竹子木素在GIF仿酶漂白中的降解机理  

Mechanism of Bamboo Lignin Degradation in GIF Biomimetic Bleaching

作　　者：朱正良[1] 周学飞[1] 贾艳迪[1] 查定明 王康 

机构地区：[1]昆明理工大学化学工程学院 [2]景谷县人民政府,云南景谷665000

出　　处：《纤维素科学与技术》2007年第1期10-15,共6页Journal of Cellulose Science and Technology

基　　金：云南省自然科学基金(2005B0014M);云南省教育厅科学研究基金(5Y0681D);华南理工大学制浆造纸工程国家重点实验室科学基金(200629)资助项目

摘　　要：研究了竹子木素在GIF仿酶漂白中的降解机理,结果表明,GIF仿酶处理后,竹子木素酚羟基、醇羟基和对羟苯基增加,甲氧基、羰基、愈创木基和紫丁香基减少,β-O-4、β-1、β-5联接发生断裂,芳环开裂。此外,GIF仿酶处理后,竹子木素分子量下降,多分散性提高。The mechanism of bamboo lignin degradation in GIF biomimetic bleaching was studied, the results showed that the contents of phenolic hydroxyl group, aliphatic hydroxyl group, and p-hydroxyl phenyl were increased; the contents of methoxyl group, carbonyl group, guaiacyl and syringyl were decreased; the linkages of β-O-4, β-1 and β-5 were broken; the benzyl ring was opened; the molecular weight of bamboo lignin was decreased and the polydispersity was increased after GIF biomimetic treatment.

关 键 词：竹子 木素 GIF 仿酶漂白 机理 

分 类 号：TQ351.377[化学工程]