People actually already enjoyed caffeinated beverages for many years. The earlier record of caffeine consumption dated back somehow in 2700BC during Chinese Emperor Shen Nung.
Caffeine is a member of the xanthine family. It is odorless, bitter taste and is highly soluble in hot water. Caffeine has effects on the body because it increases alertness, stimulates metabolism and contributes to an increase in dopamine levels in the blood.
Several study shows that tea leaves contain 3% caffeine by weight. There are a lot of factors determine the caffeine content in the dry leaf, such soil chemistry, altitude, tea variety and practices of cultivation.
Tea Beverage
