华南理工大学学报(自然科学版) ›› 2007, Vol. 35 ›› Issue (11): 100-104.

• 化学化工 • 上一篇    下一篇

漆酶/介体体系改性对磨石磨木浆木素结构的影响

张爱萍1 秦梦华2 徐清华2 孙润仓1 刘传富1   

  1. 1.华南理工大学 制浆造纸工程国家重点实验室,广东 广州 510640;2. 山东轻工业学院 制浆造纸工程省级重点学科,山东 济南 250353
  • 收稿日期:2006-12-04 出版日期:2007-11-25 发布日期:2007-11-25
  • 通信作者: 张爱萍(1980-) ,女,博士生,主要从事植物资源化学的研究. E-mail:aiping_zhang2003@163. com
  • 作者简介:张爱萍(1980-) ,女,博士生,主要从事植物资源化学的研究.

Effect of Moditication by Laccase/Mediator System on Structure of Lignin from Stone Ground Wood Pulp

Zhang Ai-ping1  Qin Meng-hua2  Xu Qing-hua2  Sun Run-cang1  Liu Chuan-fu1   

  1. 1. State Key Laboratory of Pulp and Paper Engineering , South China Univ. of Tech. , Guangzhou 510640 , Guangdong , China;2. Shandong Key Laboratory of Pulp and Paper Engineering, Shandong Institute of Light Industy,Jinan 250353 , Shandong, Chína
  • Received:2006-12-04 Online:2007-11-25 Published:2007-11-25
  • Contact: 张爱萍(1980-) ,女,博士生,主要从事植物资源化学的研究. E-mail:aiping_zhang2003@163. com
  • About author:张爱萍(1980-) ,女,博士生,主要从事植物资源化学的研究.

摘要: 以磨石磨木浆为原料,对对照浆、漆酶/介体体系改性浆的木素进行分离,制得磨木木素.采用元素分析、功能基测定、阿-IR 、GPC 和1HNMR 等分析技术探讨了漆酶/介体体系改性对纸浆中木素结构的影响.结果表明,与对照浆相比,改性浆木素发生了氧化降解反应;其中木素的甲氧基、盼是基含量降低,而摸基含量升高;对照浆和漆酶/介体体系改性磨石磨木浆木素的C9 结构单元式分别为C9 H8.37 O2.87 (OCH3 )0.98 和C9 H7. 83 O3. 01 (OCH3 )0.90'

关键词: 磨石磨木浆, 漆酶/介体体系, 改性, 木素, 1HNMR

Abstract:

Milled wood lignin (MWL) was extracted from the control pulp and the laccase/ mediator system ( LMS) -modified pulp of stone ground wood , and its structure was characterized by means of elemental analysis , functional group determination , FT-IR , GPC and 1HNMR spectra. The results show that , as compared with the lignin obtained from the control pulp, the modified one is degraded and oxidated, concomitantly with the decrease of methoxyl group and phenolic hydroxyl group contents and the increase of carbonyl group content , and that the approximate molecular formulae of the lignin from the control and LMS-modified pulp are respectively C9 H8.37 O2.87 (OCH3 )0.98 and C9 H7. 83 O3. 01 (OCH3 )0.90'

Key words: stone ground wood pulp, laccase/ mediator system, modification, lignin, 1HNMR