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林业科学 ›› 2011, Vol. 47 ›› Issue (10): 153-159.doi: 10.11707/j.1001-7488.20111024

• 论文 • 上一篇    下一篇

常压醋酸法分离毛竹木质素

周厚德1,2, 刘玉环1,2,3, 阮榕生1,2, 彭红2, 张锦胜1,2,3   

  1. 1. 生物质转化教育部工程研究中心 南昌 330047;2. 南昌大学食品科学与技术国家重点实验室 南昌 330047;3. 江西省生物质转化工程技术研究中心 南昌 330047
  • 收稿日期:2009-11-02 修回日期:2010-01-04 出版日期:2011-10-25 发布日期:2011-10-25
  • 通讯作者: 刘玉环

Extraction of Lignin from Bamboo(Phyllostachys edulis)by Atmospheric Acetic Acid Process

Zhou Houde1,2, Liu Yuhuan1,2,3, Ruan Rongsheng1,2, Peng Hong2, Zhang Jinsheng1,2,3   

  1. 1. Engineering Research Center of Biomass Conversion, Ministry of Education Nanchang 330047;2. State Key Laboratory of Food Science and Technology, Nanchang University Nanchang 330047;3. Engineering and Technology Research Center for Biomass Conversion, Jiangxi Province Nanchang 330047
  • Received:2009-11-02 Revised:2010-01-04 Online:2011-10-25 Published:2011-10-25

摘要:

为了提高常压醋酸法分离毛竹木质素的效率,深入了解过程中醋酸法毛竹木质素化学结构特征,采用单因素逐步优化方法得出最佳的毛竹木质素分离条件为: 醋酸溶液浓度90%,硫酸用量3%,液固比12 ∶1,在106 ℃下保温时间2.5 h; 采用紫外光谱、红外光谱及磁共振波谱等检测结果表明: 毛竹磨木木质素与醋酸木质素主要化学官能团和化学键基本一致,基本化学结构保存完好,但醋酸木质素酚羟基增多,化学活性增强,有利于更进一步的开发利用。

关键词: 毛竹, 木质素, 常压醋酸法, 分离条件, 化学结构

Abstract:

In the goal of increasing the efficiency extraction of lignin from bamboo by atmospheric acetic acid process and of understanding the chemical structure changing during the process, series of single factor experiments had been done in present investigation. This result shows the optimum extraction conditions is: 90% aqueous AcOH, 3%H2SO4, ratio of liquor to bamboo fillings 12 ∶1, pulping temperature 106 ℃, and pulping time 2.5 h. The UV, FTIR, and NMR spectra results shows that the functional groups and chemical bond in MWL and acetic acid lignin are quite similar, excepting acetic acid lignin has more phenolic hydroxyl groups, so its chemical activity is more stonger, which is an advantage for further utilization.

Key words: bamboo, lignin, atmospheric acetic acid, process parameters, chemical structures

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