Determination of Some Physical Properties of Wild Stone Pine (Pinus pinea L.) Kernel and Pits Grown in Turkey

Abstract

In this research some physical properties at different moisture content were determined in developing Pinus pinea L. fruits (stone pine) from Mut (İçel), Turkey. Physical properties of stone pine kernel and pits were determined as a function of moisture content in the range of 7.25-20.52% dry basis (d.b.) for pit and 8.82-28.84 % (d.b.) for kernel. The correlation coefficient between length and mass of stone pine pit and kernel were found significant at 7.25% moisture content (d.b.) for pit and 8.82% moisture content (d.b.) for kernel. As the moisture content increased, the sphericity, thousand grain mass, bulk density, true density, terminal velocity, and projected area increased for stone pine pit and kernel. The coefficient of static friction of stone pine pit and kernel increased against the surface of two structural materials, namely, a galvanised steel sheet (0.343-0.489) and plywood sheet (0.5-0.521) for stone pine pit, and a galvanized steel sheet (0.383-0.435) and plywood sheet (0.442-0.471) for stone pine kernel as the moisture content from 7.25 to 20.52% and 8.82 to 28.84% (d.b.), respectively. Both the rupture strength value of stone pine pit and the hardness of stone pine kernel decreased as the moisture content increased.

Keywords

• Stone pine, Pinus pinea, kernel, pit, physical properties

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