甘蔗叶蒸气爆破法提取木糖的工艺研究

Study on production of xylose from sugar cane leaves with steam explosion

研究蒸气爆破结合酸降解处理甘蔗叶提取木糖过程中爆碎压力、维压时间、料液比、粒度等对木糖溶出量的影响:木糖溶出量随爆碎压力增加而增加,随维压时间增加,先增大后减小,随粒度增大而减小,随固液比增大先减小后增大,得到最佳爆破工艺是爆碎压力1.2MPa,维压时间12.5min,粒度100目,固液比1∶15,辅助电子扫描电镜分析爆破渣表面,初步探讨蒸气爆破机理,表明蒸气爆破处理方式能够促进甘蔗叶酸催化水解提取木糖。

The steam explosion affectes the production of xylose from sugar cane leaves by vitriol. In this paper, four primary factors ： the pressure, the time of keeping pressure, the granularity and the ratio of sugarcane leaves to water were studied. Firstly, when the pressure raised, the content of the zylose increased; when the time of keeping raised, it increased firstly, then reduced; when the granularity got large, it became reduce; when the proportion of the sugar cane leaves to water became increase, it became reduce and then increased. It provided the best production technic： the pressure was 1.2 MPa, the time of keeping pressure was 12.5 min, the granularity was 100 mu, and the proportion of the sugar cane leaves to water was 1：15. It also study the mechanism of steam explosion with scanning electron microscope （SEM）. It indicated that steam explosion was a good dealing way to acid hydrolysate of sugar cane leaves fo xylose.