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- Title
Development and assessment of Coffea Arabica and Coffea Canephorade-hulling machine.
- Authors
Ajav, E. A.; Mogekwu, I. N.
- Abstract
This work was aimed at the development and assessment of Coffea Arabica and Coffea Canephora de-hulling machine. Two units (de-huller and brusher) were incorporated in a single machine in order to remove the drudgery and constraints associated with the traditional de-hulling and separating method of both varieties of coffee seeds before it is processed into food condiment and flavoring agent. The response surface methodology (RSM) was employed to point out the relationship between the response functions and the process variables, of the de-hulling system for Coffea Arabica and Coffea Canephora. The performance rate of the machine was evaluated by varying the speed of rotation of the de-hulling shaft of the machine; 300, 400and 500r/min and moisture content; 10%, 15% and 20%, d.b. Based on these conditions, they worked optimally at the rate of 240kg/h. The result showed that the performance of the machine for Coffea Arabica and Coffea Canephora were (65.17% and 57.62%), (62.13% and 54.30%), (59.67% and 59.67%), (58.43% and 54.11%), (58.90% and 53.39%), (55.50% and 51.47%), (57.07% and 53.97%), (56.67% and 52.43%) and (56.23% and 52.19%) for (10%d.b, 300r/min),(15%d.b, 300r/min), (20%d.b, 300r/min), (10%d.b, 400r/min), (15%d.b, 400r/min), (20%d.b, 400r/min), (10%d.b, 500r/min), (15%d.b, 500r/min), and (20%d.b, 500r/min),respectively. Therefore, the machine is recommended for small and medium scale farmers that are involved in coffee cultivation and processing.
- Subjects
COFFEE; COFFEE processing; CONDIMENT industry; RESPONSE surfaces (Statistics); COFFEE growing
- Publication
Agricultural Engineering International: CIGR Journal, 2015, Vol 17, Issue 2, p267
- ISSN
1682-1130
- Publication type
Article