Tea knowledge quiz 1. Understand the basic knowledge of tea.
Classification of tea: According to the manufacturing method of tea, tea in China can be divided into two parts: basic tea and reprocessed tea.
Basic tea: green tea, scented tea, black tea, green tea, yellow tea, white tea, and black tea. Processed tea: pressed tea, instant tea, canned tea, medicinal health tea, modeling process tea. What is green tea? Green tea is unfermented tea. Green tea is made from fresh tea through the processes of enzyme fixation, kneading and drying.
Such as Longjing Tea, Biluochun Tea, Huangshan Mao Feng, Yulu, etc. What is black tea? Black tea is fully fermented tea.
Black tea is made from fresh tea by withering, kneading, fermenting and drying. The tea soup and leaf bottom of black tea are red.
For example, Qihong in Anhui, Dianhong in Yunnan, Chuanhong in Sichuan, Minhong in Fujian, race black tea, etc. What is green tea? Green tea, also known as oolong tea, is semi-fermented tea.
Fresh tea leaves are made by sun-drying, air-drying, shaking, deactivating enzymes, kneading and drying. Green tea soup is clear and golden in color, which not only has the fragrance and floral fragrance of green tea, but also has the mellow taste of black tea.
Such as Dahongpao, Narcissus, Dan Cong, Phoenix, Tieguanyin, Huang Jingui, Arhat, Taiwan Province Oolong, etc. What is yellow tea? Yellow tea is light fermented tea, the basic technological process is the same as green tea, and it is stuffy yellow in the manufacturing process.
Its characteristic is yellow soup and yellow leaves. Such as Junshan Yinzhen, Wenzhou Huangtang, Huoshan Huangya, Guangdong Dayeqing, etc.
What is white tea? White tea is a specialty of Fujian. The appearance of the tea is covered with white fuzz, and it turns into white and dark green, so it is named white tea. White tea only goes through two processes: withering and drying, so as to keep the prototype of tea.
Such as Bai Mudan, Baihao Silver Needle, Gong Mei, Shou Mei, etc. What is black tea? Black tea goes through the processes of enzyme fixation, kneading, pile fermentation and drying. The tea is black in appearance, orange in soup color and yellow-brown in leaf bottom. It is mainly used as raw materials for pressed tea, such as Anhua black tea, Sichuan edge tea, Pu 'er tea and Liubao tea, which are produced in Sichuan, Yunnan and other provinces.
China's Top Ten Famous Teas: West Lake Longjing Huangshan Mao Feng Dongting Biluochun Anxi Tieguanyin Junshan Silver Needle Yunnan Pu 'er Tea Lushan Cloud Frozen Top Oolong Qihong Suzhou Jasmine Tea It is not easy to choose and buy tea. To get good tea, you need to master a lot of knowledge, such as the grade standards, prices and quotations of various teas, as well as the evaluation and inspection methods of tea. The quality of tea is mainly identified from four aspects: color, aroma, taste and shape, but for ordinary tea drinkers, when buying tea, they can only watch the shape and color of dry tea and smell the dry fragrance, which makes it more difficult to judge the quality of tea.
Here is a rough introduction to the method of identifying dry tea. The appearance of dry tea is mainly viewed from five aspects, namely, tenderness, rope, color, crushing and cleanliness.
1. Tenderness is the basic factor that determines the quality. The so-called "dry appearance, wet bottom" means tenderness. Generally, tea with good tenderness is easy to meet the appearance requirements of this kind of tea (such as "light, flat, flat and straight" in Longjing).
In addition, it can also be identified from the presence or absence of tea seedlings. Good front seedling and white hair show, which means good tenderness and good workmanship.
If the tenderness of raw materials is poor, no matter how good the workmanship is, there will be no sharp seedlings and white hairs on the tea strips. However, tenderness cannot be judged only by the number of fuzz, because the specific requirements of various teas are different. For example, the excellent Lion Peak Longjing is fuzz-free.
Moreover, fuzz is easy to fake, and a lot of manual work is done. The tender degree of bud leaves is judged by the fuzz, which is only suitable for "fuzz" teas such as Mao Feng, Maojian and Yinzhen.
What needs to be mentioned here is that the most tender fresh leaves have to be budded, and it is not appropriate to pick the bud heart unilaterally. Because the bud core is an imperfect part, its contents are not comprehensive, especially the chlorophyll content is very low.
Therefore, tea should not be made only by bud heart in order to pursue tenderness. 2. Cords and cords are certain shapes and specifications of various tea sets, such as fried green strips, round pearl tea, flat longjing tea, and granular red broken tea.
Generally, long strip tea is elastic, straight, strong, thin, round and flat, and light and heavy; Round tea depends on the elasticity, uniformity, weight and emptiness of the particles; Flat tea to see whether it is smooth and meets the specifications. Generally speaking, the rope is tight, the body is heavy, round (except flat tea) and straight, indicating that the raw materials are tender, the workmanship is good and the quality is excellent; If the appearance is loose, flat (except flat tea), broken, and there is smoke and burnt smell, it means that the raw materials are old, the workmanship is poor and the quality is poor.
Take the standard of green tea in Hangzhou as an example: first-class, second-class, third-class, fourth-class, fifth-class, sixth-class, fine-grained, fine-grained, fine-grained, fine-grained, tight-grained, tight-grained and slightly loose-grained. 3. Color The color of tea is closely related to the tenderness of raw materials and processing technology.
All kinds of tea have certain color requirements, such as black tea, green tea, oolong tea and black tea. However, no matter what kind of tea, good tea requires the same color, bright luster, oily and fresh. If the color is different, the depth is different, and it is dark and dull, it means that the raw materials are old and tender, the workmanship is poor and the quality is poor.
The color of tea also has a great relationship with the origin and season of tea trees. Such as alpine green tea, the color is green and slightly yellow, fresh and bright; Low camellia or flat tea is dark green and shiny.
In the process of making tea, due to improper technology, the color often deteriorates. When buying tea, it should be judged according to the specific tea purchased.
For example, Longjing, the best Shifeng Longjing, has a natural brown rice color and a light yellow tea before the Ming Dynasty. This is a major feature of Shifeng Longjing, which is obviously different from other Longjing in color.
Because the selling price of Shifeng Longjing is extremely high, tea farmers will create this color to pretend to be Shifeng Longjing. The method is to stir-fry the tea leaves a little too much to make the leaves yellow.
The difference between true and false is that the real lion peak is well-proportioned, bright and clean, light yellow and light green, with a faint fragrance in the tea fragrance; The fake lion peak has loose and empty horns, rough hair and yellowish color, and the tea smells like fried soybeans. It is really not easy to judge without many comparisons.
But once brewed, the difference is very obvious. The fake lion peak, which is over-fried, has no rich and tender fragrance that Longjing should have.
4. The whole crushing is the shape and degree of breaking of tea, with uniformity as the best and breaking as the second. The relatively standard tea evaluation is to put the tea in a plate (usually made of wood), so that under the action of rotating force, the tea can be layered in order according to its shape, size, weight, thickness and crushing.
Among them, the thick ones are in the top layer, the tight ones are concentrated in the middle layer, and the broken ones are deposited in the bottom layer. For all kinds of tea, middle-level tea is the best.
Top one.
2. What is the common sense of tea?
Common sense of tea (1)
Tea is a kind of excellent drink beneficial to human health, and more than half of the people in the world like to drink tea. Tea is regarded as a healthy drink because it contains a lot of beneficial substances, such as theanine, tea tannin, aromatic oil and vitamin C. Therefore, tea can refresh people, improve their thinking, improve their eyesight, eliminate fire and digestion, relieve summer heat, relieve constipation and diuresis. Especially nowadays, tea has three functions that other drinks can't do, namely, cancer prevention, cardiovascular disease prevention and radiation hazard prevention. In particular, green tea contains more tea polyphenols, which will be combined with carcinogens after being absorbed by the human body to decompose them and reduce their carcinogenic activity, thus inhibiting the growth of cancer cells. Chemical analysis and clinical trials show that the effective components contained in green tea can slow down the reproduction of leukemia virus and human immunodeficiency virus (AIDS). Experts believe that green tea is the most effective natural antidote for cancer, and tannic acid in green tea can prevent cancer cells from sticking to healthy cells, so it can reduce the spread of cancer. Therefore, drinking tea has been loved by more and more people.
I. Classification of Tea
According to the different processing methods of tea, it can be divided into six categories: black tea, such as Qihong and Dianhong. Green tea: West Lake Longjing, Huangshan Mao Feng, etc. White tea: Bai Mudan, Gong Mei, etc. Yellow tea: Junshan Silver Needle, Huoshan Yellow Tea, etc. Black tea: Liubao tea, Fuzhuan tea, etc. Green tea: (also called oolong tea) Tieguanyin, narcissus, etc.
According to the export of tea, it is divided into six categories: black tea, green tea, oolong tea, scented tea, white tea and pressed tea.
Second, the choice of water for making tea
The moisture is natural water and artificially treated water. Natural water includes spring water, river water, well water and falling water, and artificially treated water includes tap water. Distilled water and deionized water. Different dissolved substances in various waters have great influence on the quality of tea soup. Spring water, especially the spring water flowing slowly from the mountain, is the best for making tea, followed by river water, well water again, and rain water can also make tea. Generally, autumn rain is the best. Meiyu is the second, and thunderstorm is the worst.
Third, the requirements of water temperature for making tea
Generally, the temperature of tea water reaches the level of boiling and foaming, and the water temperature standard is about 90℃.
Fourth, the preservation of tea
The quality of tea itself will be greatly affected if it is not properly preserved after being bought back. Generally, the water content of tea leaves is less than 5%, which is more resistant to storage. Dry tea leaves can keep the color and taste of tea leaves for a long time when stored in a closed vessel. If the tea leaves are placed in direct sunlight, dry tea is easy to change color and affect the taste. The higher the grade of green tea and scented tea, the stronger the sensitivity to light. Temperature is also very important for the preservation of tea. Tea is easy to preserve at low temperature, and 0-5℃ is generally suitable. Tea leaves are unstable and changeable at room temperature.
Five, different seasons should drink different tea.
In spring, it is advisable to drink green tea because of dryness, which can quench thirst and clear away heat and detoxify. The weather is sultry in summer. At this time, you can also drink cold tea when drinking green tea. After brewing green tea, add some ice cubes, and it will be fresh and clean after drinking, so as to get rid of the heat. Autumn is crisp, but it is cold in the morning and evening. You can drink oolong tea or scented tea here. It is extremely cold in winter, and drinking black tea at this time can warm the bones, remove the cold and refresh the mind. What kind of tea to drink in different seasons should also be determined according to personal habits and physical conditions.
Six, tea and health
Drinking tea can excite the nerve center, eliminate fatigue, sleep less and think better. Drinking tea can supplement a variety of vitamins and improve human health. Drinking tea can promote food absorption and metabolism, improve human mineral level, and regulate human glucose metabolism to treat diabetes. Drinking tea can induce diuresis and enhance the excretion function of the kidney. Drinking tea can prevent aging and prevent coronary heart disease. Drinking tea can improve eyesight, diminish inflammation, detoxify, resist radiation injury and resist cancer.
References:
/wenhua/w *** x? id=463
3. Knowledge about tea
Tea in China is divided into six basic teas: green tea, oolong tea, black tea, yellow tea, white tea and black tea.
Six basic teas (specific tea name supplement)
1. Green tea West Lake Longjing; Huiming tea; Dongting Biluochun; Guzhu purple tea; Noon fairy; Huangshan Mao Feng; Cloud hair tip; Zeng Hou Yinjian; Xinyang Maojian tea; Pingshuizhu tea; Baohong tea; Shangrao white eyebrow; Camellia japonica; Bambusa Emei; Nan 'an Shiting Green; The sky is snowy and green; Mengding tea; Yongxi Huoqing; Cactus tea; Tianshan green tea; Yongchuan Xiuya; Xiuning usnea; Enshi Yulu; Duyun Maojian; Pit hair tip; Guiping Xishan tea; Old bamboo is generous; Quangang huibai; Eyebrow tea; Anji white tablets; Nanjing Yuhua Tea; Jingting green snow; Tian Zun Gong Ya; Beach tea; Shuanglong silver needle; Taiping monkey chief; Yuanmingcha; Bifeng in Xiazhou; Qinba is foggy; Civilized dragon beard; Lushan cloud; Anhua pine needle; Cast snow buds every day; * * * Maojian tea; Jiangshan green peony; Lu' an melon slices; Gao Qiao Yinfeng; Yunfeng and Panhao; Hanshui Yinsuo; Yunnan Baihao; Zunyi Mao Feng; Jiuhua Mao Feng; Wugaishan rice tea; The well is green; Shaofeng; Gulao tea; Shucheng orchid; State blue clouds; Small cloth rock tea; Huading cloud; Nanshan white hair bud; Tianzhu sword; Yellow bamboo and white hair; Magu tea; Cheyunshan Maojian; Guilin Maojian; Jiande tea; Huangpi Tea in Ruizhou; Shuangqiao Maojian; Qintang Maojian; Donghu Silver Millie; Jianghua Maojian; Dragon dance tea; Guishan rock green; Wuxi haocha; Linglong tea in eastern Guangxi; Tianmu Qingding; Xinjiang down tea; Jinshui Cuifeng; Jintan sparrow tongue; Guzhang Maojian; Shuangjing Green; Zhou da tie cha; Wenjun is green; Saussurea involucrata; Silver bud of lion's mouth; Yandang Mao Feng; Jiulong tea; Emei Mao Feng; Nanshan Shoumei; Xiangbo green; Suntan; The rocks are green; Mengding ganlu; Rui caokui; Hexi round tea; Putuo Buddha tea; Xuefeng Maojian; Qingcheng snow bud; Baoding green tea; Longzhong tea; Songyang silver monkey; Longyan xiebei tea; Meilong tea; Lanxi Mao Feng; Guanzhuang Maojian; The sea of clouds is white; Lotus heart tea; Jinshan cuiya; Errui; Cows arrive at tea; Buddha tea; Guiding Yunwu Tea; Tianchi Minghao; Tongtian rock tea; Lingyun white tea; Steamed green tea; Yunlin tea; Pan an Yunfeng; Lvchun Mayu tea; Dongbaichunya; Taibai terminal bud; Thousand Island Jade Leaf; Qingxi jade bud; Save forest tea; Xianju is green; Qijingtang green tea; Nanyue Yunwu Tea; Daguan Cuihua Tea; Meijiangcui tablets; Cuiluo; Wokeng tea; Yuyao Waterfall Tea; Cangshan snow green; Chess clouds; Huaguoshan Yunwu Tea; Narcissus velvet hook tea; Suichang silver monkey; Mojiang Yunzhen.
2. Oolong Wuyi Rock Tea; Wuyi cinnamon; Narcissus in northern Fujian; Tieguanyin; White-haired monkey; Bajiaoting asparagus tea; Huang Jingui; Yongchun bergamot; Anxi color species; Phoenix narcissus; Taiwan Province Oolong; Taiwan Province seed package; Dahongpao; Iron arhat; White crowned chicken; Water turtle
3. Black tea works; Lake red work; Dianhong gongfu; Min hong gong fu
Kung fu black tea; Ning Gongfu; Appropriate red work; The more red the work; Chuanhong Gongfu; Politics and hard work; Min Gongfu; Tanyang gongfu; Bai Lin works hard.
4. White tea with silver needles and white hairs; Bai Mudan; Gong Mei.
5. Yellow tea Junshan silver needle; Covered with yellow buds; Beigang Maojian tea; Luyuan Maojian; Huoshan yellow bud; Yongjiang baimaojian; Wenzhou Huangtang; West Anhui Huangda tea; Guangdong Dayeqing; Haima Palace Tea.
6. Black tea Hunan black tea; Old green tea; Sichuan edge tea; Liubao loose tea; Pu 'er tea.
Processed tea (supplement)
1. Press tea-like tea; Bamboo tube fragrant tea; Pu 'er square tea; Rice brick tea; Black brick tea; Flower brick tea; Fuzhuan tea; Xiangjian tea; Green brick tea; Kang brick; Golden tip; Square tea; Liubao tea; Round tea; Cake tea.
2. Jasmine tea with scented tea; Zhulan scented tea; Osmanthus tea; Honeysuckle tea; White orchid tea; Rose tea; Tortoise shell flower tea.
Third, the name of tea is actually not the "tea" of tea: twisted blue tea; Eucommia ulmoides tea; Pine needle rice tea; Apocynum tea; Ginseng tea; Chrysanthemum tea; Mulberry bud tea; Honeysuckle tea; Osmanthus tea; Thin jade tea; Thorn five eggplant tea; Insect tea; Persimmon leaf tea; Green bean tea; Xuanmi tea; Guoba tea; Laoying tea; Old ginger tea; Jujube tea; Bamboo leaf tea; Corn silk tea; Plantain tea; Danshen tea; Boat-fruited Sterculia tea; Senna leaf tea; Uncaria sinensis
4. Tea knowledge
Tea is divided into six categories: green tea, green tea (oolong tea), black tea, black tea, yellow tea and white tea.
Processed tea:
Re-processed from various kinds of crude tea or refined tea is called added tea, including scented tea, pressed tea, liquid tea, instant tea and medicinal tea.
Medicinal tea-medicinal tea is made by mixing medicines with tea leaves, so as to exert and strengthen the efficacy of medicines, facilitate the dissolution of medicines, increase the aroma and harmonize the taste of medicines. There are many kinds of this kind of tea, such as "noon tea", "ginger tea powder", "longevity tea" and "slimming tea".
Scented tea-this is a rare variety of tea colors. It is a product that enhances the fragrance of tea with floral fragrance, and it is very popular in China. Generally, green tea is used as tea blank, and a few people also use black tea or oolong tea as tea blank. It is made from fragrant flowers and scents according to the characteristic that tea leaves are easy to absorb peculiar smell. There are several kinds of flowers used, such as jasmine, sweet-scented osmanthus and pearl orchid, among which jasmine is the most.
1. Green tea West Lake Longjing; Huiming tea; Dongting Biluochun; Guzhu purple tea; Noon fairy; Huangshan Mao Feng; Cloud hair tip; Zeng Hou Yinjian; Xinyang Maojian tea; Pingshuizhu tea; Baohong tea; Shangrao white eyebrow; Camellia japonica; Bambusa Emei; Nan 'an Shiting Green; The sky is snowy and green; Mengding tea; Yongxi Huoqing; Cactus tea; Tianshan green tea; Yongchuan Xiuya; Xiuning usnea; Enshi Yulu; Duyun Maojian; Pit hair tip; Guiping Xishan tea; Old bamboo is generous; Quangang huibai; Eyebrow tea; Anji white tablets; Nanjing Yuhua Tea; Jingting green snow; Tian Zun Gong Ya; Beach tea; Shuanglong silver needle; Taiping monkey chief; Yuanmingcha; Bifeng in Xiazhou; Qinba is foggy; Civilized dragon beard; Lushan cloud; Anhua pine needle; Cast snow buds every day; * * * Maojian tea; Jiangshan green peony; Lu' an melon slices; Gao Qiao Yinfeng; Yunfeng and Panhao; Hanshui Yinsuo; Yunnan Baihao; Zunyi Mao Feng; Jiuhua Mao Feng; Wugaishan rice tea; The well is green; Shaofeng; Gulao tea; Shucheng orchid; State blue clouds; Small cloth rock tea; Huading cloud; Nanshan white hair bud; Tianzhu sword; Yellow bamboo and white hair; Magu tea; Cheyunshan Maojian; Guilin Maojian; Jiande tea; Huangpi Tea in Ruizhou; Shuangqiao Maojian; Qintang Maojian; Donghu Silver Millie; Jianghua Maojian; Dragon dance tea; Guishan rock green; Wuxi haocha; Linglong tea in eastern Guangxi; Tianmu Qingding; Xinjiang down tea; Jinshui Cuifeng; Jintan sparrow tongue; Guzhang Maojian; Shuangjing Green; Zhou da tie cha; Wenjun is green; Saussurea involucrata; Silver bud of lion's mouth; Yandang Mao Feng; Jiulong tea; Emei Mao Feng; Nanshan Shoumei; Xiangbo green; Suntan; The rocks are green; Mengding ganlu; Rui caokui; Hexi round tea; Putuo Buddha tea; Xuefeng Maojian; Qingcheng snow bud; Baoding green tea; Longzhong tea; Songyang silver monkey; Longyan xiebei tea; Meilong tea; Lanxi Mao Feng; Guanzhuang Maojian; The sea of clouds is white; Lotus heart tea; Jinshan cuiya; Errui; Cows arrive at tea; Buddha tea; Guiding Yunwu Tea; Tianchi Minghao; Tongtian rock tea; Lingyun white tea; Steamed green tea; Yunlin tea; Pan an Yunfeng; Lvchun Mayu tea; Dongbaichunya; Taibai terminal bud; Thousand Island Jade Leaf; Qingxi jade bud; Save forest tea; Xianju is green; Qijingtang green tea; Nanyue Yunwu Tea; Daguan Cuihua Tea; Meijiangcui tablets; Cuiluo; Wokeng tea; Yuyao Waterfall Tea; Cangshan snow green; Chess clouds; Huaguoshan Yunwu Tea; Narcissus velvet hook tea; Suichang silver monkey; Mojiang Yunzhen.
2. Oolong Wuyi Rock Tea; Wuyi cinnamon; Narcissus in northern Fujian; Tieguanyin; White-haired monkey; Bajiaoting asparagus tea; Huang Jingui; Yongchun bergamot; Anxi color species; Phoenix narcissus; Taiwan Province Oolong; Taiwan Province seed package; Dahongpao; Iron arhat; White crowned chicken; Water turtle
3. Black tea works; Lake red work; Dianhong gongfu; Min hong gong fu
Kung fu black tea; Ning Gongfu; Appropriate red work; The more red the work; Chuanhong Gongfu; Politics and hard work; Min Gongfu; Tanyang gongfu; Bai Lin works hard.
4. White tea with silver needles and white hairs; Bai Mudan; Gong Mei.
5. Yellow tea Junshan silver needle; Covered with yellow buds; Beigang Maojian tea; Luyuan Maojian; Huoshan yellow bud; Yongjiang baimaojian; Wenzhou Huangtang; West Anhui Huangda tea; Guangdong Dayeqing; Haima Palace Tea.
6. Black tea Hunan black tea; Old green tea; Sichuan edge tea; Liubao loose tea; Pu 'er tea.
Processed tea (supplement)
1. Press tea-like tea; Bamboo tube fragrant tea; Pu 'er square tea; Rice brick tea; Black brick tea; Flower brick tea; Fuzhuan tea; Xiangjian tea; Green brick tea; Kang brick; Golden tip; Square tea; Liubao tea; Round tea; Cake tea.
2. Jasmine tea with scented tea; Zhulan scented tea; Osmanthus tea; Honeysuckle tea; White orchid tea; Rose tea; Tortoise shell flower tea.
Third, the name of tea is actually not the "tea" of tea: twisted blue tea; Eucommia ulmoides tea; Pine needle rice tea; Apocynum tea; Ginseng tea; Chrysanthemum tea; Mulberry bud tea; Honeysuckle tea; Osmanthus tea; Thin jade tea; Thorn five eggplant tea; Insect tea; Persimmon leaf tea; Green bean tea; Xuanmi tea; Guoba tea; Laoying tea; Old ginger tea; Jujube tea; Bamboo leaf tea; Corn silk tea; Plantain tea; Danshen tea; Boat-fruited Sterculia tea; Senna leaf tea; Uncaria sinensis
5. Some knowledge about drinking tea
It can be classified into green tea, yellow tea, white tea, green tea, black tea and black tea according to color (or production process).
Green tea is non-fermented tea (fermentation degree is zero), yellow tea is slightly fermented tea (fermentation degree is 10-20%), white tea is slightly fermented tea (fermentation degree is 20-30%), green tea is semi-fermented tea (fermentation degree is 30-60%), and black tea is fully fermented tea (fermentation degree is 80-20%)
The general classification method is to divide China tea into basic tea and reprocessed tea. Basic teas are divided into six categories, namely green tea, yellow tea, black tea, white tea, green tea and black tea. The products processed with these basic teas as raw materials are collectively referred to as reprocessed teas, mainly including scented tea, pressed tea, extracted tea, fruity tea, medicinal health tea and tea beverage.
Second, the function of the basic components of tea
1, catechins:
Tea tannin, commonly known as tea tannin, is a unique ingredient of tea, with bitter, astringent taste and convergence. It can be combined with caffeine in tea soup to alleviate the physiological effect of caffeine on human body. It has antioxidant, anti-mutation, anti-tumor, reducing blood cholesterol and low-density ester protein content, inhibiting blood pressure rise, inhibiting platelet aggregation, antibacterial, and anti-allergic effects.
2. Caffeine:
With bitter taste, it is an important component of tea soup taste. In black tea soup, it combines with polyphenols to form a complex; Emulsifying phenomenon is formed when the tea soup is cold. Catechins and their oxidative condensation products peculiar to tea can slow down and sustain the excitement of decaffeinated caffeine, so drinking tea can keep people awake and have more endurance.
3. Minerals:
Tea is rich in minerals such as potassium, calcium, magnesium and manganese 1 1. Tea soup contains more cations and less anions, which belongs to alkaline food. Can help body fluids maintain alkalinity and keep healthy.
① Potassium: Promote the elimination of blood sodium. High blood sodium content is one of the causes of hypertension, and drinking more tea can prevent hypertension.
② Fluorine: It has the effect of preventing tooth decay.
③ Manganese: It has the effects of anti-oxidation and anti-aging, enhances immune function, and contributes to the utilization of calcium. Insoluble in hot water, it can be ground into tea powder to eat.
4. Vitamins:
Carotenoids: They can be converted into vitamins in human body, but they can only be supplemented by drinking and swallowing with tea.
②B vitamins and vitamin C: They are water-soluble and can be obtained from drinking tea.
5. Other functional components:
① Flavonoids and alcohols have the effect of strengthening microvascular wall and eliminating halitosis.
② Saponin has anti-cancer and anti-inflammatory effects.
(3) Aminobutyric acid is produced by forcing tea leaves to breathe anaerobically in the process of making tea, saying that gaba-tea can prevent hypertension.
Eight misunderstandings of drinking tea
I like to drink new tea.
Because of the short storage time, new tea contains more unoxidized polyphenols, aldehydes and alcohols, which has a strong * * * effect on human gastrointestinal mucosa and is easy to induce stomach diseases. Therefore, new tea should be drunk less, and new tea stored for less than half a month should be avoided.
Second, drink tea for the first time
Because tea is polluted by pesticides and other harmful substances in the process of cultivation and processing, there is always some residue on the surface of tea, so the first-pass tea should be abandoned because of its washing function.
Third, drink tea on an empty stomach
Drinking tea on an empty stomach can dilute the gastric juice, reduce the digestive function, and increase the absorption rate of water, resulting in a large number of bad components in tea entering the blood, causing dizziness, palpitation, weakness of hands and feet and other symptoms.
Fourth, drink tea after meals
Tea contains a large amount of tannic acid, which can react with iron in food to generate new substances that are difficult to dissolve. Over time, it will cause iron deficiency and even induce anemia. The correct way is: drink tea one hour after meals.
Five, have a fever to drink tea
Tea contains theophylline, which has the effect of raising body temperature. Drinking tea for patients with fever is tantamount to "adding fuel to the fire".
Six, patients with ulcers drink tea
Caffeine in tea can promote gastric acid secretion, increase gastric acid concentration, induce ulcers and even perforation.
Seven, drinking tea during menstruation
Drinking tea during menstruation, especially strong tea, can induce or aggravate menstrual syndrome. Medical experts have found that compared with those who don't drink tea, the probability of menstrual tension is 2.4 times higher for those who have tea habits, and it is 3 times higher for those who drink more than 4 cups of tea every day.
Eight, unchanged
The climate is different throughout the year, so the types of tea should be adjusted accordingly. It is advisable to drink scented tea in spring, which can emit cold evil accumulated in the body all winter and promote the hair growth of human yang; It is advisable to drink green tea in summer. Green tea tastes bitter and cold, which can clear away heat, relieve summer heat, detoxify, enhance gastrointestinal function, promote digestion, prevent diarrhea, skin furuncle infection, etc. It is advisable to drink green tea in autumn. Green tea is neither cold nor hot, which can completely eliminate the residual heat in the body, restore the sweetness and warmth, and make people feel refreshed; It is advisable to drink black tea in winter, which is sweet and warm, rich in protein and has certain nourishing function.
6. The knowledge of tea is 50 words
Tea, shrubs or small trees, with hairless shoots. Leaves leathery, oblong or oval, blunt or sharp at the apex, wedge-shaped at the base, shiny above, hairless below or initially pilose, serrated at the edge, and glabrous at the petiole.
The flowers are white, and the flower stalks are sometimes slightly longer; Sepals broadly ovoid to round, glabrous, persistent; Petals broadly ovoid, slightly jointed at the base, glabrous on the back, sometimes pubescent; Ovary densely covered with white hairs; Style glabrous. Capsule 3 is spherical or 1-2 is spherical, and its height is1.1-0/.5cm. Each ball has 1-2 seeds. Flowering period 10 to February of the following year.
Extended data:
Different nationalities and regions have developed different tea cultures, such as [congou], [tea ceremony], [afternoon tea] and so on. Nowadays, tea trees are widely planted all over the world. At present, the major tea-producing countries are China, Indian, Kenyan and Sri Lanka. The United Nations Food and Agriculture Officer: China accounts for nearly 40% of the world's tea production.
It is said that the tea picked early is called "tea/tea", the tea picked the second time is called "Yi", the tea picked the third time is called "Yi", and the tea picked late is called "Ming" (Ming is a tea bud, which is called "engaging in tea drinking" in [Daguan Tea Theory]), and the old leaves are called "Yi". It is also said that people in southwest Sichuan call tea a curse. The words "tea" and "Ming" are still widely used today. In recent years, there is another name "tea", which rose in Taiwan Province. Chakedao. Pan Xiangli. Beijing-Life, Reading and Knowledge Joint Publishing Company.
Sogou encyclopedia tea
7. I want some information about tea
Tea produced in China can be classified by producing area, season, market and production technology.
1. Classification of producing areas
Jiangbei tea area, Jiangnan tea area, South China tea area and Southwest tea area.
2. Seasonal classification
Spring tea, summer tea, autumn tea, winter tea.
3. Sales classification
Export tea, domestic tea, edge tea.
4. Production process classification
Divided into two categories, basic tea and reprocessed tea. Basic teas are divided into six categories-green tea, white tea, yellow tea, green tea/oolong tea, black tea and black tea according to the production process or the order of tea polyphenols oxidation degree. Re-processing tea is to use basic tea leaves as raw materials and re-process them to form various teas, such as scented tea, pressed tea, extracted tea, fruity tea and tea beverage.
Characteristics of six basic tea making processes;
Green tea: fixation
White tea: the sun withers
Yellow tea: stuffy yellow
Green tea: making green
Black tea: fermentation
Black tea: post-fermentation
As for the classification of reprocessed tea, the quality of all kinds of finished tea has been basically stable, and the quality has not changed much during the reprocessing of all kinds of tea. Although the quality of reprocessed teas, such as various kinds of scented teas, varies slightly, the quality basically does not exceed the systematicness of the tea, and it should still belong to the original tea.
┌ Steamed green tea (fried tea, high curative value, etc.)
├ Sun-dried green tea (Yunnan green, Sichuan green, Shaanxi green, etc.)
│┌┌┌┌┌┌┌┌┌┌┌┌┌┌┌┌┌┌┌┌┌┌┌┌┌┌┌┌948
┌ green tea ┼ fried green tea ┼ pearl tea (pearl tea, rain tea, show eyebrows, etc.)
Special fried green (Longjing, Dafang, Biluochun, Yuhuacha, pine needles, etc.)
│ │ ┌ Ordinary baking (Fujian baking, Zhejiang baking, Huizhou baking, Suzhou baking, etc.)
│└└┤Baking green tea
┌ Basic tea ┤└ Special baking green (Huangshan Mao Feng, Taiping Monkey Kui, Huading Yunwu, Gao Qiao Yinfeng, etc.)
│ │
│ ┌ ┌ White bud tea (white hair and silver needles, etc.)
White tea
│ └ White leaf tea (Bai Mudan, Gong Mei, etc.)
│ │ ┌ Yellow bud tea (Junshan silver needle, Mengding yellow bud, etc.)
│ │ yellow tea │ │ yellow tea (Beigang Maojian, Weishan Maojian, Wenzhou Huangtang, etc.)
│ └ Huangda Tea (Huoshan Huangda Tea, Guangdong Dayeqing Tea, etc.)
│ │ ┌ Wuyi rock tea (narcissus, color species, single fir, etc.)
Oolong in northern Fujian (narcissus, cinnamon, etc.)
│ │ Oolong Tea │ │ Minnan Oolong (Tieguanyin, Qilan, Huang Jingui, etc.)
│ │ (green tea) ├ Guangdong Oolong (phoenix single fir, phoenix narcissus, lingtou single fir, etc.)
Country │ └ Taiwan Province Oolong (Frozen Top Oolong, Wenshan Baozhong, Baihao Oolong, etc.)
Tea ││┌┌┌ small-scale black tea (zhengshan small-scale black tea, etc.)
Category │ │ Black tea │ │ Kung Fu black tea (Dianhong, Qihong, Chuanhong, Minhong, Yihong+-etc.)
││└ Red broken tea (leaf tea, broken tea, slice tea, end tea)
Hunan black tea (Anhua black tea, etc.)
│ └ Black tea └ Hubei old green tea (Pu Yin old green tea, etc.)
│ ├ Sichuan side tea (south side tea, west side tea, etc.)
│ └ Yunnan and Guangxi black tea (Pu 'er tea, Liubao tea, etc.)
│
│ ┌ scented tea (jasmine tea, Zhulan scented tea, rose black tea, osmanthus oolong, etc.)
│ │ Pressed tea (black brick, Fuzhuan brick, square tea, cake tea, Tuocha, etc.)
└ Processed tea ┤ Extracted tea (instant tea, concentrated tea, etc.)
└ Tea drinks (tea cola, tea soda, litchi black tea, lemon black tea, kiwi tea, etc.)