Tea ( Chinese “cha” in Beijing and Guangdong dialect, “te” in Amoy and “ttsay-e” in Taiwan ) is a drink obtained by brewing, brewing and / or insisting a leaf of tea bush, which is previously prepared in a special way. Tea is also called the tea bush leaf itself, processed and prepared for the preparation of the drink. This preparation includes preliminary drying ( drying ), twisting, more or less prolonged enzymatic oxidation, and final drying. Other operations are introduced into the process only for the production of certain types and varieties of tea. Sometimes the word "tea" is also used as the name of the tea bush - a species of plants of the genus Camellia of the Tea family; In the botanical scientific literature, the name Camellia sinensis ( Camellia sinensis ) is usually used for this species. Tea in the broad sense can be called any drink prepared by brewing previously prepared plant material. In the names of such drinks, as a rule, an explanation is added to the word "tea" that characterizes the raw materials used ( "herbal tea", "berry tea", "fruit tea" and so on ).
Tea today is one of the most famous and favorite drinks. And, perhaps, there is not a single person who has completely excluded tea from his menu. But there are a lot of questions about drinking tea. For example: how much daily tea is healthy? Is green tea trendy today useful for everyone? Is it true that tea is the best thirst quencher in hot weather. Let's figure it out!
- Original name:
- Country of Origin: PRC
- Posted by: Unknown
- Year of creation: III millennium BC e.
- Analogs: coffee
- Calories: 5 calories (black tea), 1 calorie (green tea), 21 calories (black tea and sugar)
All about tea
Tea is a drink from the leaves of a tea bush. In China, the unusual properties of these leaves were discovered a long time ago. And since then they have invented ever new ways of processing, preparing and consuming tea. And each people in China took what they liked, and adapted it to their own food and traditions. According to experts, tea leaves contain about three hundred ingredients, including proteins, fats, more than 10 types of vitamins, as well as tea phenol, thein and lipid sugars. Therefore, tea nourishes the body, regulates physiological processes and has a general healing effect. There is little caffeine in tea, but it is enough to invigorate a person and give him strength. In addition, tea is easy to prepare, economical and hygienic.
It turns out that tea can be drunk by everyone and in any quantities? Experts answer this question as follows: tea, subject to certain rules for its use, is useful to almost everyone. This phrase is the key. Note: firstly, subject to the rules of use, and secondly, to almost all, but not all!
First you need to understand the existing types of tea. More than 350 types of tea bushes grow in the world, and the number of currently produced tea varieties exceeds one thousand. According to the processing method, all teas are divided into the following main categories: Fermented tea, or red.
- Semi-fermented tea, or black. These two types of tea: red and black are the most common among us, we usually do not distinguish them and call \ "black tea \".
- Unfermented tea: green and white. \ "Green \" has recently become widespread in our country, but \ "white \" is familiar to a few.
Tea with additives of natural fragrant flowers, or the so-called \ "flower tea \". Note: in this case we are talking exclusively about natural supplements!
Why did we give this classification here? The fact is that the choice of teas should be approached individually. Teas of different varieties vary greatly in composition and, as a consequence of this, in their effects on the body.
Children can drink all sorts of tea, however, subject to a number of rules: you should not give them more than 2-3 small cups per day, you should not brew tea tightly and do not drink it in the evening. In addition, tea should be warm, not hot or cold.
In adolescence, green tea is especially beneficial. Red and black can also be drunk, but do not brew them tightly. Teenagers with an unstable psyche are very useful flower tea. It cleanses the liver and removes toxins, normalizes many age-related physiological processes. In general, experts recommend children and adolescents to drink weakly brewed tea, as well as rinse the tea with mouth.
In young and adulthood, all teas are very healthy. For women, for example, fermented red tea is especially recommended, and for those who want to lose weight - black, semi-fermented. Tea with peppermint is good for people with gastric diseases, and floral tea for those suffering from liver diseases. As for green tea, the content of vitamin C and tea phenol in it is much higher than in other types, therefore this tea has a much more pronounced antibacterial, anti-radiation and anti-sclerotic effect, it more effectively lowers blood sugar and improves blood composition. In addition, almost all flower teas are made on the basis of green, and have the same properties.
Elderly people, especially those suffering from constipation, strong green tea can be harmful, as it has a fixing effect. But red tea strengthens the stomach and is a good diuretic. Therefore, red tea is indispensable in old age.
What is tea good for?
Indeed, what is the use of tea, because it, like coffee, contains caffeine. It turns out that tea caffeine acts on the body for a longer time. At the same time, tea caffeine has a stimulating effect on the cardiovascular system, kidneys, and the digestive tract.
Black tea has P-vitamin activity, and, in addition, increases the absorption of vitamin C. Another black tea is useful in that it strengthens the walls of blood vessels and saturates the body with antioxidants - substances that protect cells from pathogens, aging and the effects of harmful environmental factors.
Due to its ability to destroy pathogenic bacteria, black tea eliminates bad breath. Therefore, smokers after a smoke break are recommended to rinse their mouth with cold tea.
Many experts believe that tea has a preventive effect against stroke - this is due to the fact that under the influence of tea, cerebral circulation increases, more oxygen enters the brain.
In addition, tea inhibits the formation of fat deposits on the inner surface of blood vessels, therefore, the risk of developing sclerosis, hypertension and cerebral blood clots is reduced.
The effects that black tea has are fully related to green. Only in green tea are they even more pronounced.
Green tea contains epigallocatechin galatta, a substance that is 100 times stronger than vitamin C and 25 times stronger than vitamin E, which protects the body’s cells from the harmful effects of cancer or cardiovascular disease.
Green tea has anti-aging properties and is effective for the hangover syndrome: it is worth drinking a few cups of green tea, and the hangover goes quickly and painlessly.
The main thing is to brew tea correctly
In order to take full advantage of the drink, you should know how to brew tea. So, for example, green tea can be brewed repeatedly, but preferably no more than five times. But black tea - no more than once. Moreover, it should be drunk within fifteen minutes after brewing. In black tea, the process of spontaneous oxidation of aromatic components, phenol, lipoids, and essential oils most intensively takes place.
The method, when a concentrated infusion of tea is first made, which is then diluted with boiling water as necessary, can harm the body. In addition to oxidation, a film is formed on the surface of the tea, which is dangerous for the human digestive system. Therefore, you should drink tea immediately after brewing.
Now let's move on to the rules of drinking tea. In fact, there are a lot of them, but they are all very simple and reasonable. So:
- Do not drink tea on an empty stomach, immediately before or immediately after a meal. It is best to drink it 20-30 minutes after eating.
- It is harmful to drink both roasting and cold tea: the optimum temperature of the tea is 50-60 ° C.
- Strong tea is unhealthy often: a high content of caffeine and thein in it can cause headaches and insomnia.
- You can not make tea for a long time. This significantly reduces the nutritional value of the drink.
- It is better not to practice multiple brewing tea. Usually, after the third or fourth brewing, little remains in the tea leaves, and harmful components begin to appear in the infusion.
- You can not drink medicine with tea. The Chinese say tea destroys medicine.
- Do not drink yesterday's tea: it not only loses vitamins, but also becomes an ideal breeding ground for bacteria.
As for the amount of tea drunk per day, experts recommend drinking no more than 4-5 cups of weak tea during the day. The exception, as we have said, are only children, the upper limit for which is 2-3 cups. If you prefer strong tea, then limit yourself to 2-3 cups. In general, experts make all calculations based on the fact that 3 grams of tea leaves fall on a cup. That is, no more than 5-10 grams of tea should be consumed per day.
Tea may be harmful
In addition to caffeine, tea contains theophylline, a substance that has a diuretic effect and stimulates the central nervous system. In addition, studies have shown that theophylline can inhibit the phosphoric acid compound, leading to increased production of stomach acid. The decisive factor is the strength of the tea and the number of tea leaves. The higher the strength, the more caffeine, theophylline and other substances in tea.
Another significant minus of strong tea is that it neutralizes and removes magnesium from the body. Meanwhile, it is magnesium that is responsible for the state of our nervous system. With its deficiency, the so-called chronic fatigue syndrome occurs with a typical general weakness and confusion in his thoughts. In addition, a lack of magnesium leads to weather dependence, nightmares, muscle tension and cramping. Therefore, tea lovers should definitely include foods rich in magnesium salts - apricots, peaches, cauliflower, nuts, bran, and legumes.
Tea can be harmful due to the presence of flavorings and colorings. In addition, hot tea burns internal organs, and as a result, painful changes in these organs can begin.
Zealous tea lovers may have problems with their teeth. Because of black tea, for example, the teeth turn yellow. And from green tea, if you drink more than 5 cups a day, the enamel on the teeth is destroyed.
You should also know that green tea has a fixing property, and therefore it is not worth drinking for people suffering from constipation. Green tea is contraindicated and hypotensive, as it lowers blood pressure.
It is not recommended to drink tea at high temperature, because tea, especially strong, already raises body temperature. And in no case should you drink tea with medicine, including multivitamins. With such a combination, a precipitate often appears, and as a result, the preparations are not absorbed by the body.
Categories of people whom experts recommend drinking less tea
Firstly, pregnant women. After all, tea contains a certain amount of caffeine, which, by stimulating the fetus, negatively affects its development. In addition, caffeine causes an increase in heart rate and increases urination, which increases the load on the heart and kidneys, and thus increases the likelihood of developing toxicosis
Secondly, ulcers. Although tea promotes digestion, moderation should be observed for those suffering from a stomach ulcer and duodenal ulcer, as well as increased acidity in the stomach. Ulcers are recommended to limit tea consumption by eliminating strong tea at all. They are best off drinking tea with milk and sugar.
Thirdly, people suffering from atherosclerosis and severe hypertension. Patients with a similar diagnosis should drink tea with caution, and during periods of exacerbation, generally abandon the use of red and strongly brewed tea.
Fourth, people who suffer from insomnia. Although there may be a variety of reasons for insomnia, you should not drink tea shortly before bedtime due to the stimulating effect of caffeine and aromatic substances. A cup of tea, especially strong tea, leads to a state of excitement before going to bed, and it becomes almost impossible to fall asleep.
Fifth, patients with high fever. It is generally accepted that strong hot tea quenches thirst well, and therefore is useful at elevated temperatures. But this is not so. Scientists have found that theophylline in tea increases body temperature. Theophylline also has a diuretic effect, and therefore it makes any antipyretic drugs ineffective or low-effective.
Note that the use of tea, like any other drink, is a purely individual process for everyone. Personally for me - for example, I tolerate well both green and black tea, strongly or slightly brewed. Follow all of the above rules and restrictions - unless, of course, you care about yourself and your health!