EXTRUSION PROCESSING OF TRITICALE

Whole triticale kernels were extruded using a Brabender Plasti-corder extruder with 3/4-in. rifled barrel and 1:1 flight depth ratio screw. Samples were extruded at initial moisture contents of 15% and 20% using barrel temperatures of 350 °F, 400 °F and 450 °F through nozzle openings of 1/8 in. and 1/16 in. The products were measured for pH, final moisture content, color, trypsin hydrolysis, torque during extrusion, and texture and flavor as evaluated by a taste panel. From the results it was concluded that an acceptable product could be produced at 20% initial moisture using either the small nozzle and operating at 350 °F or the larger nozzle and operating at 400 °F.