| With high-temperature defatted peanut meal as raw material，the effects of barrel temperature, material moisture, feed speed and screw speed on texture properties of texturized peanut protein were studied using TXLL110 twin-screw extruder and texture profile analysis method(TPA). The results showed that with barrel temperature increasing, the hardness, elasticity and shear force increased first and then decreased;with material moisture rising, both the hardness and shear force reduced, while elasticity improved first and then falled;with feed speed increasing, the hardness, elasticity and shear force increased first and then decreased, the drop of elasticity and shear force was smaller;with screw speed increasing, the hardness declined a little, elasticity growed slightly, and shear force increased first and then decreased a bit. The optimal operation parameters were obtained as follows: barrel temperature 150℃, material moisture 30%, feed speed 550 kg/h and screw speed 350 r/min. |
