Quantitative Analysis of Stereo Structure of Lignin Side-chain by Ozonation Method

臭氧化法定量分析木质素侧链立体结构

• 批准号: 13460074
• 负责人: SHINTANI Hiroyuki
• 金额: $ 8.13万
• 依托单位: THE UNIVERSITY OF TOKYO
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (B)
• 财政年份: 2001
• 资助国家: 日本
• 起止时间: 2001 至 2003
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-13460074/
• 关键词: ozone; lignin; stereo structure; wood; pulp; acidolysis; tension wood; methoxyl group

The proportion of erythro form in β-O-4 structures was higher in the tension wood than in the opposite wood of the stem of yellow poplar (Liriodendron tulipifera). The ratio of erythro form and the methoxyl group content in the 7 positions in the stem were correlated (correlation coefficient R =0.98), suggesting that the type of aromatic ring, syringyl or guaiacyl, is one of the factors which stereochemically controls the ratio of erythro and threo forms of β-O-4 structures during lignin formation. Investigation for more than 20 species of woods confirmed the relationships between stereo structure of lignin side-chain and aromatic structure. Structural change of lignin during milling of wood was analyzed. Comparison of results obtained by nitrobenzene oxidation and ozonation analysis suggested that structural changes of lignin had mainly occurred on side-chain part without the participation of aromatic part. Ozonation method was also applied to the analysis of structural change of lignin during acid or alkali treatments and provided numerous results which was never obtained by other methods.

白杨（Liriodendron tualifera）树干受拉材β-O-4结构中的β-O-4型比例高于对生材。木质素中β-O-4结构的顺式和苏式的比例与木质素中7个位置的甲氧基含量相关（相关系数R =0.98），表明木质素中β-O-4结构的顺式和苏式的比例与木质素中芳环的类型（顺式或愈创木基）有关。通过对20余种木材的研究，证实了木质素侧链的立体结构与芳香结构之间的关系。分析了木材粉碎过程中木质素的结构变化。硝基苯氧化和臭氧氧化分析结果表明，木质素的结构变化主要发生在侧链部分，没有芳香部分的参与。臭氧氧化法也被应用于分析木质素在酸或碱处理过程中的结构变化，并提供了许多其他方法从未得到的结果。

项目成果

Iori Tomoda, Yuji Matsumoto, Gyosuke Meshitsuka: "The Role of Alkali-Hydrogen Peroxide during Pulp Treatment."Japan TAPPI Journal. (Accepted). (2004)

Iori Tomoda、Yuji Matsumoto、Gyosuke Meshitsuka：“碱过氧化氢在纸浆处理过程中的作用。”日本 TAPPI 杂志。

Takuya Akiyama, 他3名: "Erythro/Threo Ratio of β-O-4 Structure as Important Structural Characterestics Improvement of ozonation method for the quantitative analysis of lignin side-chain structure"J. Wood Science. (in printing).

Takuy​​a Akiyama 等 3 人：“β-O-4 结构的赤/苏比率作为重要的结构特征用于定量分析木质素侧链结构的臭氧化方法的改进”J. Wood Science（印刷中）。

Takuya Akiyama 他3名: "Ratio of erythro and threo forms of β-O-4 structures in tension wood lignin."Phytochemistry. 64. 1157-1162 (2003)

Takuy​​a Akiyama 和其他 3 人：“张力木质素中 β-O-4 结构的赤式和苏式的比率。”植物化学 64. 1157-1162 (2003)

Yuji Matsumoto 他3名: "Recent Contribution of Ozonation Method to Lignin Chemistry"Proceeding Book of 7th European Workshop on Lignocellulosics and Pulp. 31-34 (2002)

Yuji Matsumoto 等 3 人：“臭氧化方法对木质素化学的最新贡献”第七届欧洲木质纤维素和纸浆研讨会论文集 31-34 (2002)。

Zhenfu Jin, Takuya Akiyama, Byung Yeoup Chung, Yuji Matsumoto, Kenji Iiyama, Satomi Watanabe.: "Changes in lignin content of leaf litters during mulching."Phytochemistry. 64. 1023-1031 (2003)

Jinfu Jin，Takuy​​a Akiyama，Byung Yeoup Chung，Yuji Matsumoto，Kenji Iiyama，Satomi Watanabe。：“覆盖期间落叶木质素含量的变化。”植物化学。