The Google Doodle honoured German analytical chemist Friedlieb Ferdinand Runge (February 8, 1794 -25 March 1867) on his 225th birth anniversary Thursday. Runge is best remembered for identifying caffeine, the psychoactive drug present in coffee beans which is responsible for stimulating the central nervous system. Goethe asked Runge to study and identify the chemical composition of coffee beans. Runge successfully identified and separated the chemical caffeine from Arabic mocha beans. Runge died 15 years later, on March 25, 1867, at the age of 73.

Source: Indian Express February 07, 2019 19:26 UTC