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Health function
Dietary nutrition
Black tea is rich in nutrition, the most important thing is vitamins and minerals, and
Black tea pictures (20 photos)
Protein, amino acids, sugars, etc. For the residents in northwest China who live on beef, mutton and cheese and lack vegetables and fruits, drinking Hunan black tea for a long time is an important source of essential minerals and vitamins, so it is called the tea of life.
Helps digestion and relieves grease.
Caffeine, vitamins, amino acids, phospholipids and so on. Black tea helps the human body to digest and regulate fat metabolism. The stimulation of caffeine can improve the secretion of gastric juice, thus increasing appetite and helping digestion. Japanese scholars have proved through scientific experiments that black tea has a strong function of relieving greasy and helping digestion, which is why meat eaters especially like this kind of tea.
The food structure of ethnic minorities in northwest China is beef, mutton and cheese, so there is a saying that "it is better not to drink tea for three days", which has a lot to do with the efficacy of tea in "removing fat and getting tired" and "removing fishy smell from meat".
In addition, black tea can also improve the intestinal microbial environment and has the function of moistening the stomach. China folks have a tradition of using aged black tea to treat abdominal distension, dysentery and dyspepsia.
Reduce fat and lose weight
High blood lipid content will make lipid deposit on blood vessel wall, which will cause atherosclerosis and thrombosis. Black tea has good effects of degrading fat, anticoagulation, promoting fibrinogen dissolution and significantly inhibiting platelet aggregation. It can also relax the wall of blood vessels and increase the effective diameter of blood vessels, thus inhibiting the formation of atherosclerotic plaques on the inner wall of aorta and coronary artery. Achieve the purpose of lowering blood pressure, softening blood vessels and preventing and treating cardiovascular diseases.
Tea polysaccharide rich in black tea can reduce blood lipid and peroxide activity in blood. From May 1990 to May 199 1, the General Hospital of the Chinese People's Liberation Army observed 55 patients with hyperlipidemia among 55 retired cadres. After taking black tea 180 days (3g a day) continuously, 50 patients drank black tea, and their blood lipid content and blood peroxide activity decreased obviously.
antioxidation
According to the free radical theory of aging, under normal physiological conditions, free radicals in the human body are constantly produced and removed, which is in a state of balance. Black tea is not only rich in catechins, tea pigments, flavonoids, vitamin C, vitamin E, D- carotene and other antioxidant substances, but also contains a large number of trace elements with antioxidant effects such as zinc, manganese, copper (the constituent element of SOD) and selenium (the constituent element of GSHPX). Catechins, theaflavins, theanine and tea polysaccharides in black tea, especially compound flavonoids with high content, all have the function of scavenging free radicals, so they have the functions of antioxidation and delaying cell aging.
be anticancer
Cancer is one of the diseases with extremely high mortality in the world.
Since the late 1970s, scientists all over the world have found that tea or tea extract can inhibit the occurrence of various cancers. Qualcomm quality screening technology, the frontier technology of modern drug screening, was used by Hunan Agricultural University to screen the tumor cell model SGC790 1 of black tea, which proved that black tea had obvious inhibitory effect on tumor cells.
bring down the blood pressure
It has long been reported that tea has the effect of lowering blood pressure. Japan reported that theanine, a unique amino acid in tea, can inhibit the increase of blood pressure by activating dopaminergic neurons. It is also found here that caffeine and catechin in tea can relax the wall of blood vessels, increase the effective diameter of blood vessels and reduce blood pressure by relaxing blood vessels. Lou Fuqing, China, et al. found that tea pigment has obvious effects of anticoagulation, promoting fibrinolysis, preventing platelet adhesion and aggregation, and inhibiting the proliferation of arterial smooth muscle cells. It can also significantly reduce triglyceride and low-density lipoprotein in serum of high-fat animals, increase high-density lipoprotein in serum, significantly inhibit ACE enzyme, and has antihypertensive effect.
Hyperglycemia
Tea polysaccharide complex in black tea is the main component of lowering blood sugar. Tea polysaccharide complex, usually called tea polysaccharide, is a complex and diverse mixture.
Dark tea
. The content of tea polysaccharide in several kinds of tea was determined. The results showed that the content of tea polysaccharide in black tea was the highest, and its component activity was stronger than other teas. This is because fermented tea forms relatively short sugar chains and peptide chains under the action of glycosidase, protease and hydrolase, and the shorter peptide chains are easier to be absorbed and have stronger biological activity, which may be one of the reasons why fermented tea, especially black tea polysaccharide, has better hypoglycemic effect than other teas.
Sterilization and anti-inflammatory
The main components of dark tea soup color are theaflavins and thearubigins. Studies have shown that theaflavins are not only an effective free radical scavenger and antioxidant, but also have obvious antibacterial effects on Botox, Enterobacteriaceae, Staphylococcus aureus, Clostridium perfringens and Bacillus cereus. In addition, theaflavins can also inhibit the invasion of influenza virus and the infection of rotavirus and enterovirus.
Diuretic detoxification
The diuretic effect of caffeine in black tea is realized by the kidney promoting the filtration rate of water in urine. At the same time, the stimulating effect of caffeine on bladder not only helps diuresis, but also helps sober up and relieve alcoholism. At the same time, tea polyphenols in black tea can not only precipitate nicotine in tobacco and excrete it with urine, but also remove free radicals in smoke and reduce the toxic effect of smoke on human body. Tea polyphenols have a strong adsorption effect on heavy metal poisons, so drinking more tea can also alleviate the toxic effect of heavy metals.
Brick tea health care
Black tea is different from other teas in the selection of raw materials and processing technology (fermentation and flowering), which leads to the particularity of the composition and proportion of biochemical components of black tea and the resulting pharmacological effects.
Tea leaves formed by microorganisms participating in pile fermentation process have different functions because of their different components from red green tea. L has remarkable effects in reducing blood fat, blood pressure, blood sugar, weight loss, preventing cardiovascular diseases and fighting cancer. Studies have shown that the special health care function of black tea is related to its rich tea polysaccharide.
Matters needing attention
Cold drink Anhua black tea can only suddenly lower the body surface or local temperature, but can't quench fever and quench thirst for a long time. Drinking hot tea properly is more conducive to relieving summer heat and quenching thirst, clearing away heat and cooling the body. Because drinking hot tea can dilate blood vessels, promote sweat gland secretion and make perspiration smooth. A lot of sweat seeps out of the body through the pores on the skin surface and volatilizes, which will take away a lot of body heat and reduce the body surface temperature by 2~3℃. In addition, theophylline in Anhua black tea has diuretic effect, and urination can also take away some heat. Anhua black tea is also rich in tea polyphenols, tea pigments and amino acids, which can also stimulate saliva secretion and react with saliva, thus moistening the mouth and producing a cool feeling, which is not obvious when cold drinks Anhua black tea. In hot summer, it's really a rare enjoyment to have a cup of Anhua black tea herbal tea in your spare time. However, when the body is in a state of water shortage, rushing to drink herbal tea can not only fail to appreciate its unique flavor, but may even cause harm to the body. Drinking hot tea is a better choice at this time.
The wonderful use of life
1, which has certain effect on treating habitual constipation. Spring is coming, which is the season of gastrointestinal diseases. Hot drinking black tea, especially aged black tea, has a good effect on treating chronic enteritis. At the same time, drinking black tea can eliminate abdominal distension and have a miraculous effect on indigestion.
2, black tea shampoo can relieve hair itching. Black tea (Zen Er Fu tea) is rich in protein, tea polyphenols, tea polysaccharides, vitamins and minerals. Among them, protein, tea polysaccharide, vitamins and minerals are essential nutrients for hair growth, and tea polyphenols and other substances have antibacterial, anti-inflammatory and antiallergic effects. Therefore, black tea (Zen Er Fu tea) tea juice is a natural nutritious hair care shampoo, which has the effects of dandruff removal, itching relief and hair care. Long-term use can make hair clean and shiny.
3. Soaking feet with black tea can quickly relieve fatigue, deodorize and inhibit bacteria. Black tea (Zen Er Fu tea) is rich in tea polyphenols, tea polysaccharides, vitamins and minerals. Tea polyphenols and tea saponin have antibacterial and antiallergic effects. The aromatic substances in black tea (Zen Er Fu tea) have deodorizing and anti-inflammatory effects. Moreover, black tea (Zen Er Fu tea) has strong compatibility, or you can choose appropriate Chinese medicines such as safflower and Eucommia ulmoides to make herbal tea foot bath liquid, which acts on the soles of feet and meridians to achieve the purpose of regulating the body. Boiling the tea juice of black tea (Chaner Fu Cha) with proper concentration (1:25-50) or mixing it with traditional Chinese medicine, and soaking feet with water temperature of about 35-40℃ can quickly relieve fatigue, restore physical strength, deodorize and inhibit bacteria.