Rice Bran Pellets Production by Using an Expeller Machine

Abstract

Development and testing an expeller machine for oil extraction as a dual purpose for forming rice bran pellets to maximize the oil extraction rate during solvent extraction was carried out. Four screw revolving speed (0.262, 0.524, 0.786 and 1.05 m/s), three die hole diameter (6, 8 and 10 mm) as well as three levels of moisture content (11.1, 14.2 and 16.1%, w.b.) of two rice bran components (white and dark bran) during extrusion process were used to investigate their effect on the machine performance and the resulting extrudate properties. The results revealed that, the extruder productivity of white bran at the same die hole diameter (10 mm) was increased by 30.