Black tea, English is Black tea. During the processing of black tea, a chemical reaction centered on the enzymatic oxidation of tea polyphenols occurs. The composition of fresh leaves changes greatly, and the tea polyphenols are reduced by more than 90%, resulting in new components and aroma substances such as theaflavins and thearubigens. It has the characteristics of black tea, red soup, red leaves, sweet and mellow. The most famous black tea varieties are Qimen black tea.
Black tea is rich in carotene, vitamin A, calcium, phosphorus, magnesium, potassium, caffeine, isoleucine, leucine, lysine, glutamic acid, alanine, aspartic acid and other nutrients. During the fermentation of black tea, the chemical reaction of polyphenols changes the chemical composition of fresh leaves greatly, and produces theaflavins, thearubicins and other components. Its aroma is significantly increased compared with fresh leaves, forming the unique color and fragrance of black tea. ,taste.
Black tea can help gastrointestinal digestion, promote appetite, diuresis, eliminate edema, and strengthen heart function. "The flavonoids rich in black tea can eliminate free radicals, have an anti-acidification effect, and reduce the incidence of myocardial infarction. Black tea can help regulate blood sugar, but there is still no definite conclusion. In winter, it is easy to feel sick to the stomach. Too many people who feel unwell can add brown sugar and ginger slices to the black tea. Drink it slowly while it is warm. It has the effect of nourishing the stomach and makes the body more comfortable.
Black tea taboo
1. People with stones and tumors. People with stones are generally not allowed to drink black tea
2. People with anemia, mental weakness and insomnia
3. People who are usually emotionally agitated or more sensitive, have poor sleep and have weaker bodies
4. People with hot stomach
5. Tongue coating  Those with thick, bad breath, acne-prone, and red eyes
6. People who are taking medicine
7. Women who are menstruating
8. Women during pregnancy
9. Breastfeeding women
10. Menopausal women