Some Physical Properties of Rice Kernels: Variety PR-106

The objective of this work was to determine some of the physical properties of PR-106 type of rice variety which may influence the rice processing operations. The physical properties Length or Longitudinal (L), Width (W), Thickness (T), Mass (M) and Volume (V) were measured at a moisture content of 13.34 0.53% (dry basis) and the following results were obtained: the average split length, width, thickness, unit mass and volume were 6.61 mm, 1.75 mm, 1.40 mm, 0.017 g, and 0.051 cm 3 respectively. The calculated physical properties like the geometric mean diameter, surface area, porosity, sphericity, true density and aspect ratio were 2.52 mm, 20.10 mm 2 , 47.07%, 38.28%, 1.521 g/ml and 26.58% respectively. The static coefficient of friction varied on three different surfaces from 0.217 on galvanized steel sheet, 0.239 on Plywood to 0.249 on glass with splits perpendicular to direction of motion, while the angle of repose was 34.86.