超声波空化效应对纤维素酶降解秸秆影响的研究

Research on Wheat Straw Degradation by Cellulase under the Effect of Ultrasonic Cavitation

秸秆的天然结构是阻碍其被生物酶降解，实现生物质资源有效利用的主要障碍。通过超声波空化效应对秸秆进行预处理，可以破坏其结构，有效改善纤维素酶对其降解效果。本文研究了秸秆粒径、使用量、超声功率、超声处理时间对纤维素酶降解秸秆的影响。结果表明：0.2 g 160-200目秸秆在100 W功率下超声处理15 min，酶降解效果达到最佳，比未处理组提高47.2%，并通过扫描电子显微镜对处理后秸秆形态进行了观察。

The natural structure of wheat straw is the main block that prevent it from being degraded by enzyme to realizing effective utilization of biomass resources. However, the performance of enzyme degradation on wheat straw can be significantly improved by ultrasonic cavitation pretreatment. The influence of wheat straw particle size, usage, ultrasonic power, treatment time on enzyme degradation was investigated in this paper. It was shown that at usage of 0.2 g, particle size of 160-200 mesh, ultrasonic power of 100 W and treatment time of 15 min the degradation result achieved optimal situation, which was 47.2%higher than that with no pretreatment process,SEM picture was observed in the paper.