The origin of black tea in China is also very extensive. The main black teas are Anhui Qimen Black Tea, Yunnan Phoenix, and Fujian Zhengshan Race. The reason why black tea can take the world by storm is that in addition to its mild tea nature, which is a neutral tea fit for the old and young women, the more important is the unique health function of it.
Nourishing the stomach.
The warming and nourishing effect of black tea is very outstanding. People who drink green tea without eating will feel upset in the stomach. This is because tea polyphenol, an important substance contained in tea, has astringent properties and has a certain stimulating effect on the stomach. It is more irritating on an empty stomach. Strong. However, because black tea undergoes fermentation and converts more polyphenols, it stimulates the human stomach and intestines less. In addition, the oxidation products of tea polyphenols, theaflavin, etc. can also promote human digestion, so black tea is not only non- harmful but also can nourish the stomach instead. Black tea is warm in theory in Chinese medicine and is more suitable for people with cold stomachs.
In addition, the rich protein and carbohydrates in black tea, as well as other rich nutrients, can enhance the body’s ability to protect against cold, nourish yang, and heat and warm the stomach.
It is worth mentioning that the retention of tea polyphenols in black crushed tea is 55% -65%, and the retention of tea polyphenols in Kungfu black tea is mostly below 50%. The alcohol content of Kungfu black tea will be better. Stomach effect is also better.
Preventing Parkinson’s disease.
According to a study published in the American Journal of Epidemiology, scientists from the National University of Singapore surveyed about 63,000 Singapore residents aged 45-74 years and found that people who drink at least 23 cups of black tea per month have Parkinson’s disease. The chance is 71% lower than others. The reason why black tea can reduce the risk of Parkinson’s disease in people who drink black tea is that the antioxidants in black tea play a great protective role. Experiments have shown that the amount of antioxidants released by 2 cups of black tea is equivalent to 4 apples, 7 cups of orange juice, 5 onions or 12 cups of white wine. A spokesman for the British Parkinson’s Association said that the results of these studies are promising. In the future, drugs that can prevent the active ingredients of Parkinson’s disease can be extracted from black tea.
Anti-flu and bactericidal anti-inflammatory.
The human body is most susceptible to a cold when it cools down. At this time, drinking more black tea can prevent it. Japanese researchers have demonstrated that diluting black tea to less than 5 times the daily drinking concentration can still deactivate 99.999% of the influenza virus. This is because the theaflavin in black tea has the functions of killing food poisonous bacteria and making the influenza virus infectious. So gargle with black tea every day can prevent colds and flu.
In addition, tea polyphenols and their oxides, aromatics, saponins and other substances in black tea have the effects of inhibiting and killing bacteria, molds, fungi, pathogens, and anti-inflammatory and analgesics.
Prevent heart disease.
Studies have shown that people who drink more than three cups of black tea a day have a significantly lower incidence of coronary heart disease than people who do not drink tea. After drinking black tea for 1 hour, the blood flow velocity of the heart blood vessels improves, which can prevent myocardial infarction. This is because black tea is rich in tea pigments (theaflavin, etc.). These substances have a strong anti-lipid oxidation effect, inhibit vascular lipid peroxidation and platelet aggregation, which can prevent coronary heart disease or Stroke reduces the low-density lipoprotein content that is unfavorable to the human body and achieves the effect of preventing heart disease. So for preventing cardiovascular accidents, black tea is better than green tea.
Lower blood pressure and prevent blood clots.
Drinking black tea can improve the function of vascular endothelial cells in the heart and other parts, which has been shown to help regulate blood flow. Its abnormality is one of the main causes of atherosclerosis. Tea pigment can also improve microcirculation, ensure the normal supply of blood tissue and oxygen, inhibit platelet adhesion and aggregation, anticoagulation, antithrombotic, antiarteriosclerosis, and protect cardiovascular and prevent thrombosis.
At the same time, tea pigments and tea polysaccharides contained in black tea have the effects of relaxing blood vessels, enhancing blood vessel toughness, and relaxing blood vessels, thereby slowing the heart rate and adjusting blood pressure to normal.
Preventing skin diseases.
Drinking black tea can effectively reduce people’s chances of developing skin cancer. Researchers have tested white mice in the laboratory to prove that, when exposed to excessive ultraviolet rays, the rate of skin damage or cancer in mice that had consumed black tea was 54% lower than that in mice that drank only water. And in the control experiments of black tea and green tea, it was found that the incidence of skin cancer was much lower in black tea than in those who drank green tea. This is the first time that black tea has stronger anti-cancer effect than green tea in preventing skin cancer .
Drinking black tea can prevent allergic rhinitis and bronchial asthma caused by pollen, and can alleviate the symptoms caused by allergies.
A study by mice at the University of Corrado in the United States also found similar results: Theaflavin, which is unique in black tea, can reduce the allergic reaction conditions in people with sensitive skin. When a person is suffering from an allergy, the antigen invades the body, causing the lymphocytes to react and release antibodies. When the antigen invades the body again, it will cause a complex antigen-antibody reaction in the cell and cause allergic symptoms. Black tea can inhibit the occurrence of anti-allergic antibodies and prevent allergies.
Reduce harmful cholesterol.
A new study shows that drinking black tea not only reduces the amount of harmful cholesterol in the body, but also reduces the risk of heart disease.
US Department of Agriculture scientists have found that consumers who drink black tea for three weeks have reduced their low-density lipoproteins, the so-called harmful cholesterol levels, by 7% -11%.
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 (including its oxidation products) inhibit the destruction of bone cell substances vitality.