Physical properties of extruded corn grits with corn fibre by CO2 injection extrusion

► The physical properties of extruded corn grits/fibre by CO2 injection were studied. ► Melt temperature could significantly affected physical properties in CO2 injection. ► CO2 injection led to better physical properties at lower melt temperature. ► CO2 inject did not result in significant changes at high melt temperature. ► Corn fibre decreased expansion index, bulk density and breaking strength.