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Sinopsis
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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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.
Biografía del 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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Determination of Caffeine in Roasted Coffee Using Optical Method
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LAP LAMBERT Academic Publishing, 2010
ISBN 10: 3843378622
ISBN 13: 9783843378628
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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
Publicado por
LAP LAMBERT Academic Publishing, 2010
ISBN 10: 3843378622
ISBN 13: 9783843378628
Nuevo
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Determination of Caffeine in Roasted Coffee Using Optical Method
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LAP LAMBERT Academic Publishing, 2010
ISBN 10: 3843378622
ISBN 13: 9783843378628
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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
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LAP LAMBERT Academic Publishing 2010-11-26, 2010
ISBN 10: 3843378622
ISBN 13: 9783843378628
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Determination of Caffeine in Roasted Coffee Using Optical Method
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LAP LAMBERT Academic Publishing Nov 2010, 2010
ISBN 10: 3843378622
ISBN 13: 9783843378628
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Librería: BuchWeltWeit Ludwig Meier e.K., Bergisch Gladbach, Alemania
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Taschenbuch. Condición: Neu. This item is printed on demand - it takes 3-4 days longer - Neuware -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. 56 pp. Englisch. Nº de ref. del artículo: 9783843378628
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Determination of Caffeine in Roasted Coffee Using Optical Method
Publicado por
LAP LAMBERT Academic Publishing, 2010
ISBN 10: 3843378622
ISBN 13: 9783843378628
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Tapa blanda
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Condición: New. Dieser Artikel ist ein Print on Demand Artikel und wird nach Ihrer Bestellung fuer Sie gedruckt. Autor/Autorin: Kiros AlemayehuAlemayehu 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 Add. Nº de ref. del artículo: 5467728
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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 caffeine content, effect of temperature on pure caffeine
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LAP LAMBERT Academic Publishing, 2010
ISBN 10: 3843378622
ISBN 13: 9783843378628
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Taschenbuch. Condición: Neu. nach der Bestellung gedruckt Neuware - Printed after ordering - 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. Nº de ref. del artículo: 9783843378628
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Determination of Caffeine in Roasted Coffee Using Optical Method
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LAP LAMBERT Academic Publishing Nov 2010, 2010
ISBN 10: 3843378622
ISBN 13: 9783843378628
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Librería: buchversandmimpf2000, Emtmannsberg, BAYE, Alemania
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Taschenbuch. Condición: Neu. This item is printed on demand - Print on Demand Titel. Neuware -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.VDM Verlag, Dudweiler Landstraße 99, 66123 Saarbrücken 56 pp. Englisch. Nº de ref. del artículo: 9783843378628
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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 caffeine content, effect of temperature on pure caffeine
Publicado por
LAP LAMBERT Academic Publishing, 2010
ISBN 10: 3843378622
ISBN 13: 9783843378628
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Librería: preigu, Osnabrück, Alemania
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Taschenbuch. Condición: Neu. Determination of Caffeine in Roasted Coffee Using Optical Method | Effect of roasting time on caffeine content, effect of roasting temperature on caffeine content, effect of temperature on pure caffeine | Alemayehu Kiros | Taschenbuch | 56 S. | Englisch | 2010 | LAP LAMBERT Academic Publishing | EAN 9783843378628 | Verantwortliche Person für die EU: OmniScriptum GmbH & Co. KG, Bahnhofstr. 28, 66111 Saarbrücken, info[at]akademikerverlag[dot]de | Anbieter: preigu. Nº de ref. del artículo: 107209424
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