Fundamental analysis for the degradation mechanisms of carbohydrate and lignin under oxygen bleaching conditions

氧漂白条件下碳水化合物和木质素降解机理的基础分析

• 批准号: 20688007
• 负责人: YOKOYAMA Tomoya
• 金额: $ 16.97万
• 依托单位: The University of Tokyo
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Young Scientists (A)
• 财政年份: 2008
• 资助国家: 日本
• 起止时间: 2008 至 2011
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-20688007/
• 关键词: 漂白; リグニン; 糖; フェノール; 酸素; アルカリ; 活性酸素種; 炭水化物; 多糖類; 立体配置; エピマー; パルプ; モデル化合物; 同位体効果; 木材化学; 速度論的同位体効果; 立体電子効果

A carbohydrate model compound, methyl β-D-glucopyranoside (MGP), isomers of MGP with the stereo configuration of a hydroxyl carbon different from MGP, and deuterated MGP’s with a deuterium substituting the hydrogen of MGP bonding to a hydroxyl carbon were treated together with a phenolic compound as the generator of active oxygen species (AOS) under oxygen bleaching conditions. It was indicated that the stereo configuration influences the reaction of model compounds with AOS and AOS certainly abstract the hydrogens of MGP bonding to hydroxyl carbons.

一种碳含水模型的化合物，甲基β-β-d-丙吡啶糖苷（MGP），MGP的异构体，其与MGP不同的羟基碳的立体构型，并用氘代替MGP的氢与氢的氢一起使用，将MGP与甲基替代的甲基氢替代，并将其与氢的氢一起替换为氢碳的氢，均与氢碳的氢相处。 （AOS）在氧气漂白条件下。据表明，立体声构型影响模型化合物与AOS和AOS的反应无疑会抽象MGP粘合到羟基碳碳的氢。

项目成果

Investigation on the hydrogen abstraction from methyl glucoside by active oxygen species under oxygen delignification conditions.Part 1:Study on the anomeric position

氧脱木素条件下活性氧从甲基葡萄糖苷夺氢的研究第1部分：异头位置研究

• 发表时间: 2009
• 期刊: Holzforschung
• 影响因子: 2.4
• 作者: 大澤裕樹;松島雄紀;遠藤いず貴;丹下健;Fumiko Konishi,Tomoya Yokoyama,and Yuji Matsumoto
• 通讯作者: Fumiko Konishi,Tomoya Yokoyama,and Yuji Matsumoto

Progress of oxidation of non-phenolic lignin moiety in an oxygen bleaching process via the conversion of non-phenolic into phenolic lignin moiety

• DOI: 10.1007/s10086-011-1244-4
• 发表时间: 2012-06-01
• 期刊: JOURNAL OF WOOD SCIENCE
• 影响因子: 2.9
• 作者: Ohmura, Satoshi;Yokoyama, Tomoya;Matsumoto, Yuji
• 通讯作者: Matsumoto, Yuji

東京大学大学院農学生命科学研究科生物材料科学専攻木材化学研究室

东京大学研究生院农学生命科学研究科生物材料学系木材化学实验室

Significance of benzylic hydroxymethylene group in the reaction of lignin side-chain with active oxygen species under oxygen bleaching conditions

• DOI: 10.1007/s10086-013-1339-1
• 发表时间: 2013-08-01
• 期刊: JOURNAL OF WOOD SCIENCE
• 影响因子: 2.9
• 作者: Ohmura, Satoshi;Yokoyama, Tomoya;Matsumoto, Yuji
• 通讯作者: Matsumoto, Yuji

Evaluation of anomeric position of carbohydrate as a reaction site of active oxygen species under oxygen delignification conditions

氧脱木质素条件下碳水化合物异头位置作为活性氧反应位点的评价

• 发表时间: 2008
• 作者: Tomoya Yokoyama et al.