Is making tea in cold water really healthy? Can you make tea with cold water

Is there any conclusive experimental data that confirms that cold brew tea is really better than hot brew tea?

At present, there are few studies on the health benefits of cold brew tea in China, but there have been studies on this abroad.

The report, published in the journal Food Composition and Analysis, was conducted by Italian researchers to compare the levels of polyphenols, catechins and antioxidant activity in tea soup under cold and hot brew conditions. In previous studies, the experimenters found that compared with black tea, green tea, and oolong tea, white tea had relatively higher antioxidant activity under cold water brewing conditions. In order to further clarify the difference between the release of different types and grades of white tea under hot and cold brewing conditions, this experiment was carried out.

The experimenters selected 5 kinds of Chinese white tea and 3 kinds of African white tea for control experiments, and soaked the tea leaves in hot water at 90 degrees Celsius for 7 minutes and 20 to 25 degrees Celsius in cold water at room temperature for 2 hours.

The researchers believe that the long time of soaking tea in room temperature water is conducive to the complete stretching and expansion of tea leaves, and the beneficial substances in tea are fully migrated to the tea soup, while room temperature water has no destructive effect on the cell structure of tea, which also ensures the integrity of the active ingredients in tea and obtains tea drinks with richer polyphenols. However, trials have also shown that the results of cold brew tea may not be as good as people expect when it comes to caffeine release. The caffeine content of cold brewed tea is higher than that of hot brewed tea, especially Bailongjing tea produced in China.

In addition, the conclusion of the trial also mentioned that in the comparison of hot and cold brew, the hot brew tea soup is lighter in color and the aroma is milder than that of cold brew tea.

Traditional tea is usually brewed with boiling water, but recently, a method of brewing tea with cold water has gradually come into everyone's attention. The benefits of cold brew tea are numerous, it is healthy and nutritious without affecting the quality of sleep. Authoritative experts have found that brewing tea with cold water can not only release a large amount of catechic acid from the leaves, but also reduce the caffeine component.

Brewed into delicious cold brew tea, concise and usable, suitable for busy salarymen, salarymen, teaching families, and motorists.

Benefits and disadvantages of making tea in cold water (1).

1. What is cold brew tea?

The traditional tea ceremony culture is mostly prepared with boiling water, which can not only enjoy the elegant aroma released by the leaves, but also taste the sweet and mellow taste of the soup, which is also a leisure hobby. To put it bluntly, cold brew tea, which is brewed with cold water, can be said to be a way of boiling tea that reverses the traditional style. Cold brew tea goes to Japan and is called "water cloud tea".

Use cold water to prepare green tea, oolong, green tea, etc., which can be put in the refrigerator for cold food or drunk at room temperature.

2. The benefits of making tea in cold water.

1. Convenient and fast.

When you go out for vacation, hiking, taking a train or a place where you can't boil water, you can make milk tea if you have mineral water or purified water. Refreshing and refreshing cold brew tea can not only quench thirst and quench heat, in addition, if there is pure water or boiled and refrigerated water, it can be brewed without reheating, so that brewing cold brew tea can save a lot of electromagnetic energy or liquefied gas and other electric energy. And the taste is more authentic and fresher than ordinary drinks.

In addition, in large, medium and small business negotiations, adding a bag of instant tea next to pure water can easily make cold brew tea that can not only awaken the mind, but also clear heat and remove fire.

Benefits and disadvantages of making tea in cold water (1).

2. Lowering blood lipids.

L-theanine is a general term for the polyphenols contained in the leaves, which has been confirmed to lower blood sugar, blood lipids, prevent hypertension, cerebral thrombosis, arteriosclerosis, cancer and other effects. Tea pigment is an air-oxidized polymer of theanine, and it can also have a certain preventive effect on diabetes, just like theanine. In addition, tea pigment also has the effect of reducing cholesterol, and also has a certain prevention and treatment effect on diabetes - cardiovascular and cerebrovascular diseases and arteriosclerosis.

When boiled water is prepared, the nucleotide substances with hypoglycemic effect in the leaves will be destroyed, and the boiled water is very easy to brew aminophylline and caffeine in tea, which is not conducive to lowering blood sugar. Because it takes a long time to boil tea, the sugar content in the leaves can be fully brewed, so that it has a good auxiliary effect for type 2 diabetics.

Benefits and disadvantages of making tea in cold water (1).

3. The disadvantages of making tea in cold water.

Brewing tea in cold water has no effect on the human body, only the color, aroma, taste, and shape of the tea are a little worse than boiling tea. The time to brew tea in cold water is also longer than that of hot small water. It is best to throw away the first cup of tea to prevent the chemical fertilizers, dust or harmful substances on the leaves from affecting the body.

Brewing tea in cold water is really healthy, making tea in cold water, vitamins and tea phenols and other nutrients in tea are not easy to destroy, and they are better preserved, so people can really maintain their health after drinking ice water to make tea.

I haven't tried ice water to make tea, and ice water should be able to brew the taste, not the taste of tea, it should be the taste of other things, tea can be brewed, the taste should be brewed with boiling water, and it should not be tea with ice water, as for whether ice water can make tea healthy, I don't know.

Drinking tea in cold water is not a health preservation, drinking tea can antioxidant, promote the decomposition of lipoenzymes, and improve sleep quality. However, it should not be drunk too much, as the tannic acid it contains will combine with iron in the body, which will affect the body's absorption of iron, cause iron deficiency anemia, and cause memory loss.

Brewing tea in cold water can not maintain health, first of all, cold water is not brewing the tea leaves, and the taste is not very pure, secondly, drinking cold water may cause gastrointestinal discomfort.

Brewing tea in cold water is indeed more healthy. Because making tea in cold water can release more catechins in the tea leaves, it can also reduce the caffeine content, which can play a role in quenching thirst, and can also help eliminate oiliness, which is conducive to reducing blood pressure and uric acid.

Brewing tea in cold water is not healthy, because the temperature of cold water is relatively low, the tea cannot be brewed, and its aroma cannot be emitted.

This depends on the tea leaves first, because some tea leaves can be soaked in cold water, but some tea leaves are soaked in boiling water, so they should be treated differently.

Making tea with cold water is a brewing method that has emerged in recent years. There is an idea that if you make tea in cold water, it will be less likely to dissolve the harmful substances in the tea. From this point of view, it is indeed more healthy.

However, there is no scientific evidence that the two methods of making tea actually compare.

I haven't heard that making tea in cold water can maintain health, this saying that drinking tea for health is aimed at the physique and the alternation of the four seasons, what kind of tea to drink for health, and cold water tea really has nothing to do with it.

Making tea in cold water is just a way to drink tea, but I don't think that making tea in cold water is healthy, after all, the tea leaves are dried, which contains a lot of dust and bacteria, and if it is not boiled at high temperatures, the body may produce diseases.

After 2 hours of cold boiled water soaking, the leaching amount of water-soluble components such as tannin and free catechins in the tea will exceed that of hot boiled water, and after 8 hours of cold boiled water soaking, the leaching amount of water-insoluble ester catechins and other components will also reach about 70 times.

The main benefits of making tea in cold water are as follows:1It has the effect of quenching thirst, and can also help the body eliminate oiliness, which is conducive to lowering blood pressure and uric acid.

2.Brewing tea in cold water does not reduce caffeine release. The brewed tea is not too bitter and can also reduce the burden on the gastrointestinal wall.

Increases the secretion of stomach acid. 3.Promote gastrointestinal peristalsis and relieve the symptoms of constipation.

It has anti-cancer and anti-cancer effects. 4.Drinking tea in cold water in the summer has the effect of cooling off the heat and can also help relieve fatigue.

The effect of making tea in ice water is actually not very good, and it is almost no different from making tea in hot water. I can't talk about health, but being able to drink tea is for sure.

It is said that making tea in cold water can brew the nutrients in the tea leaves, which should not allow the harmful substances in the tea to precipitate. ......Whether this statement is correct or not, I don't know. ......However, making tea in cold water is uncomfortable to drink, and it is easy to have stomach ......That's why I don't drink this tea. ......

aqui te amo。

Brewing tea in cold water is not healthy, and it is not healthy compared with making tea in hot water, it is just a gimmick promoted by merchants, without any scientific basis, don't believe it.

It is not necessary to make tea, preferably 75 to 85 degrees Celsius water is the best. Boiling water is easy to make the substances in chlorophyll green tea gray and age. And the temperature is too low, and the tea can't be brewed.

Is making tea in cold water really healthy? Brewing tea in cold water does not easily allow the harmful substances in the tea to dissolve. Moreover, after two hours of brewing tea in cold water, the amount of water-soluble components such as tannic acid and free catechins in the tea will exceed that of tea brewed in hot water.

Is making tea in cold water really healthy? This must be something impossible, and it is not suitable to make tea in cold water, you must use relatively hot boiling water to make tea, and boiling water is the best.

You and your friends make tea in cold water, and now there is a scientific proof that he is healthier, but the health regimen also varies from person to person, but it may be more suitable for most people.

If you make tea in cold water, it is not so healthy, because if you make tea in cold water, there is no way to activate some of the nutrients in the tea, and we still have to choose the right temperature to make tea.

There is no relevant data for this disease to tell us, cold water tea is healthy, generally drinking water is warm water to make tea is more healthy, good for the body, can prolong life, can anti-aging.

Cold-water brewed tea is generally green tea, and green tea is brewed at high temperature to dissolve more tea polyphenols and caffeine, which is prone to bitterness and astringency. When brewing in cold water, the amount of tea polyphenols and caffeine decreases, so that the amount of theanine and tea polysaccharides increases relatively, and the taste is relatively fresh. Especially for the more tender green tea,

When making tea in cold water, the trace elements in the tea leaves cannot be leached into the water. So making tea in cold water is not really a health preservation.

Is making tea in cold water really healthy? There is no scientific basis for the statement that cold water makes tea for health, and in daily life, no one makes tea like this, people use boiling water to make tea, so drinking hot tea is good for the stomach and intestines.

Cold water can be made into tea and drunk.

A recent study by the U.S. Department of Agriculture found that black tea contains more antioxidants than greens or carrots, which can effectively fight wrinkles and cancer. According to the latest Japanese research, people who drink more than two cups of black tea a day are 30% less likely to be attacked by the flu virus than those who do not drink it. Making tea with hot water will release more caffeine and tannins than making tea with cold water, leading to symptoms such as periodic headaches and insomnia, while making tea with cold boiled water can make the beneficial substances in it slowly dissolve without being destroyed.

Benefits of drinking hot water:

1、**。Hot water is great for maintaining a healthy metabolism, which is what you want if you want to get rid of a few kilograms. To do this, as an added bonus, hot water will help the body break down adipose tissue (aka body fat).

2. Assist with nasal and pharyngeal congestion. Drinking hot water is an excellent natural remedy for colds, coughs and sore throats. It dissolves phlegm and is also beneficial for removal from the respiratory tract. Thus, it can provide relief from a sore throat and also help to clear nasal congestion.

3. Menstrual cramps. Hot water can also help reduce menstrual cramps. The calming and soothing effect of the heat of the water on the abdominal muscles can ultimately help with spasms and spasms.

The above content refers to People's Daily Online - making tea with cold water and eating raw onions Ten eating habits determine the length of life.

Generally speaking, the longer the fermentation time, the higher the phosphorus content in the tea, and cold brew tea should try to choose low-fermented tea with low phosphorus content. In terms of the most common tea products, green tea has a low degree of fermentation, followed by oolong tea, and black tea, Tieguanyin, and Pu'er tea have a higher degree of fermentation.

Cold brewing tea is to soak the tea leaves in cold water at low temperature for about 10 hours, so that the fragrance and nutrients of the tea leaves are slowly released. Experiments have found that compared with the general hot water tea, the benefits of cold water tea are much more, the amount of catechins and polyphenols in the original hot tea can be effectively brewed, but the caffeine and tannic acid content are much lower. The caffeine in tea leaves is easily dissolved at high temperatures.

Excessive caffeine can cause the heart to beat faster, lose calcium, and some people will also experience periodic headaches, insomnia, etc., and will affect the absorption of calcium by the kidneys.

Because tea is a nutrient that has been accumulated over many years, you must use warm or hot water to make tea to fully brew the nutrients, so you can't use cold water to make tea.

Its practical cold water can also make tea, but since ancient times, people have been accustomed to making tea with hot water, believing that hot water can bring out the taste of tea leaves and the beneficial components such as catechins and minerals that are beneficial to the human body. In fact, the effect of making tea in cold water is not bad at all, as long as you have enough patience, the fragrance and nutrition of the tea will slowly seep out from the inside.