Effect of operating parameters on physical properties of kodo based soy fortified ready to eat extruded snacks

Response surface methodology (with central composite rotatable design) was used to investigate the physical properties of extruded kodo-defatted soy flour-water chestnut blends in a Brabender single screw extruder. The effect of extrusion operating parameters mainly moisture content in blend, barrel temperature, die head temperature, screw speed and blend ratio on quality of extruded products were determined.