生物质化学工程 ›› 2017, Vol. 51 ›› Issue (4): 1-7.doi: 10.3969/j.issn.1673-5854.2017.04.001
• 研究报告 • 下一篇
彭锋, 付亘悫, 汪小君, 胡亚洁, 岳盼盼
收稿日期:
2016-01-08
出版日期:
2017-07-30
发布日期:
2017-08-03
作者简介:
彭锋(1979-),男,四川仁寿人,教授,博士,主要从事植物资源开发利用的研究;E-mail:fengpeng@bjfu.edu.cn。
基金资助:
PENG Feng, FU Genque, WANG Xiaojun, HU Yajie, YUE Panpan
Received:
2016-01-08
Online:
2017-07-30
Published:
2017-08-03
摘要: 以蔗渣为原料,经脱蜡后依次用H2O、1% NaOH和3% NaOH进行抽提,分别得到水溶性木质素L1和碱溶性木质素L2、L3,并对其理化性质和结构特征进行分析。通过硝基苯氧化法、高效液相色谱检测来确定蔗渣木质素的组分,通过凝胶渗透色谱检测蔗渣木质素的分子质量,利用紫外分光光度计和二维核磁共振推导出蔗渣木质素的结构单元和连接方式。结果表明,L1、L2和L3的得率(以绝干原料计)分别为0.4%、5.7%和3.7%,占蔗渣木质素总量的54.1%,而且水溶性木质素分子质量大于碱溶性木质素。L2和L3主要来自于蔗渣次生壁,富含紫丁香基单元和大量的非缩合醚结构。蔗渣木质素的结构单元间的主要连接方式是β-O-4'醚键,还有β-β'、β-5'和β-1'等碳碳结构。蔗渣木质素是由紫丁香基、愈创木基和少量对羟苯基结构单元组成的GSH型木质素,此外,还含有对香豆酸和阿魏酸,通过酯键与木质素相连。
中图分类号:
彭锋, 付亘悫, 汪小君, 胡亚洁, 岳盼盼. 水溶性和碱溶性蔗渣木质素的分离与表征[J]. 生物质化学工程, 2017, 51(4): 1-7.
PENG Feng, FU Genque, WANG Xiaojun, HU Yajie, YUE Panpan. Isolation and Characterization of Water-soluble and Alkali-soluble Lignin from Bagasse[J]. bce, 2017, 51(4): 1-7.
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