Effect of moisture content on some physical properties of soybean in three varieties

In this study some physical properties of soybeans varieties in Ardebil were determined. The effect of variety (Zan، Williams and L17) and moisture content (8، 10، 12، 14 and 16% dry basis) as the main parameters on the desired properties were studied using a completely randomized design with factorial layout. Physical properties consisted of dimensions (major، intermediate and minor diameters، geometric mean diameter (GMD) and sphericity)، weight، bulk and true densities، porosity، static coefficient of friction (over the surfaces of iron، wood، galvanized، steel and aluminum) and angle of repose. Results showed that، except for the true density، porosity and angle of repose the effect of variety on dimensions، weight، bulk density and static coefficient of friction was significant at 0. 1% probability level. Moisture content had a significant effect on the geometric properties، the properties of gravity and friction properties. Increased from 8% to 16% moisture (dry weight basis)، the geometric mean diameter، true density and porosity and seed weight of 6. 72 to 7. 24 mm 1. 186 to 1. 217 g/cm3، 178. 42 to 201. 21 and 39. 29% to 48. 66% increased heating. Bulk density and degree of spherical had a decreasing trend with increase moisture. Bulk density Zan، Williams and L17 respective 0. 668، 0. 684 and 0. 675 g/cm3، and the degree of spherical equivalent of 0. 822، 0. 887 and 0. 898 respective. The wood and steel surfaces had the maximum (0. 639) and the minimum (0. 483) static coefficient of friction، respectively.