Black tea is a kind of fully fermented tea, which is the main tea in tea culture.Black tea is mainly produced in China, SriLanka,India, Kenya and other places.Black tea is produced by picking, withering, rolling, fermentation, drying and other steps.There isone more fermentation process than green tea.Fermentation refers to the oxidation of tea leaves in the air. Thefermentationreduces the tea polyphenols and tannic acids in tea leaves, and produces new components such as theaflavins andtheulein, as wellas aromatic substances such as alcohols, aldehydes, ketones and esters.
Black tea was called "black tea" when it was created.Black tea.During the processing of black tea, a chemical reaction centered onthe enzymatic oxidation of tea polyphenols took place. The chemical composition in fresh leaves changed greatly, and the reductionof tea polyphenols by more than 90% resulted in the production of new components such as theaflavin and theulein.
The kind of black tea is more, natural place of production is wider also, according to its processing method and the tea form thatproduce, can divide into 3 kinds again commonly: small kind black tea, time black tea and red broken tea.