Caffeine is an alkaloid (nitrogenous organic molecule) methylxanthine that can be found naturally or artificially in a wide range of food products, such as, coffee, tea, chocolate, cola beverages, Yerba maté, guaraná, etc. It is usually recognised for its distinct bitter taste and for its properties as a stimulant of the central nervous system, heart, and respiration. In Australia, about 240mg of caffeine is consumed per person each day …showed first 75 words of 1297 total…

…showed last 75 words of 1297 total…audience. Bibliography Chemistry in the market place, Fourth Edition, Ben Selinger, HBJ Publishers, 1991, Australia Microsoft Encarta Reference Library 2005, Microsoft Corporation, 2004 http://en.wikipedia.org/wiki/Guarana http://coffeefaq.com/caffaq.html http://home.howstuffworks.com/caffeine.htm http://www.medicinehunter.com/guarana.htm http://www.bodyandfitness.com/Information/Herbal/Research/guarana.htm http://www.healthscout.com/ency/68/665/main.html http://www.education.theage.com.au/pagedetail.asp?intpageid=69&strsection=students&intsectionid=0