作　　者： ; ; ; ; (甘定能）;

机构地区： 山东轻工业学院

出　　处： 《中国造纸学报》 2006年第2期10-14,共5页

摘　　要： 提取蓝花楹磨木木素(MWL),并在木聚糖存在的条件下,模拟硫酸盐法蒸煮MWL。对MWL和蒸煮产物的酸不溶物进行FT-IR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产物中木素-碳水化合物复合体(LCC)的形成情况。研究发现:蒸煮产物中的酸不溶物含有碳水化合物,其中有大量木聚糖。蓝花楹MWL结构单元之间的α-芳基醚键、β-芳基醚键非常容易断裂,有新的LCC结构形成木素和碳水化合物间的连接在蒸煮过程中发生不完全降解。 Milled wood lignin （MWL） from Jacaranda copaia was prepared. In order to study the change of the structure, MWL was cooked by kraft method in existence of xylan. The combination of infrared spectra analysis and ^13C-NMR was used to identify the LCC formed during kraft cooking. The research indicated that the lignin linkages were easy to be cleaved by kraft cooking, especially α-aryl ether linkage and β-aryl ether linkage. There were new LCC structures formed during the cleaving of lignin linkages. Some new LCC which was connected with benzyl ether linkage was formed from β-0-4 lignin and 5-5 lignin structures and xylan. The newly formed LCC was stable in alkali solution.

关 键 词： 蓝花楹 木聚糖 硫酸盐法蒸煮 苯甲醚键

领　　域： [轻工技术与工程]