构树皮蒸汽爆破预处理的研究  

Studies on Steam Explosion of Broussonetia papyrifera Bark

作　　者：赵剑[1,2,3,4] 卫民 刘军利[1,2,3,4] 蒋剑春 

机构地区：中国林业科学研究院林产化学工业研究所[2]生物质化学利用国家工程实验室[3]国家林业局林产化学工程重点开放性实验室[4]江苏省生物质能源与材料重点实验室,江苏南京210042

出　　处：《生物质化学工程》2013年第4期12-16,共5页Biomass Chemical Engineering

基　　金：林业公益性行业专项(200904055)

摘　　要：研究了蒸汽压力和保压时间对构树皮蒸汽爆破预处理后酸水解还原糖得率的影响。确定当蒸汽压力为2.2 MPa,保压时间为9 min时,还原糖总得率最高,为原料理论含糖量的76.48%,而未经蒸汽爆破预处理直接酸水解的还原糖得率仅为理论得率的47.25%。原料经蒸汽爆破预处理后再酸水解的还原糖总得率比直接酸水解的还原糖得率提高了61.86%。通过扫描电镜对比观察了蒸汽爆破预处理对纤维结构的作用效果。The effects of steam explosion pressure and pressure holding time on the yield of reducing sugar degraded by acid hydrolysis after steam explosion pretreatment of Broussonetia papyrifera bark were investigated.The greatest reducing sugar yield 76.48 %.It was obtained under a steam explosion pressure of 2.2 MPa,and a pressure holding time of 9 min.In the process of acid hydrolysis of the raw material without steam explosion pretreatment,reducing sugar yield was only 47.25 % of the theoretical amount.Comparing with the non-pretreatment material,the reducing sugar yield of pretreatment material was increased by 61.86 %.The structural variations of the fibres of B.papyrifera bark before and after steam explosion pretreatment were observed by scanning electron microscope.

关 键 词：构树皮 蒸汽爆破 预处理 酸水解 还原糖得率 

分 类 号：TQ352.78[化学工程]