Health functions

Dietary nutrition

Black tea is rich in nutrients, the most important ones are vitamins and minerals, and there are also

Pictures of dark tea (20 pictures)

Proteins, amino acids, sugars, etc. For the residents of the northwest who mainly eat beef, mutton and cheese and lack vegetables and fruits in their diet, long-term drinking of Hunan black tea is an important source of essential minerals and various vitamins for their human body. It is said to be the tea of ??life.

Hides digestion and oil removal

The caffeine, vitamins, amino acids, phospholipids, etc. in black tea help the human body digest and regulate fat metabolism. The stimulating effect of caffeine can also increase the secretion of gastric juice. quantity, thereby increasing appetite and aiding digestion. Japanese scholars have proven through scientific tests that dark tea has strong functions such as relieving greasiness and digesting food. This is why carnivorous people particularly like this kind of tea.

The food structure of the ethnic minority people in northwest China is beef, mutton and cheese, so there is a saying that "it is better to go without food for three days than to go without tea for one day". This is consistent with the fact that tea can "remove fat" The effect of "removing the fishy smell" has a lot to do with it.

In addition, dark tea can also improve the intestinal microbial environment and has the function of smoothing the stomach. Chinese people have a tradition of using black tea to treat abdominal distension, dysentery and indigestion.

Reduce lipids and lose weight

High blood lipid content will cause lipids to deposit on the blood vessel walls, thus causing atherosclerosis and thrombosis. Dark tea has good fat degradation, anti-blood coagulation, fibrinogen dissolution and significant inhibition of platelet aggregation. It can also relax the blood vessel wall and increase the effective diameter of the blood vessel, thereby inhibiting the formation of atherosclerotic plaques on the inner walls of the aorta and coronary arteries. form. Achieve the purpose of lowering blood pressure, softening blood vessels, and preventing and treating cardiovascular diseases.

The abundant tea polysaccharides in dark tea have the effect of reducing blood lipids and peroxide activity in the blood. From May 1990 to May 1991, the Chinese People's Liberation Army General Hospital observed 55 hyperlipidemia patients among 155 veteran cadres in a cadre rest center who took black tea (3 grams per day) continuously for 180 days. In 50 patients who drank black tea, their blood lipid content and blood peroxide activity decreased significantly.

Antioxidation

The free radical theory of aging believes that under normal physiological conditions, free radicals in the human body are constantly produced and removed, and are in a state of balance. Dark tea is not only rich in antioxidants such as catechins, tea pigments, flavonoids, vitamin C, vitamin E, D-carotene, etc., but also contains a large number of trace elements with antioxidant effects such as zinc, manganese, Copper (a constituent element of SOD) and selenium (a constituent element of GSHPX), etc. The catechins, theaflavins, theanine and tea polysaccharides in dark tea, especially the complex flavonoids with high content, all have the function of scavenging free radicals, and therefore have the effect of antioxidant and delaying cell aging.

Anti-cancer

Cancer is one of the diseases that causes extremely high mortality in the world.

Since the late 1970s, scientists from all over the world have discovered that tea or tea extracts can inhibit the occurrence of various cancers. Hunan Agricultural University used high-throughput screening technology, the cutting-edge technology of modern drug screening, to conduct high-throughput screening research on the tumor cell model SGC7901 of dark tea, which proved that dark tea has a significant inhibitory effect on tumor cells.

Lower blood pressure

Tea has been reported for a long time to have the effect of lowering blood pressure. According to reports from Japan, the unique amino acid theanine in tea can inhibit the increase in blood pressure by activating dopaminergic neurons. Here, it was also found that the caffeine and catechins in tea can relax blood vessel walls, increase the effective diameter of blood vessels, and lower blood pressure through vasodilation. China Lou Fuqing et al. found that tea pigment has significant anticoagulant effects, promotes fibrinolysis, prevents platelet adhesion and aggregation, and inhibits the proliferation of arterial smooth muscle cells. It can also significantly reduce triglycerides and low-density lipoprotein in the serum of high-fat animals, and improve High-density lipoprotein in serum and has a significant inhibitory effect on ACE enzyme and has a blood pressure lowering effect.

Lower blood sugar

The tea polysaccharide complex in dark tea is the main component of lowering blood sugar. Tea polysaccharide complex, often called tea polysaccharide, is a type of mixture with complex and highly variable compositions

Black tea

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The results of measuring the tea polysaccharide content of several tea types show that dark tea has the highest tea polysaccharide content, and its components are more active than other tea types. This is because in fermented tea, glycosidase, protease, and hydrolase The reason is that relatively short sugar chains and peptide chains are formed. Short peptide chains and longer peptide chains are easier to absorb and have stronger biological activity. This may be the reason why fermented tea, especially black tea, polysaccharides have excellent hypoglycemic effect. One of the reasons for other teas.

Bactericidal and anti-inflammatory

The main components of black tea soup 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 Bacillus botulinum, Enterobacteriaceae, Staphylococcus aureus, Capsulitis, and Bacillus cereus. In addition, theaflavins have a certain inhibitory effect on the invasion of influenza viruses and infections by rotavirus and enterovirus.

Diuresis and detoxification

The diuretic function of caffeine in black tea is achieved by promoting the filtration rate of water in urine through the kidneys. At the same time, caffeine's stimulating effect on the bladder can not only assist diuresis, but also help sober up and relieve alcohol poisoning. At the same time, the tea polyphenols in black tea can not only precipitate the nicotine in tobacco and excrete it from the body with urine, but also remove free radicals in smoke and reduce the toxic effect of smoke on the human body. Tea polyphenols have a strong adsorption effect on heavy metal poisons, so drinking more tea can also alleviate the toxic effects of heavy metals.