Determination of Caffeine in Roasted Coffee Using Optical Method: Effect of roasting time on caffeine content, effect of roasting temperature on . effect of temperature on pure caffeine
Language: English
Published by LAP LAMBERT Academic Publishing 2010-11-26, 2010
- Softcover
- New
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- Title
- Determination of Caffeine in Roasted Coffee Using Optical Method: Effect of roasting time on caffeine content, effect of roasting temperature on . effect of temperature on pure caffeine
- Author
- Alemayehu Kiros
- Publisher
- LAP LAMBERT Academic Publishing 2010-11-26
- Publication year
- 2010
- Condition
- New
- Binding
- Paperback
- Language
- English
- ISBN 10
- 3843378622
- 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.
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About the Author
Alemayehu Kiros Embaye, M.Sc degree in physics (Laser spectroscopy) from Addis Ababa University in 2007 and teaching undergraduate students at Dilla University department of physics and currently a PhD student at Addis Ababa University
"About the title" may belong to another edition of this title.
Chiron Media
Wallingford, United Kingdom
5-star seller
AbeBooks seller since August 2, 2010
Shipping rates from United Kingdom to U.S.A.
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