Caffeine (1,3,7-trimetilpurin-2 ,6-dione), Mol. 194,2 m; bestsv. bitter, odorless crystals, mp. 235 ° C, readily soluble. in hot water (1:2), SNSl 3, it is difficult – in cold water (1:60), ethanol (1:50), diethyl ether (1:1300). K-purine alkaloid isolated from coffee (Cofea arabica L.) Rubiaceae family (Rubiaceae). In addition, he is in tea (Theae sincnsis) family. Read the rest of this entry »
Large doses of caffeine may enhance muscle strength and endurance of human, scientists have found. In particular, consumption of coffee may improve productivity by 6%, research by the British University in Coventry. Scientists note that these findings may prove crucial in sports. The fact that caffeine is not currently a prohibited drug. Read the rest of this entry »
Caffeine, the psychoactive stimulant with a bitter taste, no smell. Effects of caffeine appears very quickly, within a few minutes after ingestion. By influencing the central nervous system (brain and spinal cord), caffeine increases respiration, increases the frequency and strength of heart contractions, speeds metabolism and thus creates a sense of vitality, relieves fatigue and sleepiness. Caffeine also has a diuretic effect and stimulates the constriction of blood vessels, which determines its ability to alleviate the headaches caused by the dilation of blood vessels of the head. In addition, it increases muscle tone and improves coordination. Read the rest of this entry »