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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 - Softcover

Kiros, Alemayehu

 
9783843378628: 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
Softcover
ISBN 10: 3843378622 ISBN 13: 9783843378628
Verlag: LAP LAMBERT Academic Publishing, 2010

Inhaltsangabe

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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Über die Autorin bzw. den Autor

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

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Verlag
LAP LAMBERT Academic Publishing
Erscheinungsdatum
2010
Sprache
Englisch
ISBN 10 
3843378622
ISBN 13 
9783843378628
Einband
Taschenbuch
Anzahl der Seiten
56
Kontakt zum Hersteller
Nicht verfügbar
Verantwortliche Person
OmniScriptum
customerservice@vdm-vsg.de

Brivibas gatve 197
Riga
1039
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