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Black tea is fermented and roasted, and during fermentation, the tea leaves turn into red oxides under the action of oxidases, becoming black tea. In addition to containing a variety of water-soluble vitamins, black tea is also rich in trace element potassium, and 70% of the potassium can be dissolved in the tea after brewing. Potassium has the effect of enhancing blood circulation in the heart and can reduce the consumption of calcium in the body.
Because the manganese contained in black tea is one of the indispensable elements of bone structure, drinking black tea often is also beneficial to bone strength. According to foreign sources, regular drinking of black tea also has the effect of preventing and treating influenza, stroke and cancer. Studies have shown that because black tea contains a flavonoid compound that acts like an antioxidant, it protects against stroke and heart disease.
A recent study in the United States shows that people who drink a cup of black tea a day have a 40% lower risk of heart disease than those who do not drink tea. Disease prevention:
Black tea has strong antibacterial power, and rinsing your mouth with black tea can prevent colds caused by filtration viruses, prevent tooth decay and food poisoning, and reduce blood sugar levels and high blood pressure. U.S. studies have found that black tea gargling can prevent tooth decay * Helps digestion * Eliminates edema * Lowers blood sugar and high blood pressure * Eliminates bad breath * Prevents tooth decay Drinking black tea has many benefits Improve blood vessel function and support health It may not be news that drinking black tea can help prevent fatal diseases such as cardiovascular disease, stroke and cancer, but a recent study has finally found that black tea can improve the body's blood vessel function and has significant health benefits. Black tea is a very popular beverage around the world, and studies have found that drinking black tea can help slow down the onset of coronary artery disease and reduce the risk of stroke and certain cancers, but it is only recently that a recent study has discovered how black tea works in our bodies.
The study, which followed 50 heart disease patients, who drank 4 cups of black tea a day in addition to plain water for a month, found a significant improvement in vascular function, which is closely related to endothelial cells that control blood flow and prevent blood clots, but doctors also pointed out that black tea does not mean that black tea can replace drugs. According to past studies, diets high in flavonoids such as grapes, apples, onions and black tea can help prevent stroke and heart disease, and of course, lifestyle habits should also be changed, including quitting smoking, controlling weight, drinking moderate alcohol, eating more vegetables, fruits and low-fat foods, etc. Researchers say that drinking black tea may have limited help for personal health, but on the whole, its impact cannot be ignored.
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Black tea is a fully fermented tea, and the main chemical components in the fresh tea leaves of black tea in the processing process are undergoing a series of enzymatic chemical changes under the action of enzymes, and the tea polyphenols are oxidized and polymerized to form theaflavins and thearubigins with huge molecular weight. After the fresh leaves are processed to form black tea, the main components of tea polyphenols are reduced by more than 80, and the theaflavins and thearubigins formed become the most important chemical components in black tea, among which theaflavins account for 1 2 of the dry matter content and thearubigins account for 9 20 of the dry matter content, and the two account for about 40 60 in the black tea water extract. Tea red case and theaflavins are the characteristic substances of black tea, and their content affects the quality and style of tea.
At the same time, thearubigins and theaflavins are the most important active ingredients in black tea, showing good physiological activity. The caffeine content in black tea is close to that of green tea; Amino acids and peptides, organic acids and free sugars were slightly higher than those of green tea; Vitamins are much lower than green tea. The main chemical components and characteristics in black tea are very different from those of green tea, and from the perspective of traditional Chinese medicine, black tea is warm and green tea is cool.
Therefore, its quality characteristics and health care effects also have their uniqueness. Black tea is warm, good at warming the cold, warming the stomach and driving away cold, can dissolve phlegm, eliminate food, and appetize. It can be seen that black tea should be drunk by people with weak spleen and stomach.
Therefore, in daily life, consumers with a bad spleen and stomach should choose black tea for drinking. Black tea contains a large number of phenolic substances, although the molecular weight of these phenolic substances is very large, and the phenolic components in green tea are relatively different from the phenolic components But from the results of clinical trials, it also has the functions of antioxidant, reducing blood lipids, inhibiting arteriosclerosis, enhancing capillary function, and anti-mutation. Black tea contains lipopolysaccharides, therefore, drinking black tea also has the effect of lowering blood sugar.
Black tea has a strong bactericidal and anti-inflammatory effect.
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There is no harm in drinking some black tea if you have a bad stomach and stomach drops.
Pay attention to the concentration of tea has a direct relationship with physical health, in general, tea should be light, because drinking strong tea is harmful to health. Drinking too much strong tea will hurt the stomach, and after drinking strong tea, it will dilute the gastric juice and reduce the concentration of gastric juice, so that the gastric juice can not digest food normally, resulting in indigestion, bloating, abdominal pain and other symptoms, and those with poor gastric function can even cause duodenal ulcers. 1. Strong tea can promote osteoporosis. >>>More
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