Tieguanyin is rich in amino acids, vitamins, minerals, tea polyphenols and alkaloids. It has a variety of nutritional and medicinal components and has health care functions. In the eighth year of the Republic of China, it was introduced from Anxi, Fujian, and it was divided into two types: "Tieguanyin with red heart" and "Tieguanyin with green heart". In Wenshan period, the main producing areas were horizontal, with thick branches and loose leaves, few buds and thick leaves, and low yield, but the quality of packaged tea was high, and the production period was later than Qingxin Wulong. Its tree shape is short, its leaves are oval and its leaves are thick and fleshy. The leaves are flattened.
First, the anti-aging effect of Tieguanyin
Some scientific studies at home and abroad show that human aging is related to the peroxidation of unsaturated fatty acids in the body, and the peroxidation of unsaturated fatty acids is related to the action of free radicals. Free radicals with high chemical activity can make unsaturated fatty acids over-oxidized, make cell function mutate or decline, cause tissue proliferation and necrosis, and produce fatal diseases. Lipid peroxidation is the devil of human health, but the culprit is free radicals. As long as free radicals are removed, cells can grow and develop normally, and live a long and healthy life.
Commonly used antioxidants are vitamin C and vitamin E, which can effectively prevent the over-oxidation of unsaturated fatty acids. Japanese researchers have shown that tea polyphenols, a polyphenol compound in Tieguanyin, have strong antioxidant and physiological activity, and are scavengers of human free radicals. According to the research of relevant departments, the effect of 1 mg tea polyphenols on eliminating excessive free radicals harmful to human body is equivalent to 9 micrograms of superoxide dismutase (SOD), which is much higher than other similar substances. Tea polyphenols can block lipid peroxidation and remove active enzymes. According to the test results of Tomoyo in Ota, Japan, it is confirmed that the anti-aging effect of tea polyphenols is 18 times stronger than that of vitamin E.
Second, the anti-cancer effect of Tieguanyin
Cancer is an "incurable disease" that seriously threatens people's health today. Therefore, the study of tea anti-cancer has aroused great interest and concern. A few years ago, it was reported that the esophageal cancer of Shanghai residents decreased year by year because of drinking tea, so the fact that drinking tea can prevent cancer caused great repercussions all over the world. Nowadays, drinking tea to prevent cancer has been recognized by the world, and Tieguanyin is the best anticancer effect in tea.
As early as 1983, Professor Tuonan Okuda of Okayama University in Japan had screened out the anticancer effects of dozens of plant polyphenols.
Tieguanyin tea
The results show that catechin (EGCG) has strong anticancer activity. Another scientist believes that Tieguanyin tea polyphenols are the main active ingredient in the study of confirming Tieguanyin's anti-mutation. In the study of chemical carcinogenesis, the preventive effect of Tieguanyin tea polyphenols has been affirmed. In addition, vitamin C and vitamin E in Tieguanyin can block the synthesis of nitrosamines, which plays a great role in the prevention and treatment of cancer.
Third, Tieguanyin's anti-arteriosclerosis effect.
Tea polyphenols play an important role in human fat metabolism. The human body has cardiovascular diseases such as high cholesterol and triglycerides, such as fat deposition on the inner wall of blood vessels and atherosclerotic plaques formed after vascular smooth muscle cells proliferate. Tea polyphenols, especially catechins ECG and EGC in tea polyphenols and its oxidation products theaflavins, are helpful to inhibit this mottled proliferation, reduce the formation of fibrinogen that enhances coagulation viscosity, make coagulation clear, and thus inhibit atherosclerosis.
1999 may 3 1, at the fourth symposium on oolong tea and health held in Tokyo, Japan, Vice President Chen Ling of Fujian Institute of Traditional Chinese Medicine reported that they took 25 patients with hyperlipidemia and obesity as clinical observation objects to explore the effect of drinking oolong tea Tieguanyin on inhibiting the oxidation of low-density lipoprotein in blood and improving blood lipid metabolism. Studies have proved that tea polyphenols and vitamins in Tieguanyin can inhibit the oxidation of low-density lipoprotein in blood. Dr. Masahiko Hara of Mitsui Institute of Agriculture and Forestry in Japan has also confirmed in many years' research that tea polyphenols can not only reduce cholesterol in blood, but also significantly increase the ratio of high-density lipoprotein to low-density lipoprotein in blood. Caffeine can relax blood vessels, speed up breathing, reduce blood lipids, and has a certain effect on the prevention and treatment of cardiovascular and cerebrovascular diseases such as coronary heart disease, hypertension and arteriosclerosis.
Fourth, the role of Tieguanyin in preventing and treating diabetes
Diabetes is a worldwide disease. About 200 million people in the world have diabetes, and more than 30 million people in China have diabetes. Diabetes mellitus is a chronic progressive disease with disorder of glucose metabolism. The typical clinical manifestations are "three more and one less", that is, drinking more, urinating more, eating more and wasting away, and feeling weak all over. This disease is called "diabetes" in Chinese medicine and belongs to the category of hot and humid heat. The main cause of the disease is the lack of polyphenols in the body, such as vitamin B 1, pantothenic acid, phosphoric acid, methyl salicylate and so on. , make the glucose metabolism disorder, the blood sugar in the body rises sharply, and the metabolism is weakened.
The clinical experiments of Nana Ogawa Takeichiro, a Japanese doctor of medicine, confirmed that drinking tea regularly can replenish vitamin B 1, pantothenic acid, phosphoric acid, methyl salicylate and polyphenols in human body in time, which can prevent the occurrence of diabetes. For patients with moderate and mild diabetes, blood sugar and urine sugar can be reduced to very little or completely normal; For patients with severe diabetes, it can reduce blood sugar and urine sugar and relieve various main symptoms.
Five, Tieguanyin's slimming and bodybuilding function
Obesity is a nutritional disorder accompanied by the continuous improvement of people's living standards, which is caused by excessive nutrient intake or insufficient use of energy stored in the body. Obesity not only brings inconvenience to people's daily life, but also causes cardiovascular diseases and diabetes.
During the period of 1996, Fujian Institute of Traditional Chinese Medicine conducted a study on the slimming effect of drinking Tieguanyin on 102 adult simple obese men and women. Studies have shown that Tieguanyin contains a lot of tea polyphenols, which can not only improve the function of lipolytic enzyme, but also promote the metabolic activity of neutral lipase in tissues. Therefore, drinking Tieguanyin can improve the body shape of obese people, effectively reduce the subcutaneous fat and waist circumference of obese people, and thus lose weight.
Sixth, the role of Tieguanyin in preventing and treating dental caries
It is generally believed that there are two main diseases that harm people's teeth, one is dental caries and the other is periodontitis. Dental caries, commonly known as tooth decay, is a common and frequently-occurring disease in dentistry. There are many reasons for dental caries, one of which is that teeth are poorly calcified, the texture is not hard enough, and it is easy to be damaged. Drinking tea can protect teeth, which has been used for a long time in ancient China. Su Dongpo in Song Dynasty said in Tea Theory: "Gargling with strong tea can not only relieve annoyance, but also strengthen teeth and eliminate smoking addiction." According to modern scientific analysis, Tieguanyin is rich in fluorine, but the fluorine content in general food is very small. About 40% ~ 80% fluoride in Tieguanyin is dissolved in boiling water, which is easy to combine with calcium in teeth and form a layer of calcium fluoride on the surface of teeth, which plays a role in preventing acid and caries.
In Japan, the dental caries rate of school-age children in two neighboring villages was investigated. The results show that drinking Tieguanyin has a good preventive and therapeutic effect on dental caries. Every child who goes to school drinks a cup of Tieguanyin every day. If the fluorine content is 0.4 mg, for one year, half of the children suffering from dental caries will be cured. According to Japanese statistics, there are 65,438+000 primary school students suffering from dental caries. After drinking Tieguanyin, 55% of the students' dental caries were obviously relieved. It can be seen that drinking Tieguanyin has a preventive effect on people without dental caries and a therapeutic effect on people with dental caries.
Seven, Tieguanyin sterilization stop dysentery.
Tieguanyin has long been used to treat dysentery and stomachache in Anxi. There are also many records about the treatment of bacillary dysentery, dysentery, dysentery, acute enteritis and acute gastritis with tea in ancient medical books in China. Why can Tieguanyin play a role in sterilizing and stopping dysentery? Mainly tea polyphenols. Because tea polyphenols enter the gastrointestinal tract, it can relax the nervous function of the intestine and relieve the intestinal movement; At the same time, it can coagulate the intestinal protein, because the bacteria themselves are composed of protein. When tea polyphenols meet bacterial protein, bacteria will die immediately, which plays a role in protecting gastrointestinal mucosa, so it has the effect of treating enteritis.
Eight, Tieguanyin's function of clearing heat and reducing fire
Tea is a good drink for heatstroke prevention and cooling. Li Shizhen's "Compendium of Materia Medica" said: "Tea is bitter and cold, but ……………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………. "In the dog days of midsummer, it's cool and hot. Drinking a cool Tieguanyin or a hot Tieguanyin will make you cool physically and mentally, and bring forth body fluid to relieve summer heat. This is because tea soup contains tea polyphenols, sugars, amino acids, pectin, vitamins and so on. It reacts chemically with saliva in the mouth to moisten the mouth, so it can play the role of promoting fluid production and quenching thirst. At the same time, due to the caffeine in Tieguanyin, the pores of human skin release a lot of energy. It is reported that drinking a cup of hot tea can sweat through human skin pores, which is equivalent to 50 times of this cup of tea, so it can make people feel cool and relieve summer heat.
Nine, Tieguanyin refreshing function
It is almost known that drinking tea can refresh you. There are many medical books in China in the past dynasties, and all the literati and monks in the past dynasties waved their wonderful pens and praised the refreshing and beneficial effects of tea. Bai Juyi's poem "To the Thirteen Kings of the East" said: "Chi Pan's moon is hand in hand, and bamboo is blowing. Drive away the sorrow and know the strength of the wine, and break the sleep and see the tea. " This poem clearly mentions the efficacy of tea in refreshing and breaking sleep. Su Dongpo's poem said: "Make thirty cups of tea, regardless of taste, and pack laymen with monks who beat sand people." He said that he would give the tea to Bao Jushi and let him drink it to avoid falling asleep during meditation. Drinking tea can be beneficial to thinking, so it is loved by people, especially some writers, poets and other mental workers. For example, Balzac, a great French writer, Han, a Chinese-American woman writer, and Yao, a famous writer in China, all like drinking tea to help their writing.
Tieguanyin can refresh the mind, and its function mainly lies in caffeine in tea. Caffeine can excite the central nervous system, improve thinking and improve efficiency. Therefore, drinking tea can break sleep, refresh and relieve boredom, clear the mind, improve thinking, and significantly improve oral defense ability and mathematical thinking response. At the same time, Tieguanyin contains polyphenols and other compounds, which counteracts the adverse effects of pure caffeine on human body. This is also one of the important reasons for the long history, enduring and continuous development of tea drinking.
Ten, Tieguanyin sobered the enemy's smoke.
It is also a well-known fact that tea can sober up and fight against cigarettes. Wang Yangming, a philosopher in the Ming Dynasty, famously said, "Just as you are drunk, you need tea to sober up", which shows that our people have long recognized the efficacy of drinking tea to sober up. The ancients often "drown their sorrows by drinking" and "sober up with tea". Liu Yuxi, a poet in the Tang Dynasty, was drunk one day and remembered that Bai Juyi had "six teas" to sober up, so he sent someone to give him some tea to sober up, which was passed down as a tea affair by later generations. The main component of wine is alcohol, and a glass of wine contains alcohol 10% ~ 70%. Tieguanyin tea polyphenols and ethanol (the main component of wine) can offset each other, so drinking tea can relieve alcohol.
Tieguanyin can not only sober up, but also fight against cigarettes. Because Tieguanyin contains a phenolic acid substance, it can precipitate nicotine in tobacco and excrete it. At the same time, caffeine in Tieguanyin can improve the liver's ability to metabolize drugs, promote blood circulation, expel nicotine from human blood from urine, and alleviate and eliminate the side effects caused by nicotine. Of course, this effect is not only the single effect of caffeine, but also the synergistic effect of tea polyphenols, vitamin C and other ingredients.