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林产化学与工业

林产化学与工业 ›› 2008, Vol. 28 ›› Issue (5): 93-99.

• 研究报告 • 上一篇    下一篇

竹浆GIF仿酶漂白木质素降解产物气相色谱-质谱解析

贾艳迪1, 周学飞1,2, 朱正良1   

  1. 1. 昆明理工大学 云南省高校制浆造纸工程研究中心, 云南, 昆明, 650224;2. 华南理工大学 制浆造纸工程国家重点实验室, 广东, 广州, 510641
  • 收稿日期:2007-11-29 修回日期:1900-01-01 出版日期:2008-10-30 发布日期:2008-10-30
  • 通讯作者: 周学飞,江苏海门人,教授,博士,研究方向:清洁制浆化学;E-mail:lgdx602@tom.com。

Interpretation on Degraded Products of Lignin during GIF Biomimetic Bleaching of Bamboo Pulp by GC-MS

JIA Yan-di1, ZHOU Xue-fei1,2, ZHU Zheng-liang1   

  1. 1. Research Center of Pulp and Paper Engineering of Provincial Colleges and Universities, Kunming University of Science and Technology, Kunming 650224, China;2. State Key Laboratory of Pulp and Paper Engineering, South China University of Technology, Guangzhou 510641, China
  • Received:2007-11-29 Revised:1900-01-01 Online:2008-10-30 Published:2008-10-30

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摘要： 利用气相色谱-质谱联用(GC-MS)方法对GIF仿酶漂白中的木质素降解产物进行了分析,进一步探讨这种仿酶系统对木质素的降解机制.结果显示GIF仿酶处理使竹浆残余木质素进一步氧化降解,降解的主要方式有脱甲基作用、醌型结构的产生和开环、烷基-芳基醚键的开裂、侧链碳-碳连接的氧化断裂等.GC-MS检测所得的降解产物中,含羰基的化合物较多,这是GIF仿酶系统催化氧化的结果.一些醌式结构、共轭羰基和酚类的脱除,也使纸浆因发色基团减少而白度提高.此外,检测出一些糖类降解产物,说明GIF仿酶系统对纸浆碳水化合物有一定的降解作用.

关键词: 竹浆, GIF, 仿酶漂白, 木质素降解产物, 气相色谱-质谱

Abstract: The degraded products of lignin were identified by gas chromatography-mass spectrometry (GC-MS) during GIF biomimetic bleaching of bamboo pulp to explore lignin degradation mechanism. The results showed that residual lignin was further degraded by GIF biomimetic system. The main ways of lignin degradation were involved with demethylation, formation and opening of quinone-type structures, cleavages of alkyl-aryl ether bond and carbon-carbon linkage in side-chain. The degraded products contained much carbonyl compounds, which was the result of catalytic oxidation in GIF biomimetic system. The pulp brightness was improved because of the removals of some quinone-type structures, conjugated carbonyl and phenolic compounds. Some carbohydrate-degraded products were also detected out by GC-MS.

Key words: bamboo pulp, GIF, biomimetic bleaching, lignin-degraded products, GC-MS

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