role in medical treatment.

For example, overnight tea is rich in acids and fluoride, which can prevent capillary bleeding; If you suffer from stomatitis, tongue pain, warm rash, bleeding gums, ** bleeding, sores and abscesses, etc., you can be treated with overnight tea; If the eyes appear red or often tearful, wash the eyes with overnight tea several times a day, which can work wonders; Every morning before and after brushing your teeth or after eating, take a few sips of overnight tea, which can not only freshen your breath, but also have the effect of fixing your teeth.