Determination of Caffeine in Roasted Coffee Using Optical Method (Paperback) (ISBN-13: 9783843378628)

Shorttitle In this work a simultaneous determination of caffeine content was performed in sample of Sidama (Ethiopia) coffee, before and after roasting at either different temperature (140-2100c) or different exposure time (4-10min). A UV/VIS spectrophotometer method is used. A modest loss of caffeine was verified both in the roasting time and roasting temperature. Rate constant for chemical reactions at 2000 c were determined. The result shows weight loss increases during roasting. For pure caffeine molar decadic absorption coefficient and translational dipole moment were calculated.

Author: Alemayehu Kiros
ISBN-10: 3843378622
ISBN-13: 9783843378628
Publisher: LAP Lambert Academic Publishing
Language: English
Published: 11/26/2010
Pages: 56
Format: Paperback
Weight: 0.21lbs
Size: 9.00h x 6.00w x 0.13d