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     Advance Journal of Food Science and Technology


Biochemical Components of Shaded Coffee under Different Management Levels

1D.A. Odeny, 2G.N. Cheminingwa, 2S.I. Shibairo and 1C.W. Kathurima
1Coffee Research Institute, P.O. Box 4-00232, Ruiru
2Department of Plant Science and Crop Protection, University of Nairobi, P.O. Box 29053-00625, Nairobi
Advance Journal of Food Science and Technology  2016  9:519-526
http://dx.doi.org/10.19026/ajfst.12.3063  |  © The Author(s) 2016
Received: February ‎27, ‎2016  |  Accepted: May ‎13, ‎2016  |  Published: November 25, 2016

Abstract

This study was conducted to evaluate the effect of management and shade levels on some biochemical components of coffee. The study was carried out at the Kenya Agricultural and Livestock Research Organization, Coffee Research Institute (KALRO-CRI) coffee farm in Bungoma County and two farmers’ fields in Bungoma County, representing high, medium and low management levels. The coffee management levels were categorized depending on field operations and application of inputs. The different shade levels were based on the distances from the shade tree trunk: 0-1.5, 1.5-3, 3-4.5, 4.5-6 m, respectively and coffee trees under full sun. The shading level was estimated by measuring the Photosynthetic Photon Flux Density in μmol m-2/s using a Line Quantum Sensor and expressing it as a percentage of that obtained under full sun. Fully ripe cherries were harvested, wet processed and the wet parchment dried to final moisture content of 10.5 to 11%. Caffeine, trigonelline, total chlorogenic acids, oil and sucrose were determined using specific methodologies and quantified on dry weight basis. The results showed that biochemical components were affected significantly due to shade and management levels. Most of the biochemical components were positively correlated with shade and management levels. This showed the possibility of manipulating the two parameters to enhance the quality of coffee.

Keywords:

Caffeine, chlorogenic acids, management level, sucrose, shade level, trigonelline,


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Competing interests

The authors have no competing interests.

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This article is 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, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made.

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ISSN (Online):  2042-4876
ISSN (Print):   2042-4868
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