中文摘要：

以杂交狼尾草为原料，采用CaO／MgO复合固体碱为催化剂，通过水相环境下高温处理，研究反应条件对狼尾草酶解效率及总糖收率的影响。研究结果表明：在催化剂含量20％，温度110℃，时间80min，固液比1：20的条件下预处理狼尾草，木质素去除率高达54．18％。加酶量为40FPU／g，酶解72h，葡聚糖收率从未处理时的41．23％增大到81．04％；CaO／MgO固体碱预处理可破坏杂交狼尾草原本的致密结构，暴露更多的纤维素，破坏纤维素中的分子内和分子间的化学基团。CaO／MgO固体碱循环使用4次后无明显失活。

英文摘要：

The effects of the reaction conditions on enzymatic digestibility and total sugar yield of Pennisetum hybrid pretreated in high temperature aqueous environment with composite solid alkali-CaO/MgO as the catalyst are investigated in this paper. The results indicated that 20% catalyst content, 110 ℃, 80 min and 1 ： 20 ratio of solid are the optimal pretreatment conditions, whose lignin removal rate is up to 54.18%. When the enzyme loading is 40 FPU/g, 72 h enzymatic digestibility increases from 41.23% to 81.04%, substrates can be fully hydrolyzed. After pretreatment, the compact structure is damaged, more fibers expose, the chemical groups are destroyed like hydrogen bond in molecular. The catalysts CaO/MgO can be recovered and regenerated.