摘要
为研究Co-salen仿酶清洁漂白技术,采用13C-NMR、1H-13C2D-HMQC、31P-NMR核磁共振分析了竹浆Co-salen仿酶处理前后残余木素的结构变化。结果表明:①残余木素苯环开环,甲氧基、酚羟基和脂肪族羟基含量减少,羰基含量增加;木素紫丁香基、愈创木基结构单元减少,而对羟基苯基结构单元增加。②Co-salen仿酶系统催化氧化竹浆残余木素过程中,β-O-4、β-β、β-5、5-CH2-5’连接键断裂。
In order to study the cleaning and bleaching technology of Co-salen biomimetie system, structural changes of bamboo pulp residual lignin during Co-salen biomimetic treatment were studied by 13 C-NMR, [H-13C 2D- HMQC and 31 P-NMR. It indicated that methoxyl, phenolic hydroxyl, aliphatic hydroxyl, syringyl and guaiacyl were reduced, carbonyl and p-hydroxyl phenyl were increased and the aromatic ring was opened. The linkage of β-O-4、β-β、β-5 and 5-CH2-5 was cleaved.
出处
《北京林业大学学报》
CAS
CSCD
北大核心
2009年第4期130-134,共5页
Journal of Beijing Forestry University
基金
国家自然科学基金项目(20766002)
云南省自然科学基金项目(2005B0014M)
云南省教育厅科学研究基金项目(5Y0681D)
华南理工大学制浆造纸工程国家重点实验室科学基金项目(200629)
山东轻工业学院制浆造纸科学与技术教育部重点实验室科学基金项目(0801)
