Caffeine occurs naturally from the coffee tree indigenous to Ethiopia, and it may have been used as early as 850 AD in Upper Egypt, though it is considered a legend. Coffee is the seed of a cherry from the tree of the genus Coffea. The tree yields about one kilogram of coffee per year. There are over 25 different species of coffee, the three main ones being Robusta, Libaria, and Arabica. The Ethiopians mixed crushed dried coffee beans with rolled fat balls used as food on journeys. Its cultivation and use as a beverage occurred in Arabia. By the early 16th century, the beverage was well-established in the Islamic world. Through cultural diffusion, coffee was a fashionable drug of the 17th and 18th centuries. From thereon, coffee's popularity grew tremendously. America owes its present day coffee habits to the Boston tea party of 1773, which made coffee's availability easier. [Owen, Daniel]
Caffeine is an organic substance medically known as trimethylxanthine, and its chemical formula is C8H10N4O2. Caffeine is an alkaloid. There are numerous alkaloids. These compounds have