Document Type : Research Paper
Authors
Abstract
Determination of physical properties of agricultural products is very important for optimization design of processing, planting and harvesting machines. Physical properties affect on the losses reducing and quality protection of products at going through of postharvesting process. At this study, the effect of grain moisture content on some physical properties of two varieties paddy grains (Sephidrod and Binam) was investigated. These properties included length, width, thickness, geometrical diameter, mathematical diameter, sphericity, thousand seed weight, bulk density, true volume and true density. The levels of grain moisture content were 10, 14, 18, 22% (w.b.). The results showed that with increasing of grain moisture contain, geometrical diameter, mathematical diameter, area, volume, thousand seed weight, bulk density and true density were increased significantly (p<1%). But true density was decreased. Also Sphericity no verified significantly.
.0pt;fC� fm � s New Roman","serif"; mso-bidi-font-family:"B Yagut"'> w.b.22 درصد بودند. نتایج نشان داد که با افزایش محتوای رطوبت محصول ابعاد اصلی، قطرهندسی، قطرحسابی، سطح و حجم دانهها، وزن هزاردانه، چگالی ظاهری و چگالی واقعی به طور معنیداری افزایش مییابد در حالی که حجم واقعی کاهش مییابد. اثر محتوای رطوبت دانه بر ضریب کرویت معنیدار نبوده است.
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