Chapter 22

Caffeine in Coffee

Franciszek Burdan1,2     1Experimental Teratology Unit, Human Anatomy Department, Medical University of Lublin, Lublin, Poland     2St. John’s Cancer Center, Lublin, Poland

Abstract

Caffeine is the main active ingredient of coffee, tea, cocoa, and beverages. Acting as an antagonist of adenosine receptors, it is one of the most popular drugs and psychoactive substances. A regular cup of percolated, instant, and decaffeinated coffee contains 85, 60, and 3 mg of the alkaloid, respectively. However, the final concentration varies depending on the plant species, cultivation methods, and bean production process, whereas the daily intake has factors that include age and sociogeographical differences. Due to rapid absorption ...

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