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林产化学与工业

林产化学与工业 ›› 2012, Vol. 32 ›› Issue (5): 24-28.

• 1研究报告 • 上一篇    下一篇

半乳糖醛酸-木质素复合体结构的研究

孙雪1, 谢益民1, 杨海涛1, 姚兰1, 石超群1, 杨五峰2   

  1. 1. 湖北工业大学 化学与环境工程学院, 湖北 武汉 430068;2. 轻工业杭州机电设计研究院, 浙江 杭州 310004
  • 收稿日期:2011-10-13 修回日期:1900-01-01 出版日期:2012-10-30 发布日期:2012-10-30
  • 通讯作者: 谢益民,教授,研究领域为木质素化学与制浆造纸技术;E-mail:ppymxie@scut.edu.cn。

Study on the Structure of Galacturonic Acid-dehydrogenation Polymer Complexs

SUN Xue1, XIE Yi-min1, YANG Hai-tao1, YAO Lan1, SHI Chao-qun1, YANG Wu-feng2   

  1. 1. School of Chemical & Environmental Engineering,Hubei University of Technology,Wuhan 430068, China;2. Hangzhou Design & Research,Institute of Electro-mechanic in Light Industry, Hangzhou 310004, China
  • Received:2011-10-13 Revised:1900-01-01 Online:2012-10-30 Published:2012-10-30

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摘要： 以果胶前驱物α-D-半乳糖醛酸和木质素前驱物松柏醇-β-D-葡萄糖苷为起始物,在复合酶(β-葡萄糖苷酶、葡萄糖氧化酶、漆酶和辣根过氧化物酶)的协同作用下,合成出半乳糖醛酸-DHP复合体(GDHPC)。通过FT-IR及 13C NMR 测试,发现产物中DHP的主要结构单元为β-O-4、 β-β、 β-5和β-1结构。另外,还含有较多的松柏醇/醛和少量的香草醛结构,以及Ar-CαH2-和醚化5-5'结构。产物GDHPC中,木质素结构单元主要通过α碳与α-D-半乳糖醛酸以酯键、缩醛键和苯甲醚键的方式结合。

关键词: α-D-半乳糖醛酸, 木质素脱氢聚合物, 果胶-木质素复合体, 酯键连接

Abstract: Galacturonic acid-dehydrogenation polymer (DHP) complexes (GDHPC) were prepared from a pectin precursor of α-D-galacturonic acid and a lignin precursor of coniferin catalyzed by β-glucosidase, glucose oxidase, laccase and horseradish peroxidase. The FT-IR and 13C NMR spectra show that β-O-4, β-β, β-5 and β-1 structures are main substructures of DHP in the GDHPC. In addition, coniferyl alcohol/aldehyde substructures, vanillin units, and Ar-CαH2-substructures and etherified 5-5' units are also formed in the complexs. In the GDHPC, Cα of lignin substructure is also associated with α-D-galacturonic acid by ester bonds, acetal bonds and benzyl ether bonds.

Key words: α-D-galacturonic acid, DHP, pectin-lignin complexes, ester linkage

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