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Determination of Some Physical Properties of Dried Jujube Fruit

Mansoureh Pourjafar
DOI: http://dx.doi.org/10.21013/jas.v8.n2.p1
Abstract

Some physical properties of Iranian Jujube fruit were evaluated. Jujube fruit samples mean values of length, width, thickness were found as 18.005mm, 14.96 mm, 15.26 mm. Arithmetic mean diameter, geometric mean diameter were found as 16.08mm, 16.01 respectively and surface area, Sphericity, porosity, mass, volume, bulk density and true density were also found as: 805.65 mm2 ,89%, 77.2%, 1.45gr, 2.61 cm3 , 0.23gr cm-3, 0.55gr cm-3 respectively. Projected area perpendicular to length, width and thickness were measured as, 152.03 mm2, 220.02 mm2, 271.4mm2 respectively. With comparison between friction coefficients on different surface for Jujube fruit. The results showed that the static coefficient of friction was more than dynamic coefficient of friction.The tests done on the galvanized steel surface, plywood and glass surface. The most coefficient of friction was found on the plywood surface and the least coefficient of friction was measured on the glass surface.

Keywords
Jujube fruit, Physical properties, Engineering parameters, geometric parameters
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