蒸汽爆破预处理对植物纤维素性质的影响

Pretreatment of Corncob by Steam Explosion Process

用研制的植物纤维素连续蒸汽爆破机对植物纤维素原料的预处理进行了研究，利用扫描电镜（ＳＥＭ）、红外光谱（ＩＲ）和Ｘ-射线衍射仪对汽爆处理后物料的形态结构、物理特性及化学组成的变化进行了分析。研究结果表明，汽爆预处理方法对纤维素物料的物理结构及化学组成有一系列的影响，汽爆使物料的粒度变小，Ｘ-射线衍射峰变明显，处理物料红外光谱的某些峰强度减弱，半纤维素变化较大，处理后的物料易于酶解。

Pretreatment of corncob by stream explosion process(SEP) has been studied. Theresults indicate that pretfeatment has strong effects on the physical feature, morphology, crystallinityand composition of corncob by Scanning Electron Microscopic (SEM), Infrared (IR) and X-raysdiffracting spectrum methods. After pretreatment, lignocellulose is easer to be hydrolyzed by enzymethan original lignocellulose.