• ASWATHY SUDHAKAR S
• VIMAL NAYAN V S
• MUHSINA RASHEED

Caffeine (1,3,7 – trimethyl xanthin- 2,6-dihydroxy purine) constitutes one of the crucial groups of plant alkaloids. It is present in considerable amounts in substances such as cocoa, kola nuts and leaves of tea and coffee plants. Caffeine has pharmacological effects on central nervous system, heart, peripheral and central vasculature, renal, gastrointestinal and respiratory system. Caffeine has been shown to affect mood, stamina, the cerebral vascular system, and gastric and colonic activity. Caffeine is used to restore mental alertness or wakefulness during fatigue or drowsiness. Caffeine is also found in some headache and migraine medications, in certain dietary supplements used for weight loss, and in many popular energy drinks. It has side effects like increase in blood pressure and vasoconstriction. Long term consumption at sufficiently high doses has been associated with chronic arterial stiffness. Coffee and caffeine can affect gastrointestinal motility and gastric acid secretion. In the present study, we had performed a successive method for the isolation of caffeine from three tea samples and two coffee samples. The percentage of caffeine content in all the five samples were calculated. The products isolated were confirmed as caffeine by melting point detection and infrared and UV-Visible spectroscopic techniques. The data obtained were in close agreement with the standard sample of caffeine in literature.

Caffiene, extraction, xanthoid

"“EXTRACTION OF CAFFEINE FROM SOME TEA AND COFFEE SAMPLES”", International Journal of Emerging Technologies and Innovative Research (www.jetir.org), ISSN:2349-5162, Vol.5, Issue 6, page no.627-647, June-2018, Available :http://www.jetir.org/papers/JETIR1806685.pdf

"“EXTRACTION OF CAFFEINE FROM SOME TEA AND COFFEE SAMPLES”", International Journal of Emerging Technologies and Innovative Research (www.jetir.org | UGC and issn Approved), ISSN:2349-5162, Vol.5, Issue 6, page no. pp627-647, June-2018, Available at : http://www.jetir.org/papers/JETIR1806685.pdf