Moisture Dependent Physical Properties of Chironji (Buchanania LanzanjNut

摘要

Physical properties of Chironji nut were determined as a function of moisture content, varying from 9.98 to 17.06% (d. b.). Nut length, width, thickness, and geometric mean diameter increased linearly from 9.0 tol2.1 mm, 6.9 tol0.5 mm, 5.87 to 10 mm and 7.14 tol0.83 mm, respectively, with increase in moisture content from 9.98 to 17.06% (d.b.). Sphericity, volume and thousand seed weight also increased linearly from 0.79 to 0.89, 147.69 to 577.12 mm3, and 150 to 390 g, respectively. True density andbulk density decreased linearly from 854.0 to 798.6 kg.nr3 and 623.0 to 548.9 kg.m3, respectively; while porosity increased from 27.07 to 31.27 per cent. The highest static coefficient of friction was found on plywood surface. The static coefficient of friction increased from 0.25 to 0.31, 0.59 to 0.67, and 0.66 to 0.76 on sunmica, mild steel and canvas surfaces, respectively. The angle of repose increased linearly from 28.10 to 32.90° with the increase of moisture content.