Tea is one the most widely consumed beverages in the world in the last 5000 years which was originally used as medicine. On the basis of leaf processing, tea leaves can be categorized into Green tea, Black tea and Oolong tea. These 3 types of tea leaves are produced from the leaves of the plant Camellia sinensis. Green tea is produced by steaming, panfrying and drying the Camellia sinensis leaves without fermentation whereas the black tea and oolong tea are fermented. Hence it can retain the important molecules such as polyphenols, which are said to be responsible for many health benefits.