Physical Properties of Different Cultivar Local Glutinous rice (susu and siding) and Commercial Thai Cultivar

Abstract

Glutinous rice (Oryza Sativa var. glutinosa) is known as waxy rice or sticky rice and it has an opaque and small size grain cultivar distinct from common white rice. In outlining the equipment for processing, storage, sorting, sizing and other post-harvest equipment the particular of their physical properties is important. Two different cultivar of local glutinous rice susu and siding were evaluated in this study. For susu cultivar, the average of length, width, and thickness were 6.63mm, 1.88mm, and 1.50mm respectively. The corresponding values were 6.24mm, 1.98mm, and 1.48mm for siding cultivar. For susu cultivar, the average of aspect ratio, sphericity, volume, surface area, bulk density, true density, porosity, 1000 weight kernel, and angle of repose were 0.28, 0.40%, 9.81mm3, 19.02mm2, 800.54 kg/m3, 1500.36 kg/m3, 46.65%, 18.88g, and 39.45°. Thecorresponding values were 0.32, 0.42%, 10.25mm3, 19.45mm2, 772.73 kg/m3, 1229.51 kg/m3, 37.15%, 17.04g and 40.08° for siding cultivar. Thus, the objective of this study is to compare the physical properties of two different local cultivars aid in designing the rice processing equipment.