Greener Journal of Science, Engineering and Technological Research

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Olaoye et al

Greener Journal of Science, Engineering and Technological Research Vol. 3 (5), pp. 160-165, May 2013.

ISSN: 2276-783

Research Paper

Manuscript Number: 112712301


Some Physical and Mechanical Properties of Black-Plum (Vitex doniana) Fruits


*Olaoye I.O., Okegbola O.I. and Ogunrombi I.G.


Department of Agricultural Engineering, The Polytechnic Ibadan, Ibadan. Nigeria


*Corresponding Author’s Email: isaacolaoye @ yahoo. com


Some physical and mechanical properties of vitex doniana fruits were studied. The average fruit length, width and thickness were 26.79mm, 24.08mm and 20.16mm respectively. The average fruit mass was 11.12g. The average sphericity and aspect ratio of the fruit were 87.79% and 88.35% respectively. The average true density and bulk density of the fruit bed were 92.87kg/m3 and 47.82kg/m3 respectively. The average porosity of the bed of the fruit was 46.95%. The angle of repose for the fruit on plywood, galvanized sheet and mild steel sheet were 6.00, 7.00 and 6.00 respectively. Forces at peak for both longitudinal and transverse position were 1450.5N and 1382.2N respectively. Also, the energies at peak for both longitudinal and transverse position were 3.2Nm and 2.7Nm respectively. The stresses at break for both longitudinal and transverse positions were 2.88N/m2 and 2.37N/m2 respectively. The design of any extraction device for this fruit can utilize these physical and mechanical properties. 

Keywords: herbaceous, quadrangle, branch- lets, woodland, savannah region.

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