Catechin, commonly known as tea tannin, is a unique component of tea, which tastes bitter, astringent and astringent. It can be combined with caffeine in tea soup to reduce the physiological effect of caffeine on human body. Has antioxidant, antimutagenic, antitumor, blood cholesterol and low-density ester protein content reducing, blood pressure rising inhibiting, platelet aggregation inhibiting, antibacterial and antiallergic effects.
refresh
Caffeine has bitter taste and is an important component of tea soup. In black tea soup, it combines with polyphenols to form a complex; Emulsifying phenomenon will be formed when the tea soup is cold. Tea-specific catechins and their oxidative condensation products can slow down and maintain the excitement of decaffeination, so drinking tea can keep people awake and have more endurance.
3. Health care
Tea is rich in potassium, calcium, magnesium and manganese 1 1 minerals. Tea soup is an alkaline food with many cations and few anions. Can help body fluids maintain alkalinity and keep healthy.
It tastes slightly bitter and sweet. It can clear the brain, wake up, relieve polydipsia, induce diuresis, promote digestion and detoxify. Used for wind-heat attack, dizziness; Heat and thirst, or excessive drinking; Have a good sleep, you will be exhausted. It is not suitable for those with short and red urine, or those with edema and less urine; Accumulation of greasy food and indigestion; Damp-heat diarrhea
Tea (scientific name: Camellia sinensis(L.) O. Ktze), shrub or small tree, with hairless shoots. Leaves leathery, oblong or oval, blunt or sharp at the top, wedge-shaped at the base, shiny on the top, hairless or initially pilose on the bottom, serrated at the edge, and glabrous on the petiole. Flowers are white, and sometimes the stalks are slightly longer; Sepals broadly ovate to rounded, glabrous, persistent; Petals broadly ovate, slightly articulated at base, glabrous on back, sometimes pubescent; Ovary densely covered with white hairs; Style glabrous. Capsule 3 is spherical or 1-2, with a height of1.1-0/.5cm, and each ball has 1-2 seeds. The flowering period is from June 10 to February of the following year.
Wild species are all over the mountainous areas of the provinces south of the Yangtze River in China. They are small trees with big leaves, usually more than 10 cm long. For a long time, after a lot of cultivation, great changes have taken place in hair and leaf shape. Tea can be used as a beverage, which contains many beneficial ingredients and has health care function.
2065438+0710127 October, the list of carcinogens published by the International Agency for Research on Cancer of the World Health Organization was preliminarily sorted out for reference. Tea is in the list of three types of carcinogens.