Spectroscopy of major Biochemical Compounds of Coffee Beans: Caffeine, Chlorogenic, UV-Vis Spectroscopy

 
9783838375601: Spectroscopy of major Biochemical Compounds of Coffee Beans: Caffeine, Chlorogenic, UV-Vis Spectroscopy
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The molecular spectroscopy which works in the wavelength regions of UV-Vis have various applications. For quantitative determination species in mixtures, characterization of pure compound, identification of the presence or absence of a particular species in a mixture or certain functional groups in a compound. It also used to study self-association, hetero-association and thermodynamic properties of compound.Thus, in this research, the contents of caffeine and chlorogenicacids in coffee beans have been investigated by spectroscopic and theoretical methods.In addition, the optical transition properties of caffeine, caffeic and 5-caffeoylquinic acids were determined in different solvents by integrating the absorption coefficients. Moreover, the concentration dependent self-association of caffeic, 5-caffeoylquinic acids and their hetero- association were analyzed by dimer model and Benesi- Hildebrand approaches. The thermodynamic parameters, enthalpy, Gibbs free energy and entropy of dimerzation reactions were calculated from van't Hoff equation.

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About the Author:

Abebe has obtained his BSc and Msc in Physics from Addis Ababa University, Ethiopia. He has published several papers on International journals related to spectroscopy of major biochemical compounds in coffee beans. Abebe has 17 years work experinces in teaching undergradute courses at university, teachers college and TTI.

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Book Description LAP Lambert Acad. Publ. Okt 2010, 2010. Taschenbuch. Condition: Neu. Neuware - The molecular spectroscopy which works in the wavelength regions of UV-Vis have various applications. For quantitative determination species in mixtures, characterization of pure compound, identification of the presence or absence of a particular species in a mixture or certain functional groups in a compound. It also used to study self-association, hetero-association and thermodynamic properties of compound.Thus, in this research, the contents of caffeine and chlorogenicacids in coffee beans have been investigated by spectroscopic and theoretical methods.In addition, the optical transition properties of caffeine, caffeic and 5-caffeoylquinic acids were determined in different solvents by integrating the absorption coefficients. Moreover, the concentration dependent self-association of caffeic, 5-caffeoylquinic acids and their hetero- association were analyzed by dimer model and Benesi- Hildebrand approaches. The thermodynamic parameters, enthalpy, Gibbs free energy and entropy of dimerzation reactions were calculated from van't Hoff equation. 112 pp. Englisch. Seller Inventory # 9783838375601

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