Modeling of pretreatment condition of extrusion-pretreated prairie cordgrass and corn stover with poly (oxyethylen)20 sorbitan monolaurate.

摘要: Extrusion processing has shown potential to be used as a pretreatment method for second-generation bioethanol production. Furthermore, surfactants have been reduce enzyme deactivation and increase the efficiency of hydrolysis. Therefore, sequential technique was developed corn stover (CS) prairie cordgrass (PCG) in which single screw extruder first according previously optimized condition using 70–180 °C feed, barrel, die zones with 65–155 rpm speed. The second this study at 45–55 °C, 1–4 h, 0.15–0.6 g Tween 20/g glucan response surface methodology. Optimization surfactant facilitated estimation interaction higher-order effects major factors involved treatment (temperature, time, loading). Using 8.6 FPU/g cellulase, optimum conditions found by fitting appropriate quadratic models data increased glucose xylose yield 27.5 33 % CS 21.5 27 PCG, respectively. 20 concentrations temperature were most significant affecting sugar (p value <0.05). Studies SDS concentration beyond critical micelle (5.2–100 mM) demonstrated decrease compared control.