The Determination of Caffeine Level of Wolaita Zone, Ethiopia Coffee Using UV-visible Spectrophotometer

Zewdu Tadesse Wondimkun; Abdisa Gebisa Jebessa; Liboro Hundito Molloro; Tesfaye Haile

doi:doi:10.11648/j.ajac.20160402.14

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The Determination of Caffeine Level of Wolaita Zone, Ethiopia Coffee Using UV-visible Spectrophotometer

Zewdu Tadesse Wondimkun, Abdisa Gebisa Jebessa, Liboro Hundito Molloro, Tesfaye Haile

Published in American Journal of Applied Chemistry (Volume 4, Issue 2)

Received: 15 February 2016 Accepted: 24 February 2016 Published: 23 March 2016

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Abstract

Coffee is an important commodity culturally, commercially and economically in the world. Because of its consumption in most countries in the world, it is important to investigate the exact amounts of its chemical constituents. Caffeine is one of the main components of coffee that affect the quality of coffee. In this research, rapid, simple, accurate, reproducible and cheap UV-Vis spectrometer was used for the quantification of caffeine in coffee and dichloromethane was used as a solvent for the coffee samples taken from Wolaita zone of five woredas. The results of this research show that the amount of caffeine of the coffee samples ranged from (450.13 to 579.60 (mg/L). The amounts of caffeine in Bolso Bomba coffee is the greatest, of all the other coffee samples studied in Wolaita Zone. On the other hand, Kindo Koisha and that of Bolso sore coffee has the least caffeine content compared to the other coffee samples measured. The caffeine content of Sodo Zuria coffee and Humbo coffee samples has an average amounts of caffeine.

Published in	American Journal of Applied Chemistry (Volume 4, Issue 2)
DOI	10.11648/j.ajac.20160402.14
Page(s)	59-63
Creative Commons	This is an Open Access article, distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution and reproduction in any medium or format, provided the original work is properly cited.
Copyright	Copyright © The Author(s), 2016. Published by Science Publishing Group

Keywords

Coffee, Caffeine, UV-visible Spectrophotometer

References

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[2]	Nebesny, E., & Grazyna, B., Evaluation of sensory attributes of coffee brews from Robusta coffee roasted under different conditions. Eur. Food Res, 2006; 224, 159–165.
[3]	Abrar S., & Nugussie M., Evaluation of coffee quality of Tigray Regional State, Ethiopia (Case study Raya Azebo District). Prudence Journal of Agricultural Research, 2013; 1(2), 3-6.
[4]	Behailu W., Abrar S., Nugussie M., &Solomon E., Coffee processing and quality research in Ethiopia, 2008.
[5]	Wanyika H. N., Gatebe E. G., Gitu L. M., Ngumba E. K., & Maritim C. W. Determination of caffeine content of tea and instant coffee brands found in the Kenyan market African. Journal of Food Science, 2010; 4(6), 353–358.
[6]	Ogah C. O., & Obebe O.T, Caffeine content of cocoa and coffee beverages in Lagos, Nigeria. Journal of innovative research in engineering and sciences, 2012; 3(1), 404-411.
[7]	Kapil K., Sumit K., & Yoti M., Estimation of caffeine in different beverages by Ultraviolet Spectroscopy. Int. J. of Pharm. & Life Sci. (IJPLS), 2011; 2(11), 1214-1215.
[8]	Forshed J., Erlandsson B., & Jacobsson P., Quantification of aldehydes impurities in poloxamer by 1H NMR spectroscopy. Analytica Chimica Acta, 2005; 552, 160-165.
[9]	Tadelech A., & Gholap A. V., Characterization of caffeine and determination of caffeine in tea leave using Uv-visible spectrometer. African Journal of Pure and Applied Chemistry. 2011; 5(1), 1-8.
[10]	Kalra K., Kumar S., & Maithani J., Estimation of Caffeine in different beverages by Ultraviolet Spectroscopy. International Journal of Pharmacy and Life Sciences, 2011; 2 (11), 1214-1215.
[11]	Smith AP., Caffeine at Work. Hum Psychopharmacology, 2005; 20(6), 441.
[12]	Rogers P., & Dernoncourt C., Regular caffeine consumption: a balance of adverse and beneficial effects for mood and psychomotor performance. Pharmacol Biochem Behav, 1998; 59(4), 1039-45.
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[14]	Mei M., Mohammed I., Badawi A., & Abdalla A., Determination of Caffeine in Some Sudanese Beverages by High Performance Liquid Chromatography. Pakistan Journal of Nutrition, 2012; 11 (4), 336-342.
[15]	Thompson R., & Keene K., The pros and cons of caffeine. The Psychologist (The British Psychological Society), 2004; 17 (12), 698–701.
[16]	Bibby scientific. The quantitative determination of caffeine in beverages and soft drinks using UV wavelength spectroscopy.jenwayhelp@bibby-scientific.com. www.jenway.com

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APA Style

Zewdu Tadesse Wondimkun, Abdisa Gebisa Jebessa, Liboro Hundito Molloro, Tesfaye Haile. (2016). The Determination of Caffeine Level of Wolaita Zone, Ethiopia Coffee Using UV-visible Spectrophotometer. American Journal of Applied Chemistry, 4(2), 59-63. https://doi.org/10.11648/j.ajac.20160402.14

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ACS Style

Zewdu Tadesse Wondimkun; Abdisa Gebisa Jebessa; Liboro Hundito Molloro; Tesfaye Haile. The Determination of Caffeine Level of Wolaita Zone, Ethiopia Coffee Using UV-visible Spectrophotometer. Am. J. Appl. Chem. 2016, 4(2), 59-63. doi: 10.11648/j.ajac.20160402.14

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AMA Style

Zewdu Tadesse Wondimkun, Abdisa Gebisa Jebessa, Liboro Hundito Molloro, Tesfaye Haile. The Determination of Caffeine Level of Wolaita Zone, Ethiopia Coffee Using UV-visible Spectrophotometer. Am J Appl Chem. 2016;4(2):59-63. doi: 10.11648/j.ajac.20160402.14

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@article{10.11648/j.ajac.20160402.14,
  author = {Zewdu Tadesse Wondimkun and Abdisa Gebisa Jebessa and Liboro Hundito Molloro and Tesfaye Haile},
  title = {The Determination of Caffeine Level of Wolaita Zone, Ethiopia Coffee Using UV-visible Spectrophotometer},
  journal = {American Journal of Applied Chemistry},
  volume = {4},
  number = {2},
  pages = {59-63},
  doi = {10.11648/j.ajac.20160402.14},
  url = {https://doi.org/10.11648/j.ajac.20160402.14},
  eprint = {https://article.sciencepublishinggroup.com/pdf/10.11648.j.ajac.20160402.14},
  abstract = {Coffee is an important commodity culturally, commercially and economically in the world. Because of its consumption in most countries in the world, it is important to investigate the exact amounts of its chemical constituents. Caffeine is one of the main components of coffee that affect the quality of coffee. In this research, rapid, simple, accurate, reproducible and cheap UV-Vis spectrometer was used for the quantification of caffeine in coffee and dichloromethane was used as a solvent for the coffee samples taken from Wolaita zone of five woredas. The results of this research show that the amount of caffeine of the coffee samples ranged from (450.13 to 579.60 (mg/L). The amounts of caffeine in Bolso Bomba coffee is the greatest, of all the other coffee samples studied in Wolaita Zone. On the other hand, Kindo Koisha and that of Bolso sore coffee has the least caffeine content compared to the other coffee samples measured. The caffeine content of Sodo Zuria coffee and Humbo coffee samples has an average amounts of caffeine.},
 year = {2016}
}

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TY  - JOUR
T1  - The Determination of Caffeine Level of Wolaita Zone, Ethiopia Coffee Using UV-visible Spectrophotometer
AU  - Zewdu Tadesse Wondimkun
AU  - Abdisa Gebisa Jebessa
AU  - Liboro Hundito Molloro
AU  - Tesfaye Haile
Y1  - 2016/03/23
PY  - 2016
N1  - https://doi.org/10.11648/j.ajac.20160402.14
DO  - 10.11648/j.ajac.20160402.14
T2  - American Journal of Applied Chemistry
JF  - American Journal of Applied Chemistry
JO  - American Journal of Applied Chemistry
SP  - 59
EP  - 63
PB  - Science Publishing Group
SN  - 2330-8745
UR  - https://doi.org/10.11648/j.ajac.20160402.14
AB  - Coffee is an important commodity culturally, commercially and economically in the world. Because of its consumption in most countries in the world, it is important to investigate the exact amounts of its chemical constituents. Caffeine is one of the main components of coffee that affect the quality of coffee. In this research, rapid, simple, accurate, reproducible and cheap UV-Vis spectrometer was used for the quantification of caffeine in coffee and dichloromethane was used as a solvent for the coffee samples taken from Wolaita zone of five woredas. The results of this research show that the amount of caffeine of the coffee samples ranged from (450.13 to 579.60 (mg/L). The amounts of caffeine in Bolso Bomba coffee is the greatest, of all the other coffee samples studied in Wolaita Zone. On the other hand, Kindo Koisha and that of Bolso sore coffee has the least caffeine content compared to the other coffee samples measured. The caffeine content of Sodo Zuria coffee and Humbo coffee samples has an average amounts of caffeine.
VL  - 4
IS  - 2
ER  -

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Author Information

Zewdu Tadesse Wondimkun

Department of Chemistry, College of Natural and Computational Science, Debre Berhan University, Debre Berhan, Ethiopia
Abdisa Gebisa Jebessa

Department of Chemistry, College of Natural and Computational Science, Debre Berhan University, Debre Berhan, Ethiopia
Liboro Hundito Molloro

Department of Chemistry, College of Natural and Computational Science, Debre Berhan University, Debre Berhan, Ethiopia
Tesfaye Haile

Department of Chemistry, College of Natural and Computational Science, Wolaita Sodo University, Wolaita Sodo, Ethiopia

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APA Style

Zewdu Tadesse Wondimkun, Abdisa Gebisa Jebessa, Liboro Hundito Molloro, Tesfaye Haile. (2016). The Determination of Caffeine Level of Wolaita Zone, Ethiopia Coffee Using UV-visible Spectrophotometer. American Journal of Applied Chemistry, 4(2), 59-63. https://doi.org/10.11648/j.ajac.20160402.14

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ACS Style

Zewdu Tadesse Wondimkun; Abdisa Gebisa Jebessa; Liboro Hundito Molloro; Tesfaye Haile. The Determination of Caffeine Level of Wolaita Zone, Ethiopia Coffee Using UV-visible Spectrophotometer. Am. J. Appl. Chem. 2016, 4(2), 59-63. doi: 10.11648/j.ajac.20160402.14

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AMA Style

Zewdu Tadesse Wondimkun, Abdisa Gebisa Jebessa, Liboro Hundito Molloro, Tesfaye Haile. The Determination of Caffeine Level of Wolaita Zone, Ethiopia Coffee Using UV-visible Spectrophotometer. Am J Appl Chem. 2016;4(2):59-63. doi: 10.11648/j.ajac.20160402.14

Copy | Download

@article{10.11648/j.ajac.20160402.14,
  author = {Zewdu Tadesse Wondimkun and Abdisa Gebisa Jebessa and Liboro Hundito Molloro and Tesfaye Haile},
  title = {The Determination of Caffeine Level of Wolaita Zone, Ethiopia Coffee Using UV-visible Spectrophotometer},
  journal = {American Journal of Applied Chemistry},
  volume = {4},
  number = {2},
  pages = {59-63},
  doi = {10.11648/j.ajac.20160402.14},
  url = {https://doi.org/10.11648/j.ajac.20160402.14},
  eprint = {https://article.sciencepublishinggroup.com/pdf/10.11648.j.ajac.20160402.14},
  abstract = {Coffee is an important commodity culturally, commercially and economically in the world. Because of its consumption in most countries in the world, it is important to investigate the exact amounts of its chemical constituents. Caffeine is one of the main components of coffee that affect the quality of coffee. In this research, rapid, simple, accurate, reproducible and cheap UV-Vis spectrometer was used for the quantification of caffeine in coffee and dichloromethane was used as a solvent for the coffee samples taken from Wolaita zone of five woredas. The results of this research show that the amount of caffeine of the coffee samples ranged from (450.13 to 579.60 (mg/L). The amounts of caffeine in Bolso Bomba coffee is the greatest, of all the other coffee samples studied in Wolaita Zone. On the other hand, Kindo Koisha and that of Bolso sore coffee has the least caffeine content compared to the other coffee samples measured. The caffeine content of Sodo Zuria coffee and Humbo coffee samples has an average amounts of caffeine.},
 year = {2016}
}

Copy | Download

TY  - JOUR
T1  - The Determination of Caffeine Level of Wolaita Zone, Ethiopia Coffee Using UV-visible Spectrophotometer
AU  - Zewdu Tadesse Wondimkun
AU  - Abdisa Gebisa Jebessa
AU  - Liboro Hundito Molloro
AU  - Tesfaye Haile
Y1  - 2016/03/23
PY  - 2016
N1  - https://doi.org/10.11648/j.ajac.20160402.14
DO  - 10.11648/j.ajac.20160402.14
T2  - American Journal of Applied Chemistry
JF  - American Journal of Applied Chemistry
JO  - American Journal of Applied Chemistry
SP  - 59
EP  - 63
PB  - Science Publishing Group
SN  - 2330-8745
UR  - https://doi.org/10.11648/j.ajac.20160402.14
AB  - Coffee is an important commodity culturally, commercially and economically in the world. Because of its consumption in most countries in the world, it is important to investigate the exact amounts of its chemical constituents. Caffeine is one of the main components of coffee that affect the quality of coffee. In this research, rapid, simple, accurate, reproducible and cheap UV-Vis spectrometer was used for the quantification of caffeine in coffee and dichloromethane was used as a solvent for the coffee samples taken from Wolaita zone of five woredas. The results of this research show that the amount of caffeine of the coffee samples ranged from (450.13 to 579.60 (mg/L). The amounts of caffeine in Bolso Bomba coffee is the greatest, of all the other coffee samples studied in Wolaita Zone. On the other hand, Kindo Koisha and that of Bolso sore coffee has the least caffeine content compared to the other coffee samples measured. The caffeine content of Sodo Zuria coffee and Humbo coffee samples has an average amounts of caffeine.
VL  - 4
IS  - 2
ER  -

Copy | Download