磨木木素在硫酸盐法蒸煮过程中的反应  

The Degradation and Condensation of Lignin Structure During Kraft Cooking of MWL and Xylose

作　　者：邵震宇[1] 谢益民[1] 周燕 杨志勇 

机构地区：[1]山东轻工业学院制浆造纸科学与技术教育部重点实验室,山东济南250353 [2]潍坊科技职业学院化学工程学院,寿光262700

出　　处：《黑龙江造纸》2008年第4期1-4,共4页Heilongjiang Pulp & Paper

基　　金：国家自然科学基金资助项目(20674046);山东省优秀中青年科学家奖励基金资助项目(04BS05005)

摘　　要：在木糖存在的条件下,采用硫酸盐法蒸煮的方法对蓝花楹磨木木素(milled wood lignin,简称MWL)进行处理,然后对处理后的产物进行红外光谱和13C-NMR分析,研究蓝花楹MWL的结构变化,探讨在硫酸盐法蒸煮过程中木素-碳水化合物复合体(lignin-carbohydrate complexes,简称LCC)的形成情况。研究发现:蓝花楹MWL结构单元之间的α-烷基芳基醚键、β-O-4型连接键很容易发生断裂,而在这些连接键发生断裂的同时,形成的木素中间体与糖产生化学键的结合,蒸煮液中有新的LCC结构形成。In order to investigate the degradation and condensation of milled wood lignin（MWL） from Jacaranda copaia after cooked by kraft method in existence of xylose. The analysis of FT-IR and ^13C-NMR were used to analyze the structure of the products from kraft cooking. The results indicated that the lignin linkages were easy to be cleaved by kraft cooking, especially α-aryl ether linkages and β-O-4 linkages. New LCC structures were found during the breaking of lignin linkages. The newly formed LCC come from the condensation of lignin and xylose.

关 键 词：木素-碳水化合物复合体 磨木木素 木糖 硫酸盐法蒸煮 

分 类 号：TS713[轻工技术与工程—制浆造纸工程]