It is forbidden for people with poor gastrointestinal function, and it should be used with caution for women during menstruation and lactation.
"A bowl of throat kiss embellish, two bowls of broken lonely stuffy. Three bowls of heartbroken, only five thousand volumes of words. . . "This popular and unique poem is a tribute to China tea.
"Clear soup, green water and orchid fragrance" is the best interpretation of the fragrant Tieguanyin. Tieguanyin focuses on verve. The charm is mainly the feeling of entrance and throat, the sweetness of taste, the lubrication of throat and the sweetness of aftertaste. A good Tieguanyin smells like an orchid, with a sweet aftertaste and a smooth entrance. Close your mouth and exhale through your nose, and you can feel the fragrance of orchids.
Tieguanyin is a semi-fermented tea between black tea and green tea. The "half" here can only be understood but not expressed. Guanyin, formerly known as compassion, is crowned with the word "iron", which can be described as both rigidity and softness. It is generally believed that Tieguanyin originated in Anxi, Fujian. It was first created successfully in the Yongzheng period of the Qing Dynasty, and later spread to Fujian, Taiwan Province Province, Guangdong and other places. Tieguanyin tea is named after the Tieguanyin tree that grows it. There are many legends about why tea trees are called Tieguanyin by local people.
Tieguanyin is not only a precious natural drink, but also has a good beauty and health care function. Scientific analysis and practice have proved that Tieguanyin is rich in amino acids, vitamins, minerals, tea polyphenols and alkaloids, and has a variety of nutritional and medicinal components. Has the effects of clearing away heart fire, improving eyesight, killing bacteria, diminishing inflammation, losing weight, caring skin, delaying aging, preventing and treating cancer, reducing blood fat and cholesterol, and reducing cardiovascular diseases and diabetes. It is a household name in Hong Kong, Macao, Taiwan, Southeast Asia, Japan, Europe and America, and is deeply loved by consumers.
The effect of Tieguanyin is 1. Drinking Tieguanyin can make people feel refreshed and enhance their thinking and memory ability.
2. Drinking Tieguanyin can eliminate fatigue, promote metabolism and maintain the normal functions of the heart, blood vessels and gastrointestinal tract.
Drinking tea is of great benefit to preventing dental caries. A survey in Britain shows that children who drink tea regularly can reduce their dental caries by 60%.
Tea contains many trace elements beneficial to human body.
5. Tea can inhibit malignant tumor, and drinking tea can obviously inhibit the growth of cancer cells.
6. Drinking tea can inhibit cell aging and prolong life. The anti-aging effect of tea is more than 18 times that of vitamin e.
7. Drinking tea can delay and prevent the formation of lipid plaque in vascular intima, and prevent arteriosclerosis, hypertension and cerebral thrombosis.
8. Drinking tea can excite the central nervous system and enhance exercise ability.
9. Drinking tea has a good slimming and beauty effect, especially oolong tea. Anxi Tieguanyin is also known as "beauty tea" and "slimming tea".
10, drinking tea can prevent senile cataract.
1 1. Tannic acid contained in tea can kill many kinds of bacteria, so it can prevent and treat stomatitis, pharyngolaryngitis, enteritis, dysentery, etc.
12, drinking tea can protect people's hematopoietic function. Tea contains anti-radiation substances. Drinking tea while watching TV can reduce the harm of TV radiation and protect your eyesight.
13, drinking Tieguanyin tea can maintain the normal acid-base balance of blood. Tea contains alkaloids such as caffeine, theophylline, theobromine and xanthine, and is an excellent alkaline drink. Tea can be quickly absorbed and oxidized during the extraction process, resulting in high concentration of alkaline metabolites, thus neutralizing acidic metabolites in the blood in time.
14, heatstroke prevention and cooling. After drinking hot tea for 9 minutes, the skin temperature drops 1-2 degrees Celsius, which makes people feel cool and dry, while after drinking cold drinks, the skin temperature drops slightly.
15, detoxicating, promoting digestion and removing greasy food
Zheng Daoxi felt the long history of Anxi Tieguanyin, calling Tieguanyin the "time-honored brand" of China tea family. Regarding its value, he first discussed "detoxification, digestion and oil removal". According to the article, tea is recognized as the best healthy drink for human beings. As early as the Western Han Dynasty, there was a record in Shennong's Classic of Materia Medica that "seventy-two poisons were encountered every day, and tea was used to solve them". In the 20th century, scientists discovered that there is a flavonoid mixture in tea, which has the function of sterilization and detoxification.
The role of Tieguanyin In recent years, it has been confirmed by scientists at home and abroad, especially Japanese scientists, that the chemical components and mineral elements in Tieguanyin have special effects on human health, as follows:
1, 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. Recently, Japanese researchers have shown that polyphenols in Tieguanyin can prevent excessive oxidation; Purine alkaloids can indirectly scavenge free radicals, thus achieving the purpose of delaying aging.
2. The anticancer effect of Tieguanyin.
Cancer is an "incurable disease" that seriously threatens people's health today. Therefore, in recent years, the anti-cancer research of tea 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. The results showed that catechin (EGCG) had 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. Of course, to buy authentic Tieguanyin, we recommend buying it on the website of Dixiang Tea. 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.
3. The anti-arteriosclerosis effect of Tieguanyin.
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. According to the survey of farmers in Anxi Tea Township 1080 of Fujian Medical University, the incidence of not drinking Tieguanyin tea is 3. 1%. Occasionally drinking alcohol is 2.3%; Drinking for more than 3 years is 1.4%. It can be seen that people who often drink Tieguanyin have lower incidence of coronary heart disease than those who don't drink Tieguanyin.
Preventive and therapeutic effects of Tieguanyin on diabetes mellitus
Diabetes is a worldwide disease. At present, about 200 million people in the world suffer from diabetes, and more than 30 million people in China suffer from 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.
The slimming and bodybuilding function of Tieguanyin
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. People's Hospital of Quanzhou City, Fujian Province used Tieguanyin slimming tea to treat 164 obese patients, taking slimming tea 12 ~ 14g every day, 15 days as a course of treatment. After two courses of observation, the patients' blood lipid, triglyceride and cholesterol decreased obviously, and their weight also decreased, and the total effective rate reached over 70%.
Preventive and therapeutic effects of Tieguanyin on 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 fluorophosphate on the surface of teeth, which plays a role in preventing acid and caries.
Bactericidal and dysentery-relieving effect
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.
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.
Refreshing
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. Of course, to buy authentic Tieguanyin, we recommend buying it on the website of Dixiang Tea. 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.
Effect of Tieguanyin on Sobering up and Quitting Smoking
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.
Detoxification, digestion, greasy, bright eyes and pure heart are all available.
Tea has been recognized as the best healthy drink. People's long-term practice of drinking tea has fully proved that drinking tea can not only improve nutrition, but also prevent and treat diseases. As early as the Western Han Dynasty, there was a record in Shennong's Classic of Materia Medica that "Shennong tasted a hundred herbs and encountered 72 poisons every day, so he eliminated them with tea". It shows that the detoxification effect of tea has been discovered in Shennong period. Regarding the digestion effect of tea, the book "Seeking Truth from Materia Medica" makes it very clear: in terms of efficacy, there are as many as 19, and most people call it "digestion". In classic works such as Tea Classic, Tea Spectrum and China Pharmacy Dictionary, it is recorded that tea has the functions of "eliminating fishy meat, clearing the heat of highland barley" and "resolving food stagnation". The functions of degreasing and improving eyesight of tea have been loved and respected by people since ancient times. Dong Bo Miscellaneous Notes and Edited by Herbology Society have the words of "relieving greasy food, cattle and sheep poison" and "improving eyesight". With the passage of time, people didn't know the structure and properties of flavonoids in tea until the end of 19. More than a hundred years later, with the development of science and the continuous improvement of chemical determination methods, scientists found that this mixture contains more than ten kinds of compounds, which are very complex in nature and have the functions of regulating human metabolism, enhancing vascular elasticity, sterilizing and detoxifying. Later medical research also showed that tea contains caffeine, tea polyphenols, vitamins, aromatic substances and other components that are beneficial to human health. Drinking tea can not only quench thirst, relieve fever, detoxify, diminish inflammation, help digestion, but also improve eyesight, clear heart and cheer up. Menstruation and other medical and health care functions. Tieguanyin, as a famous tea in the world, must have these characteristics of ordinary tea. As the song "To You Three Cups of Tieguanyin" says: "Tourists from afar pass by the tea forest and worship you three cups of Tieguanyin. One cup of clear eyes, two cups of pure heart, and three cups of green tea nourish the heart and refresh the mind. I have never tasted Anxi Tieguanyin in my life, nor am I a real tea taster. " Singing has become a household name and spread all over the country.
Beauty, weight loss, anti-aging, cancer prevention and intelligence enhancement.
In recent years, with the improvement of living standards, people's awareness of health care has been continuously enhanced. Drinking tea requires not only good tea, but also health-care tea that is beneficial to health and longevity. In this regard, medical scientists have studied the influence of Tieguanyin tea on various organs and functions of human body by using the special ingredients contained in Tieguanyin tea. The role of research work. The results show that Tieguanyin not only has the above medical and health care functions, but also has obvious unique functions such as preventing dental caries, reducing blood fat, anti-inflammatory, anti-allergic, beautifying, losing weight and delaying aging. Tieguanyin has these special effects:
One is the crude catechin group of Tieguanyin? He Zhong has the strongest antioxidant activity, and it contains the highest amount of EGCG, which can remove the reactive oxidation molecules in cells and improve the damage or influence caused by reactive oxygen species, thus protecting the human body from aging diseases (such as dementia).
Secondly, compared with other teas, the contents of Mn, Fe, F, K, Na (k/Na) in Tieguanyin are higher than those in other teas, and the ratio of k/Na is high, so it has a good curative effect on patients with diabetes and hypertension.
3. Among oolong tea, green tea, black tea and scented tea, Tieguanyin in oolong tea has the highest fluorine content. At the same time, the fluorine content of Tieguanyin is much higher than that of ordinary food. Fluorine is the main medium of bone structure, which has a significant effect on preventing and treating dental caries and osteoporosis in the elderly.
Fourthly, compared with hairy crabs and daffodils, Tieguanyin has the richest kinds of aromatic substances and the highest content, which constitutes the characteristics of Tieguanyin's long fragrance. These scents have positive effects on pleasure, health preservation and health care. 1979 and 1984, there were two "Oolong Tea Fever" in Japanese market. Tieguanyin was once popular all over Japan and has become synonymous with oolong tea, known as "beauty tea" and "slimming tea".
However, drinking Tieguanyin tea can prevent cancer and increase wisdom, but it is not a little-known thing. Modern medical research shows that Tieguanyin has a high selenium content, which ranks among the top six teas and is also higher than the general oolong tea (such as Narcissus and Huang Dan). Selenium is a component of glutathione oxidase, which can stimulate the resistance of immune protein and antibody diseases and inhibit the occurrence and development of cancer cells.
According to Fujian Tea 1998, British scientists have found that the pH of human brain fluid is related to IQ. Within the allowable range of body fluid pH, IQ is low when acidity is high and high when alkalinity is high. Tea is an alkaline drink. Drinking tea regularly, especially Tieguanyin tea, can adjust the acid-base balance of human body and improve people's IQ. This is due to the high content of vitamins, caffeine, amino acids, minerals and tea polyphenols in Tieguanyin, which is closely related to brain development. Vitamins have the functions of strengthening the brain, improving eyesight and improving intelligence. Caffeine can increase the content of AMP (AMP is the synthetic raw material of ATP, which is the energy needed for brain tissue activities), thus making brain cells flourish. Amino acids, minerals and tea polyphenols have a certain protective effect on brain function and have a good influence on human intelligence. Therefore, drinking Tieguanyin regularly has a positive effect on preventing cancer, increasing intelligence and benefiting the brain.
Rotate the autonomic nerve to relieve stress.
Tieguanyin can improve the activity of autonomic nerve and parasympathetic nerve, prevent overeating due to excessive pressure, and eat hard because of anxiety, which is helpful to lose weight.
Improve energy metabolism
In Japan, water, green tea and Tieguanyin were tested to improve the basic metabolic function. The results show that water has no special effect. Green tea can improve the metabolism of 4 calories 1 hour, and Tieguanyin can improve the metabolism of 9 calories the most!
Moreover, the efficacy of Tieguanyin can last for 5 hours, so 1 cup of Tieguanyin at 300c.c can consume 40 calories (equivalent to walking fast 15 minutes and going up and down stairs 10 minutes).
Pintie Guanyin Tieguanyin is the best oolong tea, especially in Anxi, Fujian. Distinguishing the fine Tieguanyin is a profound knowledge. Famous tea teachers and old tea people in Anxi can distinguish the quality of tea by observing the appearance and smelling the fragrance. The highest can tell where the tea in Hecun is produced, how old the tea tree is, and the outstanding can also name the tea teacher. Mr. Lin, the general manager of Nanyanxuan Tea House in Changsha, was born in Anxi Tea Family and was an expert in tea science. According to him, laymen can distinguish the quality of tea by observing the shape, listening to the sound, watching the color, smelling the fragrance and tasting the rhyme.
Appearance: High-quality Tieguanyin tea leaves are curly and light, with green belly and dragonfly head, fresh and moist color, sand green, leaves with bright red spots and hoarfrost.
Listen: superior tea is tighter and heavier than ordinary tea. Put a small amount of tea leaves into the teapot, and you can hear the "clanking sound", which is crisp and crisp, followed by a dumb sound.
Color inspection: the soup is golden yellow, rich and clear. After the tea leaves are brewed and unfolded, the bottom of the leaves is thick and bright (one of the characteristics of Tieguanyin tea leaves is outward bending), with silky luster. This is the top, and the back is dark red soup.
Smell: The first-class Tieguanyin tea soup is delicious, and the lid of the cup has a faint fragrance when opened. Its unique fragrance is fragrant, rich and lasting, which makes people fascinated and has the reputation of "seven bubbles are more fragrant". Anxi Tieguanyin contains the richest kinds of aroma components, and the proportion of medium and low boiling point aroma components is obviously larger than that of oolong tea made from fresh leaves of other varieties of tea trees.
Pinyun: There is a quip in the ancients, "Smell the holy and wonderful fragrance before you taste the nectar". Take a sip, gently turn the root of your tongue, and you will feel the mellow, sweet and fresh tea soup, and swallow it slowly, sweet and dense, with endless charm. What about the unique "Guanyin rhyme"? Tea people can't explain it clearly so far, and they can only be left to future generations to judge, which is exactly the charm of Anxi Tieguanyin.
The brewing of Tieguanyin can be divided into eight ways according to its procedures:
White crane bathing (cup washing): Wash the tea set with boiling water.
Guanyin enters the palace (dripping tea): Tieguanyin tea is put into the tea set, and the amount of tea put accounts for about five points of the capacity of the tea set;
Hang the pot and make tea: raise the boiling water and pour it into the teapot or lid to turn the tea leaves;
Spring breeze blowing (scraping foam): gently scrape off the white foam floating on it with a pot cover or an ou cover to make it fresh and clean;
Guan Gong toured the city (pouring tea): Pour the tea soaked for one or two minutes into juxtaposed cups in turn;
Han Xin ordered the soldiers (order tea): when the tea is poured to one point, it should be dripped into each teacup bit by bit;
Taste the color of the soup (see tea): Observe the color of the tea in the cup.
Sipping rain (drinking tea): smell the fragrance first, then taste it, smell it while sipping, and drink lightly. Although you don't drink much, you can leave the fragrance on your teeth and cheeks. The bottom of your throat is sweet and makes you feel relaxed and happy. In the process of making tea, Tieguanyin in Anxi, Fujian and Tieguanyin in Muka, Taiwan Province have different rope-like appearance and baking degree after making tea, and also have their own characteristics in tea soup performance, especially in soaking methods.
Ten taboos for drinking Tieguanyin on an empty stomach. Drinking tea on an empty stomach will make you hate your hobbies, which is equivalent to "opening the door to rob you". Since ancient times, there has been a saying in China that people don't drink hollow tea.
Drinking hot tea in Chata is very irritating to the throat, esophagus and stomach. If you drink too hot tea for a long time, it may cause pathological changes in these organs. In addition, according to overseas research, people who often drink tea with a temperature over 62℃ are more likely to damage the stomach wall and have symptoms of stomach trouble. The temperature of drinking tea should be below 56 degrees Celsius.
Drinking Leng Cha warm tea, hot tea can make people feel refreshed and refreshed; Herbal tea has the side effects of cold coagulation and phlegm accumulation in the trunk.
Strong tea contains caffeine and theophylline, which is very irritating and easy to cause headaches and sleep.
If the brewing time is too long, the tea polyphenols, lipids and aromatic substances in tea can be semi-automatically oxidized, which not only makes the tea soup dark in color, poor in taste and low in fragrance, but also misses the value of careful identification. Because vitamin C, vitamin P and protein in tea are reduced due to oxygenation, the nutritional value of tea soup is greatly reduced; At the same time, due to the long idle time of tea soup and the pollution of the surrounding environment, there are a lot of microorganisms (cocci and actinomycetes) in tea soup, which is very unsanitary.
There are too many brewing times. Usually after brewing for 3-4 times, there is basically no tea juice. According to related attempts, the aqueous extract of the first brewed tea soup is 50%, the second brewed tea soup is 30%, the third brewed tea soup is 10%, and the fourth brewed tea soup is only 1-300%. After repeated brewing, some harmful components in tea will be leached, because trace harmful elements in tea are often leached at the end.
Drinking tea before meals will dilute saliva, make the mouth tasteless, and reduce the function of absorbing amino acids in a short time.
Drinking tea immediately after meals contains tannic acid, which can coagulate with amino acids and iron in food, affecting the absorption of amino acids and iron by human body.
Tea contains a lot of tannic acid, which can be decomposed into tannic acid, combined with many drugs and precipitated, which hinders absorption and affects drug efficacy. Therefore, as the saying goes, "tea moisture antidote".
Drinking overnight tea for too long, vitamins have been lost, and amino acids and sugars in tea will become nutrients for cocci and molds.
Because Tieguanyin contains more polyphenols, aldehydes and alcohols, these substances have little effect on healthy people, but for patients with poor gastrointestinal function, especially those with chronic gastrointestinal inflammation, these substances will stimulate gastrointestinal mucosa, and people with poor gastrointestinal function are more likely to induce stomach diseases, so it is not advisable to drink more. In addition, Tieguanyin also contains more caffeine, active alkaloids and a variety of aromatic substances, which will also excite people's central nervous system. Patients with neurasthenia and cardiovascular and cerebrovascular diseases should drink it in moderation, not before going to bed or on an empty stomach.