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Research Journal of Engineering and Technology
Year : 2018, Volume : 9, Issue : 3
First page : ( 241) Last page : ( 252)
Print ISSN : 0976-2973. Online ISSN : 2321-581X.
Article DOI : 10.5958/2321-581X.2018.00033.8

Effects of Active Grids Gap's Adjustment on Technical Performances of a Power-Driven Dehuller Devised for African Locust Beans Parkia Biglobosa

Ahouansou Roger Houêchéné1,2,*, Bagan Gontrand Comlan1,3, Agbobatinkpo Pélagie Bidossessi4, Sanya Emile Adjibadé1, Vianou Antoine Cokou1, Hounhouigan Djidjoho Joseph4

1Laboratory of Applied Energetic and Mechanic (LEMA), Polytechnic School of Abomey-Calavi (EPAC), University of Abomey-Calavi (UAC). 01 POB: 2009, Cotonou, Republic of Benin

2Program of Agricultural and Food Technology (PTAA), National Institute for Agricultural Research of Benin (INRAB). POB: 128, Porto-Novo, Republic of Benin

3School of Agricultural Mechanization and Mechanical Construction (EMACOM); National University of Agriculture of Porto-Novo, Republic of Benin

4Laboratory of Food Sciences (LSA)-Faculty of Agronomic Sciences (FSA), University of Abomey-Calavi (UAC). 03 POB: 2819 Jericho, Cotonou, Republic of Benin

*Corresponding Author E-mail: gnankis@gmail.com

Online published on 20 December, 2018.


African locust bean (ALB) seeds are processing into afitin through a succession of operations, of which dehulling of pre-cooked seeds. Dehulling is laborious for processors. To remove this constraint, a motorized dehuller has been developed. This study aims to evaluate the effects of the setting gap between the fixed and mobile grids of dehuller on these performances. Boiled ALB seed were subjected to mechanical dehulling with inter grid gap varying from 2 to 25 mm. The obtained results showed that, when the gap varies from 2 to 25 mm, the dehulling rate decreases from 100 to 0%, the breaking rate from 50.83% to 0%. The machine performs well when ALB seed cooked during 4 h and grids’ gaps in the range of 5 to 15 mm. The values of these cited parameters that give the best performance are obtained when gap's adjustment is fixed at 9 mm.



Breaking rate Dehuller, Dehulling index, Decorticator, Limit value, Nere, Processor.


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