The dry tea color of black tea and the brewed tea soup are mainly red, so it is called black tea. The tea sprouts suitable for the production of this product are used as raw materials and refined through typical processes such as withering, rolling, fermentation, and drying. In fact, black tea has a high nutritional value, let's find out below.
Nutritional value of black tea
Tea is a beverage rich in vitamin K and also contains vitamin C and other ingredients. It has the effects of anti-platelet aggregation, promotes the dissolution of dietary fiber, lowers blood pressure and lowers blood lipids, and is very beneficial for the prevention and treatment of cardiovascular diseases.
Tea contains fluorine, tea polyphenols and other ingredients. Drinking tea can prevent dental caries.
Tea is rich in vitamin A and vitamin E, and contains a variety of anti-cancer and anti-aging trace elements. It is a natural bodybuilding drink that helps keep the skin smooth, white and tender, reduces wrinkles, and also resists oxidation, radiation, and improves immunity.
Drinking effect of black tea
1.The liver becomes relaxed
According to experiments, the tea polyalkali in black tea can adsorb heavy metals and alkaloids, and precipitate and decompose. This is a good news for modern people who drink water and food from industrial pollution.
2. Young permanent
In the past 5 years, the US government has funded more than 150 studies on green tea and black tea and their chemical constituents. The results show that the antioxidants in green tea and black tea can completely destroy the transmission path of chemical substances in cancer cells. Dr. Boston said: "Black tea is roughly equivalent to green tea, but the antioxidants of black tea are much more complex than green tea, and especially beneficial to the heart." American magazine reports that black tea has stronger anti-aging effects than garlic heads, broccoli and carrots.
2. No osteoporosis
On May 13, 2002, the American College of Physicians published a survey of 497 men and 540 women for more than 10 years. It was pointed out that people who drink black tea have strong bones, and the polyphenols in black tea (also in green tea) have the ability to inhibit the destruction of bone cell material. . In order to prevent and treat common osteoporosis in women, it is recommended to take a small cup of black tea every day. For example, adding lemon to black tea strengthens bones and has a stronger effect. Mild black tea can also add various fruits to the tea, which can play a synergistic effect.
3. Smooth blood flow
A recent study in the American medical community has also been linked to black tea. Studies have found that patients with heart disease who drink 4 cups of black tea a day can increase their vasodilation from 6% to 10%. After being stimulated, the average person's diastolic degree will increase by 13%. A variety of nutrients, such as a variety of water-soluble vitamins, rich trace elements potassium, manganese, and a flavonoid compound. After brewing black tea, 70% of potassium can be dissolved in tea water, potassium can enhance the blood circulation of the heart.
Through medical experiments, it has been found that the caffeine in black tea stimulates the nerve center by stimulating the cerebral cortex, which promotes refreshment and concentration of thinking, which in turn makes the thinking response sharper and enhances memory; it also has an exciting effect on the vascular system and the heart, strengthening the heart It can accelerate blood circulation to facilitate metabolism, and at the same time promote sweating and diuresis, thereby accelerating the excretion of lactic acid (a substance that makes muscles feel tired) and other old waste materials in the two-pronged way to achieve the effect of eliminating fatigue.
Although black tea is good, it is not suitable for fever, renal dysfunction, cardiovascular disease, habitual constipation, peptic ulcer, neurasthenia, insomnia, pregnant women, lactating women, and children.
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