Abstract

Tea is one of the most consumed beverages worldwide. In fact, there are mainly three different kinds of tea. In China and many Southeast Asian countries, green tea is preferred. In Western countries and the rest of the world, the consumption of black tea is the highest. A fermentation process is necessary to produce black tea. Black tea can be further subdivided into naturally oxidized tea (although the term of fermentation is often used) and microbial fermented tea.