![]() Lighter-coloured Robusta coffee beans contain more caffeine (2 per cent) than Arabica (1 per cent) as the roasting process removes some of the caffeine.Ĭaffeine is also present in the cacao seed, which is used to make many of our favourite chocolate products. Green, black and white tea all come from the Camellia sinensis plant and contain similar amounts of caffeine, although Assam tea tends to have the higgest caffeine levels (red tea or Rooibos tea comes from a different plant and contains no caffeine).Ĭoffee beans mostly come from two varieties, Robusta and Arabica. It's also an ingredient in cold medications, appetite suppressants and pain relievers and is effective against headaches and drowsiness. ![]() We consume it in tea, coffee, soft drinks, energy drinks and chocolate. The scientific description of caffeine is 1,3,7-trimethylxanthine. Surprisingly, it's the leaves of the tea plant that contain the most caffeine, around 5 per cent compared to 1 to 2 per cent for coffee beans. Coffee or tea, anyone? They might be two of our favourite drinks, but how many of us know exactly what caffeine the drug behind the world's most consumed beverages (except for water) is up to in the body?Ĭaffeine, like nicotine, is legal, and, if not addictive, it's definitely habit-forming.Ĭaffeine is found in a number of plants: tea, coffee beans, guarana berries and cocoa nuts (although the quantity is quite small, around 0.2-0.4 per cent), where it acts as a toxin to defend against herbivores.
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