It is said that tea is a healthy drink, mainly because it contains many nutrients needed by the human body.
According to modern scientific research, the vast majority of tea is organic, with a content as high as 93%~96.5%. These organic substances include amino acids, protein, carbohydrates, alkaloids, tea polyphenols and vitamins. Among them, 20%~30% is leaf protein, and 1.5%~4% is free amino acid. There are more than 20 kinds, but most of them are amino acids needed by human body.
Tea contains 3.5%~7% inorganic matter. These inorganic substances are all mineral elements needed by human body, including 27 kinds of calcium, iron, magnesium, zinc and manganese. These minerals are also needed by human metabolism and are indispensable.
It is precisely because there are a variety of nutrients that tea looks so healthy and drinks tea so healthy. Drinking more tea when you have nothing to do is not only to solve the thirst problem and replenish water, but also to promote health.
A normal adult needs to replenish 2000~2500 ml of water every day. Through diet, you can get 600~800 ml every day, and the rest needs to be obtained by drinking water or drinking tea. If you don't replenish enough water every day, it will affect your metabolism and lead to sub-health in the long run.
If you want to be healthier, you need to add more water. Although friends who love tea can't completely replace the water needed by the human body with tea, most of them can really replenish water. A person who drinks about 1500ml of tea every day can basically meet the needs of the body.
Take a 300 ml glass as an example, you need to drink 5 cups of tea every day. If you brew green tea, if you put 3-4 grams of tea leaves at a time, you will probably need 10- 12 grams of tea leaves. If you are brewing fermented tea, the amount of tea is 7~8 grams each time, which is about 15 grams of tea. Because fermented tea is brewed many times, many of them can be brewed 10 times or more.
Of course, everyone's tea drinking habits, drinking methods, exercise, water demand and eating habits are different, and the tea they drink every day will be more or less. But from a health point of view, every time you make tea, the tea soup should not be too strong, and the amount of tea should be controlled as much as possible within a reasonable range. Drink more light tea and less strong tea, which is healthier.
Some tea lovers like to make tea twice before changing it. Some tea lovers don't change tea all day to avoid waste. Neither of these methods may be appropriate.
How many times can a tea be brewed? There is no immutable rule, but it is determined by drinking habits, tea types, brewing methods and other factors.
For example, a cup of green tea, if brewed in a straight cup, is only brewed three times. If you use the method of rapid separation of tea soup with cover, it can be appropriately extended to more than 5 bubbles.
Pu 'er tea, which is very resistant to foam, is often brewed for more than 10 times, and the flavor and aroma concentration of tea soup are still within the drinkable range.
From the point of view of nutrient precipitation, no matter what kind of tea, the first two bubbles can precipitate most of it. Especially for unfermented green tea and slightly fermented yellow tea, after brewing 15 seconds, more than 90% of the essence in tea soup will be dissolved in water. This is also the reason why green tea and yellow tea are not resistant to foaming.
The older the tea leaves are, the higher the bubble resistance is, and the more tender the tea leaves are, the lower the bubble resistance is. Before the Ming dynasty, the top green tea was mostly made of tender buds, which could only be brewed for 2~3 times, leaving only a faint scent of water. Fermented tea made of mature raw materials, such as oolong tea and black tea, can be brewed repeatedly for more than 7 times.
Therefore, to see how many times a tea can be brewed, it depends on the tea. As for how much tea you drink a day is healthier, it also needs to be decided according to your physical condition. Try to drink light tea when drinking tea, drink less strong tea, and drink less tea before going to bed and on an empty stomach, which is healthier.