Composition of tea
What is tea? It is a drink that is created in a certain way from a tea bush, tea leaves grown in various regions of our beautiful world by special technologies.
Probably most people do not know the exactcomposition of tea. Everyone knows that tea is a plant. Its exact name is a tea bush. Ways of processing it give us different varieties and tastes. I would like to understand what is useful in tea, as well as harmful. What is its chemical composition, what is included in green and black teas? Let's start in order. The first thing I would like to discuss is useful substances in any tea.
Useful tea substances
First, the tea contains tannins(tannins), which strengthen the capillaries and lower the pressure. Also, tannins contribute to the activity of vitamin C. The second is the essential oils found in the composition, they give a pleasant aroma and a unique emotional mood. The third is alkaloids. Among them - theine - caffeine combined with tannins. Caffeine helps improve thinking and brain activity. In addition to caffeine, tea contains amino acids and proteins. The greatest amount of proteins is found in green tea. Of course, tea contains vitamins. The main vitamin P, also in tea are vitamins C, A, E, K. Well, the last is mineral substances, they include calcium, fluorine, iodine, sodium, copper, magnesium, gold, manganese, silicon. There are organic acids that impart different shades of taste, pectin substances that keep tea from spoiling.
So we examined the useful properties of tea, now we need to discuss what harmful substances are contained in tea.
Harmful substances of tea
The greatest harm is caused by brewed tea,because it produces a lot of caffeine. It can badly affect the heart, especially the heart of a person with hypertension. Also, frequent use of strong tea can cause constipation. It is proved that strong tea badly affects the skin and complexion, can cause insomnia, dizziness, blurred vision, nervous disorders. The content of theophylline in tea has a diuretic effect. In addition, it suppresses phosphoric acid compounds, which can cause an excess of stomach acid. The recommended daily intake of tea is no more than 5 cups a day. Here, probably, and all on the topic of harmful substances in tea. The most important thing is to drink tea in moderation and not to brew it too hard. The greatest amount of harmful substances is found in strong tea. I would also like to add that you should not use long brewed tea, and also use tea bags several times. A large number of microbes appear in them.
What is the chemical composition of tea?
Let's discuss the full composition of the tea. As it seems at first glance, there is nothing special about it. But its composition is not so small. In the freshly cut sheet of tea there are about 9 chemical components. They include polyphenols, protides, alkaloids, glucides, organic acids, lipids, mineral salts, chlorophyll and volatile substances. The exact amount of substances and composition depends on the type of tea, the place of growth, climate, soil and other characteristics. After collection, tea leaves are further processed, which changes the chemical composition of the tea. Some substances become more, some - less.
What distinguishes black tea from green tea
Let's note the main differences of black tea from green. The first is a noticeable difference in color, the name speaks for itself. One tea is green in color, the other is black. Black tea badly affects the color of teeth, they darken. There is no such effect from green. Green and black teas differ in taste. Green tea contains more useful substances than black tea. It is a powerful antioxidant. It is advisable to drink at least one cup of green tea a day, it will bring great health benefits. Green tea can be used to treat cancer, it contains catechin and vitamin C. It also fights against viruses, microbes and inflammations. Various additives in this tea give their positive effect. For example, green tea with mint calms. It is often also not recommended to use it because excessive consumption has a diuretic effect, flushes calcium out of the body, causes sleep disturbance. The recommended dose of consumption is no more than three cups a day. It is best to alternate between green and black teas. For example, in the morning they drank a cup of black tea, and for lunch - a green.
Now let's start the pluses of black tea and itsdifferences from green. Black tea improves digestion, relieves fatigue, cheers up. Black tea can be consumed by pregnant women. Green tea is not recommended to drink, because it harms both mother and future child. A baby can be born with a small weight. Differences in green and black teas are significant. It seems only one thing - each of them perfectly quenches thirst.
Varieties of black and green teas
Let's talk about grades. There are a lot of kinds of tea, they are ordinary, but come with different additives. Basically, tea differs by name, it depends on where this tea is harvested. Also, the teas are powdery, medium-leafed, large-leafed and granulated. They are Indian, Chinese, Ceylon, English, and others. Each person chooses the kind of tea that he likes best, it is worth trying each of them.
The varieties of green tea are not so large,as black. Basically, green tea is Chinese. The grades of green tea differ with its flavor additives. Sometimes green tea with melissa, jasmine, mint, etc. Any additive gives a unique taste. It is worth trying each of them.
History of tea
Finally, let's talk about the history of tea. China is the birthplace of tea and the surrounding areas. Tea was already known in 220-280. Cultivate it as a culture began in 350 AD. In Russia, tea was used in the 17th century. At that time, tea was very expensive. Few could afford it. For a long time he was drunk only in Moscow. In the 19th century, tea was sold everywhere, tea was opened, tea etiquette appeared. The main role was played by the appearance of the samovar, it began to be considered the main source of Russian tea feast. Now almost every person does not imagine his life without tea. We drink tea at any time of the day, whoever likes it. And the abundance of varieties gives us a great opportunity to choose.
This concludes the conversation about tea. In this article, we touched on all the important questions regarding this drink. Now we know about the grades of tea, also about what tea consists of, about the history of its appearance, and also about the harmful and beneficial properties of tea. Have a nice and useful tea party!