article · American Journal of Applied Chemistry
Coffee is an important commodity culturally, commercially and economically in the world. Because of its consumption in most countries in the world, it is important to investigate the exact amounts of its chemical constituents. Caffeine is one of the main components of coffee that affect the quality of coffee. In this research, rapid, simple, accurate, reproducible and cheap UV-Vis spectrometer was used for the quantification of caffeine in coffee and dichloromethane was used as a solvent for the coffee samples taken from Wolaita zone of five woredas. The results of this research show that the amount of caffeine of the coffee samples ranged from (450.13 to 579.60 (mg/L). The amounts of caffeine in Bolso Bomba coffee is the greatest, of all the other coffee samples studied in Wolaita Zone. On the other hand, Kindo Koisha and that of Bolso sore coffee has the least caffeine content compared to the other coffee samples measured. The caffeine content of Sodo Zuria coffee and Humbo coffee samples has an average amounts of caffeine.
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DOI: 10.11648/j.ajac.20160402.14
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