Catechin, a type of tannin, is recently becoming more and more well known. It’s an ingredient that contributes to the elegant taste of green tea.

It’s also famous for anti-biotic and anti-oxidizing effects. Furthermore, it also works as a deodorant, lowers cholesterol level, and acts against allergies.


Carotene, well known ‘cause it’s contained in carrots, serve the effect of anti-oxidizing-activity. In green tea, the content of carotene is many times that of common yellowish-green vegetables. However, due to its low-deliquescence in hot water, it’s easier to take in carotene from drinking powdered green tea, powdered tea, or even from chewing tea leaves directly.


Caffeine, which is regarded as a synonym of coffee, is also plentiful in tea. Although it’s famous for keeping people awake or refreshing your mind, it also serves as cardiotonic & diuretic.

Vitamin C

Vitamin C, which lessens your stress, is also plentiful in tea. Nevertheless, it’s liable to get lost in the process of fermentation; its content in black tea (which is fermented) or oolong tea (which is semi-fermented) is extremely low. Green tea (unfermented) contains lots of Vitamin C.

Vitamin E

Vitamin E said to possess an anti-oxidizing effect and improve blood circulation & boost your immune system. The same as carotene, it’s unable to dissolve in hot water. It’s easily imbibed from drinking powdered tea, though.


It strengthens the enamel on the surface of your teeth to make your teeth stronger against the erosive effect of lactic acid. It’s also one of the substances in tea. Because it can refresh your mouth after meals, it’s often taken from drinking coarse tea. It also includes ingredients like furabonoido, which prevents foul breath and polyphenol, which prevents the cavity.