Influence of Altitudes of Coffee Plants on the Alkaloids Contents of Green Coffee Beans

M. Gebrekidan, M. Redi-Abshiro, B. S. Chandravanshi, E. Ele, A. M. Mohammed and H. Mamo. Influence of altitudes of coffee plants on the alkaloids contents of green coffee beans. Chemistry International 5(4) (2019) 247-257.

11 Pages Posted: 15 Apr 2020

See all articles by Mulu Gebrekidan

Mulu Gebrekidan

College of Natural Sciences, Addis Ababa University, P.O. Box 1176, Addis Ababa, Ethiopia

Mesfin Redi-Abshiro

College of Natural Sciences, Addis Ababa University, P.O. Box 1176, Addis Ababa, Ethiopia

Bhagwan Chandravanshi

College of Natural Sciences, Addis Ababa University, P.O. Box 1176, Addis Ababa, Ethiopia

Estifanos Ele

College of Natural Sciences, Addis Ababa University, P.O. Box 1176, Addis Ababa, Ethiopia

Ahmed Mohammed

College of Natural Sciences, Addis Ababa University, P.O. Box 1176, Addis Ababa, Ethiopia

Mamo Mamo

Cellular and Molecular Biology, College of Natural Sciences, Addis Ababa University, P.O. Box 1176, Addis Ababa, Ethiopia

Date Written: October 1, 2019

Abstract

The influence of altitude of coffee plant and soil pH and organic carbon on alkaloid contents of green coffee beans was evaluated. The alkaloids content of 54 green coffee beans samples collected from coffee plants in Sidama, Illubabor, Jimma, Wellega and Gedeo grown at different altitudes (1515-2220 masl) was determined by high performance liquid chromatography. The caffeine and trigonelline were found in the range of 0.68-1.74% (w/w) and 0.68-1.44% (w/w), respectively. Theobromine was detected in only 18 samples and ranged 0.0186-0.32% (w/w). Theophylline was not detected in any of the green coffee beans samples. A weak negative correlation (R = -0.222) was found between the caffeine contents and the altitude of the coffee plants while a very weak positive correlation (R = 0.072) was found between the trigonelline contents and the altitude of the coffee plants. A strong negative correlation (R = -0.775) was found between the trigonelline contents and the caffeine content. A weak negative correlation was found between the caffeine contents and the soil organic carbon (R = -0.279) and between the trigonelline contents and the soil organic carbon (R = -0.101) while a weak positive correlation was found between the caffeine contents and the soil pH (R = 0.173) and between the trigonelline contents and the soil pH (R = 0.358) at which the coffee plants were grown.

Keywords: Coffee plants, Green coffee beans, Alkaloids, Caffeine, Trigonelline, Theobromine, Altitude, Soil organic carbon, Soil pH, Ethiopia

Suggested Citation

Gebrekidan, Mulu and Redi-Abshiro, Mesfin and Chandravanshi, Bhagwan and Ele, Estifanos and Mohammed, Ahmed and Mamo, Mamo, Influence of Altitudes of Coffee Plants on the Alkaloids Contents of Green Coffee Beans (October 1, 2019). M. Gebrekidan, M. Redi-Abshiro, B. S. Chandravanshi, E. Ele, A. M. Mohammed and H. Mamo. Influence of altitudes of coffee plants on the alkaloids contents of green coffee beans. Chemistry International 5(4) (2019) 247-257., Available at SSRN: https://ssrn.com/abstract=3407495 or http://dx.doi.org/10.2139/ssrn.3407495

Mulu Gebrekidan (Contact Author)

College of Natural Sciences, Addis Ababa University, P.O. Box 1176, Addis Ababa, Ethiopia ( email )

Mesfin Redi-Abshiro

College of Natural Sciences, Addis Ababa University, P.O. Box 1176, Addis Ababa, Ethiopia ( email )

Bhagwan Chandravanshi

College of Natural Sciences, Addis Ababa University, P.O. Box 1176, Addis Ababa, Ethiopia ( email )

Estifanos Ele

College of Natural Sciences, Addis Ababa University, P.O. Box 1176, Addis Ababa, Ethiopia ( email )

Ahmed Mohammed

College of Natural Sciences, Addis Ababa University, P.O. Box 1176, Addis Ababa, Ethiopia ( email )

Mamo Mamo

Cellular and Molecular Biology, College of Natural Sciences, Addis Ababa University, P.O. Box 1176, Addis Ababa, Ethiopia ( email )

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