What is Laoshan green tea?
Laoshan green tea is produced in Laoshan District, Qingdao City, Shandong Province. Xiaoyangchun Laoshan green tea, located on the coast of the Yellow Sea, belongs to temperate maritime monsoon climate, with fertile soil and slight acidity, and is known as "Little Jiangnan in the North". 1959 Laoshan District successfully introduced tea from south to north, forming Laoshan green tea with unique quality. Laoshan green tea has the characteristics of thick leaves, pea fragrance, strong taste and resistance to brewing. According to the picking season of fresh leaves, it is divided into spring tea, summer tea and autumn tea. According to the raw materials and processing technology of fresh leaves, they are divided into curly green tea and flat green tea. From June 5, 2006 to 2006 10, AQSIQ approved the protection of Laoshan green tea geographical indication products. Laoshan green tea is a tea that took a lot of thought to take root and sprout in Qingdao, and it should be recognized. Laoshan green tea is a classic tea in China, with mellow and pleasant aroma and fresh and unique taste. With boiling water, lift the lid of the cup, lift the kettle, and lift the wrist when pouring water from the kettle. The water flows continuously for three times, and the water column is inexhaustible. This process is called "Phoenix Three Carvings". Pick up the tea bowl, look at the color first, then smell the fragrance, and then taste it; Don't forget to shave three times for tea. The more you shave, the more fragrant the tea will be.
Efficacy and function of Laoshan green tea
We all know that drinking tea is good for our health, and the efficacy and function of Laoshan green tea should not be underestimated. Compared with ordinary green tea, it has similar efficacy and function, and can maintain beauty. But even though Laoshan green tea has many functions, we can't drink too much. After all, drinking too much tea is harmful to our health.
1, odor removal and caries prevention effect of Laoshan green tea
Green tea contains trace element fluorine, which is also a common element in our toothpaste. At the same time, catechins can also inhibit the growth of bacteria and reduce the occurrence of dental plaque and periodontitis. Tea has the function of eliminating peculiar smell and helping to freshen the breath.
2. Anti-inflammatory and bacteriostatic effects of Laoshan green tea.
Catechins in tea have a certain inhibitory effect on bacteria in human body. If there is inflammation or ulceration, it can be washed or smeared with green tea, which can inhibit the growth of bacteria to some extent. In addition, tea polyphenols in green tea can remove harmful substances from the body, help clean the intestines and repair damaged wounds. Studies have shown that catechins in green tea can inhibit some bacteria that cause human diseases without harming the proliferation of beneficial bacteria in the intestine, so green tea has the function of whole intestine. Green tea contains fluorine, in which catechins can inhibit the action of cariogenic bacteria and reduce the occurrence of dental plaque and periodontitis. Tannic acid contained in tea has bactericidal effect, which can prevent food residues from breeding bacteria, so it can effectively prevent bad breath. When Cao Xueqin wrote A Dream of Red Mansions, he said that people in Jiafu gargled with tea after meals, while Su Dongpo also recorded that he gargled with inferior tea after every meal in order to strengthen his teeth. It can not only strengthen teeth, but also eliminate dental caries and dental plaque.
3. The weight-reducing and lipid-lowering effects of Laoshan green tea.
Both black tea and green tea can play a role in reducing weight and fat to a certain extent, because tea polyphenols and caffeine in tea can indirectly activate protein kinase and triglyceride lipolytic enzyme, help reduce the accumulation of fat cells, and then achieve the effect of reducing fat and losing weight. Green tea contains theophylline and caffeine, which can activate protein kinase and triglyceride lipolytic enzyme through multiple functions, reduce the accumulation of fat cells, and thus achieve the effect of losing weight.
4. Anti-aging
Antioxidants contained in green tea help to fight aging. Because in the process of human metabolism, if it is over-oxidized, it will produce a lot of free radicals, which are easy to age and cause cell damage. SOD (Superoxide Dismutase) is a kind of free radical scavenger, which can effectively remove excess free radicals and prevent the harm of free radicals to human body. Catechins in green tea can significantly improve SOD activity and scavenge free radicals.
5. Reduce blood lipids
Animal experiments made by scientists show that catechins in tea can reduce total cholesterol, free cholesterol, low-density lipoprotein cholesterol and triglycerides in plasma, and at the same time increase high-density lipoprotein cholesterol. Human experiments show that it can inhibit platelet aggregation and reduce the incidence of arteriosclerosis. Green tea contains flavonol, which has antioxidant effect, prevents thrombosis and platelet aggregation, and reduces cardiovascular diseases. Green tea itself contains tea gan ning, which can improve the toughness of blood vessels and make them not easy to rupture.
6, can improve indigestion.
Recent research reports show that green tea can help improve indigestion, such as acute diarrhea caused by bacteria, and drinking a little green tea can alleviate the condition.
Nutritional value of Laoshan green tea
The introduction of Laoshan tea started at 1959, which is the earliest experimental site of tea introduction from south to north in China and the birthplace of green tea in Jiangbei. Laoshan tea grows slowly, with thick buds and thick leaves, and is resistant to brewing. The climate in Laoshan area is warm and humid, and the frost period is longer than that in the south. In addition, the temperature difference between day and night is large, and the growth of tea trees is slow, so there is enough time to accumulate nutrients. Therefore, Laoshan tea is rich in nutrition, and contains a lot of polyphenols, caffeine, aromatic substances, protein, amino acids, vitamins and other ingredients beneficial to human health. Drinking Laoshan green tea has the effects of exciting, relieving fatigue, quenching thirst and detoxifying, promoting blood circulation, softening blood vessels, clearing heart fire and improving eyesight. In particular, the high content of amino acids in tea, the rich and fresh fragrance of tea soup, and the fragrance left on cheeks and teeth after drinking have made good tea lovers everywhere full of praise. Moreover, Laoshan green tea itself has a natural and unique fragrance of pea noodles and chestnut noodles. It is proved by scientific argumentation that green tea is one of the six health foods. Because Laoshan green tea contains Laoshan green tea, it has the effects of reducing fat, slimming, preventing cancer, resisting poison and sterilization, and prolonging life, so many people love to drink Laoshan green tea, especially those female compatriots who clamor for losing weight all day. They can choose Laoshan green tea to reduce fat and lose weight. This way is not only healthy and beneficial to the body and mind, but also plays a role in preventing cancer. Why not?
Difference of Three Handmade Tea in Laoshan Green Tea
Laoshan green tea can be divided into two categories in appearance: flat tea and twisted tea. As the name implies, flat tea is relatively flat in shape, and rolled tea is named after the curl of tea leaves. Flat tea can be divided into ordinary flat tea and pine needle/silver needle according to different processing techniques, among which pine needle/silver needle is the most tender and fragrant of several kinds of tea. Rolled tea is divided into "Biluochun" which is mainly baked and ordinary rolled tea which is mainly fried. After tea trees germinate in winter, you can pick new buds to make tea. Spring tea is rich in nutrition, high in aromatic substances and vitamins, fresh and refreshing in taste, rich in fragrance and compact in appearance. After picking spring tea, pine needles/silver needles are the first choice. On the one hand, because the leaves of spring tea are small, on the other hand, in order to keep the permeability of leaf aroma, a light process is chosen for processing. With the passage of time, fresh leaves gradually grow up and have a strong aroma, which is no longer suitable for making pine needles/silver needles, and will generally be used to make ordinary flat tea. With the further increase of temperature, the amount of aroma gradually increases, and fresh leaves are more suitable for making rolled tea with sufficient aroma and resistance to brewing.
In terms of price, since most of the sages in China have praised the fragrance and elegance of tea since ancient times, the elegant and elegant pine needles/silver needles are more popular. In addition, the output of tea in early spring is less, so the price is relatively high, followed by flat tea, and the output of Biluochun gradually increases, with the lowest price. As our consumers, tea tasting mainly depends on our own tastes and preferences. Therefore, you can simply understand that a batch of small fresh leaves picked in the earliest time sequence are made into pine needles/silver needles (few in quantity and high in price), then made into ordinary flat tea (few in quantity and high in price), and then made into rolled tea such as Biluochun (the largest in quantity and the lowest in price).