What is the chemical formula of the ingredients of oolong tea?

There are three types of tea: fermented tea (black tea), unfermented tea (green tea) and semi-fermented tea.

Oolong tea belongs to some fermented tea (i.e., semi-fermented tea), the tea polyphenols contained in oolong tea have a special chemical structure theasinesin a, and tea contains protein, fat, more than 10 vitamins, as well as polyphenols, carotene, caffeine, and lipopolysaccharides, etc., tea is known to contain more than 350 kinds of chemicals, such as tannic acid, VA, VC, VB, etc. For this type of compound, it doesn't seem quite right to use the chemical formula, especially since tea is an alkaline drink that is used to neutralize sodium hydroxide. It needs to be studied.

After modern scientific separation and identification, oolong tea contains more than 450 kinds of organic chemical components and more than 40 kinds of inorganic mineral elements. The organic chemical components and inorganic mineral elements in tea contain many nutrients and medicinal components. The main organic chemical components are:

Tea polyphenols, plant alkalis, proteins, amino acids, vitamins, pectins, organic acids, lipopolysaccharides, sugars, enzymes, pigments, etc. The organic chemical components contained in Tieguanyin, such as tea polyphenols, catechins, and a variety of amino acids, are significantly higher than those of other teas. The main inorganic mineral elements are:

Potassium, calcium, magnesium, cobalt, iron, manganese, aluminum, sodium, zinc, copper, nitrogen, phosphorus, fluorine, etc. The inorganic mineral elements contained in Tieguanyin, such as manganese, iron, fluorine, potassium, sodium, etc., are higher than those of other teas.

Categories: Life >> common sense of life.

Problem description: What are the ingredients in oolong tea, how can there be a layer of oil-like things on the surface of the tea I brewed, does the tea contain oil?

Analysis: 1. Alkaloids: mainly caffeine, theophylline and theobromine, caffeine is a powerful central nervous system stimulant Hu Liang, which can improve the ability of thinking and activities and eliminate drowsiness.

2. Tea polyphenols: tea polyphenols are polyphenolic compounds with catechins as the main body. It can lower blood lipids, blood sugar, antioxidant, anti-aging, anti-aging, anti-radiation, sterilization, anti-inflammatory, and anti-cancer.

3. Lipopolysaccharide: Lipopolysaccharide can enhance the body's non-specific immunity, protect against radiation, and improve hematopoietic function.

Oolong tea belongs to the flat tea nature, neither belongs to the warm nor belongs to the coolness, the tea property is between black tea and green tea, oolong tea belongs to the semi-fermented tea, according to the form can be divided into cord-shaped, hemispherical, bundle-shaped and lumpy type, the tea soup after oolong tea brewing is golden in color, the fragrance is rich, and there is a refreshing feeling in the throat after drinking.

What is the tea property of oolong tea.

1. Flat tea.

Oolong tea belongs to flat tea, oolong tea, also known as green tea, belongs to a semi-fermented tea, tea between black tea and green tea, neither warm nor cool, the tea nature of oolong tea with lighter fermentation is closer to green tea, and the heavier fermentation is closer to black tea.

2. Types of oolong tea.

There are many kinds of oolong tea, if you distinguish from the place of origin, it can be divided into southern Fujian oolong tea, northern Fujian oolong tea, Guangdong oolong tea and Taiwan oolong tea, and from the morphology, it can be divided into four categories: cord-shaped, hemispherical, bundle-shaped and clumpy.

3. Tea soup characteristics.

The tea soup brewed from oolong tea has a strong aroma, if there is a hint of sweetness, and the color is golden yellow or amber, it feels very refreshing in the throat, and the fragrance can flow for a long time, which is loved by many tea lovers.

Oolong tea belongs to the category of semi-fermented teas.

There are many ways to classify tea, which are divided into non-fermented tea, semi-fermented tea, and fully fermented tea according to different fermentation procedures. It is divided into six basic types of tea and reprocessed tea, namely green tea, black tea and plum mill, oolong tea, yellow tea, white tea, and dark tea and reprocessed tea. Among them, oolong tea includes Anxi Tieguanyin, Frozen Oolong, Wuyi Dahongpao, Wuyi Cinnamon, Wuyi Narcissus, **Gui, Phoenix Single Fir, Alishan Oolong, Yongchun Buddha's Hand.

Oolong tea is a kind of tea, belongs to the category of oolong tea, it contains many sub-categories, oolong tea is also known as green tea, semi-fermented tea, a wide variety, in the Chinese tea category, unique characteristics.

Oolong tea and green tea are produced from the same tea plant, which is different from the fermentation process. It is made through picking, withering, shaking, semi-fermentation, baking and other processes, and the quality is excellent. After tasting oolong Zhaoshu Xun tea, you will feel fragrant and sweet aftertaste.

The effect of oolong tea on decomposing fat and bodybuilding is very significant.

It is mainly produced in Fujian, northern Fujian, southern Fujian, Guangdong and Taiwan provinces. In recent years, there has also been a small amount of production in Sichuan, Hunan and other places. Anxi Tieguanyin, Wuyi Rock Tea (Da Hong Pao), and Taiwan Frozen Top Oolong are particularly famous.

Oolong Tea Purchase:

1. Look at the appearance.

The outer shape of oolong tea in southern Fujian and northern Fujian is different, the one in southern Fujian is curly shaped, and the one in northern Fujian is in the shape of straight strips, all with gloss. The appearance of the tea is relatively loose, loose, not tight, dull, dark, and the tea leaves that have lost their freshness belong to the middle and lower grades or aged teas. At the same time, it is also necessary to see whether the appearance is neat and uniform, clean and free of debris, whether there are tea stems, tea pieces, tea powder and other substances.

Try to grab a handful of tea leaves with your hands and shake them, and feel that the tea leaves are light and heavy, the heavy ones are preferred, and the light ones are secondary.

2. Smell and taste.

After looking at the appearance of the tea, you can brew it and smell its fragrance and taste. The first thing to smell is to smell whether the floral fragrance is pure and what kind of fragrance it is; the second is to see whether the floral fragrance is high or low, a little floral fragrance or fermented fragrance; The third is to see if the fragrance of the flower family is the type of fragrance you like. When tasting its taste, you should pay attention to whether the taste is strong or light, and whether it has charm or variety.

3. Look at the tea dregs.

After tasting, observe the tea residue in the cup. The tea grounds should be flat and shiny, with red edges or red spots. You should also pinch the tea residue with your hands, which feels soft and thick, not hard and not stingy, indicating that the raw materials are good and the processing technology is properly mastered.

Oolong tea belongs to green tea and semi-fermented tea, and there are many varieties of it, which is a unique tea category in China.

Oolong tea is a high-quality tea made after picking, withering, shaking, frying, rolling, and roasting. Oolong tea evolved from the Song Dynasty tribute tea dragon group and phoenix cake, and was created around 1725 (during the Yongzheng period of the Qing Dynasty). After tasting, the teeth and cheeks are fragrant, and the aftertaste is sweet and fresh.

Oolong tea is called "beauty tea" and "bodybuilding tea" in Japan.

Oolong tea is a unique type of tea in China, mainly produced in northern Fujian, southern Fujian, Guangdong and Taiwan provinces. Sichuan, Hunan and other provinces also have a small amount of production. In addition to domestic sales in Guangdong, Fujian and other provinces, oolong tea is mainly exported to Japan, Southeast Asia, Hong Kong and Macao, and its main production area is Anxi County, Fujian Province and other places.

Characteristics of oolong tea:

1. Northern Fujian Oolong Tea: Northern Fujian Oolong Tea has a cord-like appearance, dark brown color, and a high and long-lasting aroma. There is also a kind of bundle-shaped oolong tea produced in Chong'an Octagonal Pavilion, which is to use colored silk threads to bundle several tea strips into a dragon's whisker shape and rush forward and then dry, so it is called "dragon whisker tea".

2. Minnan oolong tea: The best quality of Minnan oolong tea is Tieguanyin and Gui, Tieguanyin is made by Huiheng Jian with the buds and leaves of the Tieguanyin variety, and Gui is made with the buds and leaves of the Huangyan variety. These two kinds of oolong tea, the shape is in the shape of a green fly head, the soup is golden, there is an orchid fragrance, it is resistant to brewing, and there is still a residual fragrance after many brews.

3. Taiwan oolong tea: Taiwan oolong tea is mainly divided into three categories: lightly fermented oolong tea, medium-fermented oolong tea and heavily fermented oolong tea. The quality characteristics of fragrant oolong tea are green color (like green tea), yellow and green soup color after brewing, prominent floral fragrance, green at the bottom of the leaves, and basically no red edges.