Black tea is completely fermented tea, but green tea is not. Black tea is warm, dispelling cold and warming stomach, while green tea is cool, clearing heat and refreshing. Their manufacturing processes are different.
Black tea: Fully fermented tea with a fermentation degree of 80-90%. In the production process, tea polyphenols contained in tea are oxidized into thearubigins by direct withering, rolling and shredding, and then completely fermented, thus forming dark black tea and black tea soup unique to black tea.
Green tea is not fermented tea. Green tea is made from suitable tea shoots through typical technological processes such as deactivation, rolling and drying. Its dry tea color and brewed tea soup and tea leaves are mainly green, hence the name green tea.
The characteristics of green tea retain more natural substances of fresh leaves. Among them, tea polyphenols and caffeine retain more than 85% of fresh leaves, about 50% of chlorophyll, and less vitamin loss, thus forming the characteristics of green tea with "clear soup color and strong taste convergence". Scientific research shows that the natural substances retained in green tea have certain anti-aging, anti-cancer, anti-cancer, sterilization and anti-inflammatory effects.