Yokoyama Tomoya 横山朝哉

… Alternative Names

Researcher Number	10359573
Other IDs
Affiliation (Current)	2021: 東京大学, 大学院農学生命科学研究科(農学部), 教授
Affiliation (based on the past Project Information) *help	2021: 東京大学, 農学生命科学研究科, 准教授 2016: 東京大学, 大学院農学生命科学研究科(農学部), 准教授 2011 – 2015: 東京大学, 農学生命科学研究科, 准教授 2011 – 2012: 東京大学, 大学院・農学生命科学研究科, 准教授 2011: 東京大学, 大学院・農学生命研究科, 講師 … More
Review Section/Research Field	Principal Investigator 林産科学・木質工学 / Wood science / Wood science / Basic Section 40020:Wood science-related Except Principal Investigator 林産科学・木質工学 / Wood science / Environmental technology/Environmental materials
Keywords	Principal Investigator 酸素 / パルプ / 活性酸素種 / 炭水化物 / フェノール / 漂白 / リグニン / 多糖類 / 木材化学 / 脱リグニン … More Except Principal Investigator リグニン / 細胞壁 / 塩化リチウム / アテ材 / 木化 / 木本 / 草本 / ボールミル / 進化 / NMR / 木粉溶液 / 遊星式ボールミル / ジメチルスルフォキシド / reaction wood / DMSO / 赤外分光スペクトル / バイオマス / 近接場 / 立体異性体 / 顕微赤外分光 / 溶解 / 木質 / ヘミセルロース / キシラン / シリンギル / 樹木 / グアイアシル / マンナン / エチレンジアミン / パルプ / 土壌改良剤 / アルミニウムイオン / 森林 / 酸性土壌 / アルカリ性酸素酸化 / 錯体形成 / 根 / lignin / soil conditioning agent / aluminum ion / forest / acid soil / alkaline-oxygen oxidation / complex formation / root Less

木質バイオマスの有効利用を実現させる副次生成リグニン由来ファインケミカルの創成Principal InvestigatorOngoing
- Principal Investigator
  
  横山朝哉
- Project Period (FY)
  2021 – 2024
- Research Category
  
  Grant-in-Aid for Scientific Research (B)
- Review Section
  
  Basic Section 40020:Wood science-related
- Research Institution
  The University of Tokyo
Construction of a novel bleaching method consisting of manganese-added alkaline oxygen treatment successively followed by acidic manganese treatmentPrincipal Investigator
- Principal Investigator
  
  Yokoyama Tomoya
- Project Period (FY)
  2013 – 2016
- Research Category
  
  Grant-in-Aid for Scientific Research (C)
- Research Field
  
  Wood science
- Research Institution
  The University of Tokyo
Analysis of chemical nature and interaction of cell wall components by the use of wood cell wall solvent system
- Principal Investigator
  
  MATSUMOTO Yuji
- Project Period (FY)
  2010 – 2012
- Research Category
  
  Grant-in-Aid for Scientific Research (B)
- Research Field
  
  Wood science
- Research Institution
  The University of Tokyo
Fundamental analysis for the degradation mechanisms of carbohydrate and lignin under oxygen bleaching conditionsPrincipal Investigator
- Principal Investigator
  
  YOKOYAMA Tomoya
- Project Period (FY)
  2008 – 2011
- Research Category
  
  Grant-in-Aid for Young Scientists (A)
- Research Field
  
  Wood science
- Research Institution
  The University of Tokyo
How does the structure of lignin correspond to mechanical circumstances
- Principal Investigator
  
  MATSUMOTO Yuji
- Project Period (FY)
  2005 – 2008
- Research Category
  
  Grant-in-Aid for Scientific Research (A)
- Research Field
  
  林産科学・木質工学
- Research Institution
  The University of Tokyo
製紙用パルプの酸素脱リグニン過程における炭水化物の分解抑制技術の開発Principal Investigator
- Principal Investigator
  
  横山朝哉
- Project Period (FY)
  2005 – 2007
- Research Category
  
  Grant-in-Aid for Young Scientists (B)
- Research Field
  
  林産科学・木質工学
- Research Institution
  The University of Tokyo
Utilization of Alkaline-oxygen Delignification Stage Waste Liquor for the Removal of Aluminum Toxicity to Plant Growth
- Principal Investigator
  
  MESHITSUKA Gyosuke
- Project Period (FY)
  2003 – 2005
- Research Category
  
  Grant-in-Aid for Scientific Research (A)
- Research Field
  
  Environmental technology/Environmental materials
- Research Institution
  THE UNIVERSITY OF TOKYO

All 2017 2016 2015 2013 2012 2011 2010 2009 2008 2007 2005 Other

All Journal Article Presentation Patent

[Journal Article] Stereo-preference in the degradation of the erythro and threo isomers of β-O-4-type lignin model compounds in oxidation processes. Part 2: In the reaction with hydroxyl and oxyl anion radicals under hydrogen peroxide bleaching conditions2017
- Author(s)
  Pattaraporn Posoknistakul, Takuya Akiyama, Tomoya Yokoyama, and Yuji Matsumoto
- Journal Title
  
  Journal of Wood Chemistry and Technology
  
  Volume: 37 Pages: 87-98
- DOI
  10.1080/02773813.2016.1235588
- Peer Reviewed / Acknowledgement Compliant
- Data Source
  KAKENHI-PROJECT-25450237
[Journal Article] Stereo-preference in the degradation of the erythro and threo isomers of β-O-4-type lignin model compounds in oxidation processes. Part 1: In the reaction with active oxygen species under oxygen delignification conditions2016
- Author(s)
  Pattaraporn Posoknistakul, Takuya Akiyama, Tomoya Yokoyama, and Yuji Matsumoto
- Journal Title
  
  Journal of Wood Chemistry and Technology
  
  Volume: 36 Pages: 288-303
- DOI
  10.1080/02773813.2016.1138133
- Peer Reviewed / Acknowledgement Compliant
- Data Source
  KAKENHI-PROJECT-25450237
[Journal Article] Effect of stereo-configurational difference of carbohydrate model compound on the reaction with active oxygen species under oxygen delignification conditions2015
- Author(s)
  Akihiko Nakagawa, Tomoya Yokoyama, and Yuji Matsumoto
- Journal Title
  
  Journal of Wood Science
  
  Volume: 5 Pages: 510-516
- DOI
  10.1007/s10086-015-1499-2
- Peer Reviewed / Acknowledgement Compliant
- Data Source
  KAKENHI-PROJECT-25450237
[Journal Article] Investigation on the hydrogen abstraction from methyl glucoside by active oxygen species under oxygen delignification conditions. Part 5: Comprehensive results on experiments using deuterium labeled methyl glucosides2015
- Author(s)
  Tomoya Yokoyama, Akihiko Nakagawa, and Yuji Matsumoto
- Journal Title
  
  Journal of Wood Chemistry and Technology
  
  Volume: 35 Pages: 450-463
- DOI
  10.1080/02773813.2015.1039134
- Peer Reviewed / Acknowledgement Compliant
- Data Source
  KAKENHI-PROJECT-25450237
[Journal Article] IR-SNOM analysis of occluding substances in lumina of xylem elements in sapwood of Quercus serrata attacked by Platypus quercivorus2013
- Author(s)
  Takayuki Yamagishi, Tomoya Yokoyama, Tohihiro Yamada, Yuji Matsumoto
- Journal Title
  
  Analytical Sciences
  
  Volume: 29(4) Pages: 411-415
- NAID
  10031165331
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-22380093
[Journal Article] Analysis of lignin aromatic structure in wood based on the IR spectrum2012
- Author(s)
  Yu Huang, Linshan Wang, Yuesheng Chao, Deded Sarip Nawawi, Takuya Akiyama, Tomoya Yokoyama, and Yuji Matsumoto
- Journal Title
  
  J. Wood Chem. Technol
  
  Volume: 32(4) Pages: 294-303
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-22380093
[Journal Article] Effect of solvent on the β-O-4 bond cleavage of a lignin model compound by tert-butoxide under mild conditions2012
- Author(s)
  Kineo Takeno, Tomoya Yokoyama, and Yuji Matsumoto
- Journal Title
  
  BioResources
  
  Volume: 7(1) Pages: 15-25
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-22380093
[Journal Article] Progress of oxidation of non-phenolic lignin moiety in an oxygen bleaching process via the conversion of non-phenolic into phenolic lignin moiety2012
- Author(s)
  Satoshi Ohmura,Tomoya Yokoyama,and Yuji Matsumoto
- Journal Title
  
  J.Wood Sci.
  
  Volume: 58 (3) Pages: 243-250
- NAID
  10031137091
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-20688007
[Journal Article] Revisiting the mechanism of β-O-4 bond cleavage during acidolysis of lignin. Part 5: On the characteristics of acidolysis using hydrobromic acid2012
- Author(s)
  Takaaki Imai, Tomoya Yokoyama, and Yuji Matsumoto
- Journal Title
  
  J. Wood Chem. Technol
  
  Volume: 32(2) Pages: 165-174
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-22380093
[Journal Article] Investigation on the hydrogen abstraction from methyl glucoside by active oxygen species under oxygen delignification conditions.Part 2:Study on the C-2 position2012
- Author(s)
  Akihiko Nakagawa,Tomoya Yokoyama and Yuji Matsumoto
- Journal Title
  
  J. Wood Chem.Technol.
  
  Volume: 32 (1) Pages: 10-22
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-20688007
[Journal Article] Structure of cell wall components in the sapwood of Quercus serrata Thunb. attacked by Platypus quercivorous2012
- Author(s)
  Takayuki Yamagishi, Tomoya Yokoyama, Tohihiro Yamada, Yuji Matsumoto
- Journal Title
  
  Phytochemistry, J. Wood Chem. Technol
  
  Volume: 32(4) Pages: 294-303
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-22380093
[Journal Article] Investigation on the hydrogen abstraction from methyl glucoside by active oxygen species under oxygen delignification conditions IV: Appearance of kinetic isotope effect in the reaction between methyl glucoside and deuterated methyl glucoside2012
- Author(s)
  Akihiko Nakagawa,Tomoya Yokoyama,and Yuji Matsumoto
- Journal Title
  
  J.Wood Sci.
  
  Volume: 58 (6) Pages: 563-569
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-20688007
[Journal Article] Investigation on the hydrogen abstraction from methyl glucoside by active oxygen species under oxygen delignification conditions III: Effect of the origin of active oxygen species2011
- Author(s)
  Tomoya Yokoyama
- Journal Title
  
  Journal of Wood Science
  
  Volume: 57 Pages: 512-219
- DOI
  10.1007/s10086-011-1201-2
- NAID
  10030451286
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-20688007
[Journal Article] Revisiting the Mechanism of β-O-4 Bond Cleavage during Acidolysis of Lignin. Part 3: Search for the rate-determining step of a non-phenolic C6-C3 type modelcompound2011
- Author(s)
  Hiroaki Ito, Takaaki Imai, Knut Lundquist, Tomoya Yokoyama, Yuji Matsumoto
- Journal Title
  
  J. Wood Chem. Technol
  
  Volume: 31(2) Pages: 172-182
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-22380093
[Journal Article] Revisiting the mechanism of β-O-4 bond cleavage during acidolysis of lignin. Part 4: Dependence of acidolysis reaction on the type of acid2011
- Author(s)
  Takaaki Imai, Tomoya Yokoyama, Yuji Matsumoto
- Journal Title
  
  J. Wood Sci
  
  Volume: 57(3) Pages: 219-225
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-22380093
[Journal Article] Investigation on the hydrogen abstraction from methyl glucoside by active oxygen species under oxygen delignification conditions III:Effect of the origin of active oxygen species2011
- Author(s)
  Tomoya Yokoyama,Akihiko Nakagawa,Fumiko Konishi, and Yuji Matsumoto
- Journal Title
  
  J.Wood Sci.
  
  Volume: 57 (6) Pages: 512-519
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-20688007
[Journal Article] Investigation on the hydrogen abstraction from methyl glucosidc by active oxygen species under oxygen deligniflcation conditions III : Effect of the origin of active oxygen species2011
- Author(s)
  Tomoya Yokoyama
- Journal Title
  
  Journal of Wood Science
  
  Volume: 57 Pages: 512-519
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-20688007
[Journal Article] Revisiting the Mechanism of β-O-4 Bond Cleavage during Acidolysis of Lignin. Part 2 : Detailed Reaction Mechanism of a Non-Phenolic C6-C2 Type Model Compound2010
- Author(s)
  Tomoya Yokoyama, その他
- Journal Title
  
  Journal of Wood Chemistry and Technology
  
  Volume: 30(3) Pages: 269-282
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-22380093
[Journal Article] Revisiting the Mechanism of β-O-4Bond Cleavage during Acidolysis of Lignin. Part 2: Detailed Reaction Mechanism of a Non-Phenolic C6-C2 TypeModel Compound2010
- Author(s)
  Tomoya Yokoyama and Yuji Matsumoto
- Journal Title
  
  J. Wood Chem. Technol
  
  Volume: 30(3) Pages: 269-282
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-22380093
[Journal Article] Dissolution of Ethylenediamine Pretreated Pulp with High Lignin Content in LiCl/DMSO without Milling2010
- Author(s)
  Zhiguo Wang, Tomoya Yokoyama, Yuji Matsumoto
- Journal Title
  
  J. Wood Chem. Technol
  
  Volume: 30(3) Pages: 219-229
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-22380093
[Journal Article] AFM observation of ultrathin microfibrils in fruit tissues2010
- Author(s)
  Hiroshi Niimura, Tomoya Yokoyama, Satoshi Kimura, Yuji Matsumoto, Shigenori Kuga
- Journal Title
  
  Cellulose
  
  Volume: 17(1) Pages: 13-18
- Data Source
  KAKENHI-PROJECT-22380093
[Journal Article] Investigation on the hydrogen abstraction from methyl glucoside by active oxygen species under oxygen delignification conditions.Part 1:Study on the anomeric position2009
- Author(s)
  Fumiko Konishi,Tomoya Yokoyama,and Yuji Matsumoto
- Journal Title
  
  Holzforschung
  
  Volume: 63 (1) Pages: 52-60
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-20688007
[Journal Article] Reexamination of the mechanism of β-O-4 bond cleavage during acidolysis of lignin part 12008
- Author(s)
  Tomoya Yokoyama, Yuji Matsumoto
- Journal Title
  
  Kinetic of the exclusive formation of enol ether from non-phenolic C6-C2 type model compounds. Holzforschung 62(2)
  
  Pages: 164-164
- Data Source
  KAKENHI-PROJECT-17208015
[Journal Article] Reexamination of the mechanism of β-0-4bond cleavage during acidolysis of lignin part1:Kinetic of the exclusive formation of enol ether from non-phenolic C6-C2 type modeIcomounds2008
- Author(s)
  Tomoya Yokoyama, Yuji Matsumoto
- Journal Title
  
  Holzforschung 62(2)
  
  Pages: 164-168
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-17208015
[Journal Article] Detailed examination of the degradation of phenol derivatives under oxygen delignification conditions2007
- Author(s)
  Tomoya Yokoyama, Yuji Matsumoto, Gyosuke Meshitsuka
- Journal Title
  
  Journal of Agricultural and Food Chemistry 55・4
  
  Pages: 1301-1307
- Data Source
  KAKENHI-PROJECT-17780136
[Journal Article] Significant Lability of Guaiacylglycerol-β-Phenacyl Ether under Alkaline Conditions2007
- Author(s)
  Aiko Imai, Tomoya Yokoyama, Yuji Matsumoto, and Gyosuke Meshitsuka
- Journal Title
  
  J. Agric. Food Chem 55(22)
  
  Pages: 9043-9046
- Data Source
  KAKENHI-PROJECT-17208015
[Journal Article] Detailed Examination of the Degradation of Phenol Derivatives under Oxygen Delignification Conditions2007
- Author(s)
  Tomoya Yokoyama, Yuji Matsumoto, Gyosuke Meshitsuka
- Journal Title
  
  Journal of Agricultural and Food Chemistry 55(4)
  
  Pages: 1301-1307
- Data Source
  KAKENHI-PROJECT-17208015
[Journal Article] Significant Lability of Guaiacylglycerol-β-Phenacyl Ether under Alkaline Conditions2007
- Author(s)
  Aiko Imai, Tomoya Yokoyama, Yuji Matsumoto, and Gyosuke Meshitsuka
- Journal Title
  
  J.Agric.Food Chem 55(22)
  
  Pages: 9043-9046
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-17208015
[Journal Article] Characterization of active oxygen species under oxygen-alkali bleaching conditions2005
- Author(s)
  Tomoya Yokoyama, Yuji Matsumoto and Gyosuke Meshitsuka
- Journal Title
  
  Holzforschung 59(3)
  
  Pages: 269-275
- Data Source
  KAKENHI-PROJECT-17208015
[Journal Article] Characterization of Active Oxygen Species under Oxygen-Alkali Bleaching Conditions2005
- Author(s)
  Tomoya Yokoyama, Yuji Matsumoto, Gyosuke Meshistuska
- Journal Title
  
  Holzforschung 59・3
  
  Pages: 269-275
- Data Source
  KAKENHI-PROJECT-17780136
[Journal Article] Significance of benzylic hydroxymethylene group in the reaction of lignin side-chain with active oxygen species under oxygen bleaching conditions
- Author(s)
  Satoshi Ohmura,Tomoya Yokoyama,Yuji Matsumoto
- Journal Title
  
  J. Wood Sci.
- DOI
  10.1007/s10086-013-1339-1
- NAID
  40019744865
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-20688007
[Patent] 木粉を溶解する為の溶媒2008
- Inventor(s)
  松本雄二、横山朝哉、ワンチグオ
- Industrial Property Number
  2008-211334
- Filing Date
  2008-08-20
- Data Source
  KAKENHI-PROJECT-17208015
[Patent] 木粉を溶解するための溶媒2008
- Inventor(s)
  松本雄二、横山朝哉、王志国
- Industrial Property Rights Holder
  松本雄二、横山朝哉、王志国
- Industrial Property Number
  2008-211334
- Filing Date
  2008-08-20
- Data Source
  KAKENHI-PROJECT-17208015
[Presentation] Stereo-preferential degradation of the erythro and threo isomers of β-O-4 type lignin model compounds in various oxidation treatments2017
- Author(s)
  Pattaraporn Posoknistakul、秋穂知、秋山拓也、横山朝哉、松本雄二
- Organizer
  第67回日本木材学会大会
- Place of Presentation
  九州大学箱崎キャンパス（福岡県福岡市）
- Year and Date
  2017-03-17
- Data Source
  KAKENHI-PROJECT-25450237
[Presentation] Stereo-preferential degradation of the erythro and threo isomers of β-O-4 type lignin model compounds under hydrogen peroxide bleaching conditions and its relation to the type of major degradation products2016
- Author(s)
  Pattaraporn Posoknistakul、秋山拓也、横山朝哉、松本雄二
- Organizer
  第61回リグニン討論会
- Place of Presentation
  京都大学生存圏研究所（京都府宇治市）
- Year and Date
  2016-10-27
- Data Source
  KAKENHI-PROJECT-25450237
[Presentation] Stereo-preference of hydroxyl and oxyl anion radicals in the reaction with the erythro and threo isomers of β-O-4 type lignin model compounds under hydrogen peroxide bleaching conditions2016
- Author(s)
  Pattaraporn Posoknistakul、秋山拓也、横山朝哉、松本雄二
- Organizer
  The 5th International Symposium on Emerging Technologies of Pulping and Papermaking
- Place of Presentation
  華南理工大学（中国広東省広州市）
- Year and Date
  2016-11-07
- Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-25450237
[Presentation] 二酸化マンガンによるリグニンモデル化合物の酸化反応2015
- Author(s)
  秋穂知、横山朝哉、松本雄二
- Organizer
  第60回リグニン討論会
- Place of Presentation
  筑波大学大学会館、茨城県つくば市
- Year and Date
  2015-11-05
- Data Source
  KAKENHI-PROJECT-25450237
[Presentation] Stereo-preferential degradation of the erythro and threo isomers of β-O-4 type lignin model compounds under oxygen delignification conditions2015
- Author(s)
  パッタラボルン　ポソクニスタクン、秋山拓也、横山朝哉、松本雄二
- Organizer
  第60回リグニン討論会
- Place of Presentation
  筑波大学大学会館、茨城県つくば市
- Year and Date
  2015-11-05
- Data Source
  KAKENHI-PROJECT-25450237
[Presentation] Effect of the structural difference of β-O-4 type lignin model compounds on the reaction with active oxygen species under oxygen bleaching conditions2015
- Author(s)
  パッタラボルン　ポソクニスタクン、横山朝哉、松本雄二
- Organizer
  第82回紙パルプ研究発表会
- Place of Presentation
  東京大学弥生講堂、東京都文京区
- Year and Date
  2015-06-04
- Data Source
  KAKENHI-PROJECT-25450237
[Presentation] Stereo-preferential degradation of the erythro and threo isomers of β-O-4 type lignin model compounds under oxygen delignification conditions2015
- Author(s)
  Pattaraporn Posonistakul, Tomoya Yokoyama, and Yuji Matsumoto
- Organizer
  The 18th International Symposium on Wood, Fiber and Pulping Chemistry
- Place of Presentation
  BOKU University, Wienna, Austria
- Year and Date
  2015-09-09
- Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-25450237
[Presentation] Analysis of kinetic isotope effect in hydrogen abstraction from carbohydrate by active oxygen species2012
- Author(s)
  Tomoya Yokoyama
- Organizer
  The 4th International Conference on Pulping, Papermaking, and Biotechnology
- Place of Presentation
  China (Nanjing)
- Invited
- Data Source
  KAKENHI-PROJECT-20688007
[Presentation] Analysis of kinetic isotope effect in hydrogen abstraction from carbohydrate by active oxygen species2012
- Author(s)
  Tomoya Yokoyama et al.
- Organizer
  The 4th International Conference on Pulping,Papermaking,and Biotechnology
- Place of Presentation
  Nanjing,China
- Year and Date
  2012-11-19
- Data Source
  KAKENHI-PROJECT-20688007
[Presentation] Investigation of hydrogen abstraction from methyl glucoside by active oxygen species under oxygen bleaching conditions2010
- Author(s)
  Tomoya Yokoyama
- Organizer
  4th International Symposium on Emerging Technologies of Pulping and Papermaking
- Place of Presentation
  South China University of Technology, Guangzhou, China
- Year and Date
  2010-11-10
- Data Source
  KAKENHI-PROJECT-20688007
[Presentation] Investigation of hydrogen abstraction from methyl glucoside by active oxygen species under oxygen bleaching conditions2010
- Author(s)
  Tomoya Yokoyama et al.
- Organizer
  The 4th International Symposium on Emerging Technologies of Pulping and Papermaking
- Place of Presentation
  Guangzhou,China
- Year and Date
  2010-11-10
- Data Source
  KAKENHI-PROJECT-20688007
[Presentation] Quantitative relationships between structure of lignin and its reactivity2009
- Author(s)
  Yuji Matsumoto, Deded Sarip Nawawi, Wasrin Syafii, Iori Tomoda, Yosuke Uchida, Zhiguo Wang, Takuya Akiyama, Tomoya Yokoyama
- Organizer
  2009 ACS American Chemical Society
- Place of Presentation
  Salt Lake Ccity
- Data Source
  KAKENHI-PROJECT-17208015
[Presentation] 酸素脱リグニンのメカニズムについて2009
- Author(s)
  横山朝哉
- Organizer
  平成21年度紙パルプ年次大会前日行事ラウンド・テーブル・ディスカッション
- Place of Presentation
  仙台市青葉区中央仙台市情報・産業プラザ
- Year and Date
  2009-10-06
- Data Source
  KAKENHI-PROJECT-20688007
[Presentation] Studies on the effect of ball milling on lignin structure by the use of complete wood dissolution2008
- Author(s)
  Zhiguo Wang, Tomoya Yokoyama, HOU-min Chang, Yuji Matsumoto
- Organizer
  International Conference on Pulping, Papermaking and Biotechnology 2008
- Place of Presentation
  Nanjing, China
- Year and Date
  2008-11-04
- Data Source
  KAKENHI-PROJECT-17208015
[Presentation] Lignin content in non-wood cell walls2008
- Author(s)
  Hirotaka Nkamura, Tomoya Yokoyama, Yuji Mtsumoto, Zhenfu Jin
- Organizer
  International Conference on Pulping, Papermaking and Biotechnology 2008
- Place of Presentation
  Nanjing, China
- Year and Date
  2008-11-04
- Data Source
  KAKENHI-PROJECT-17208015
[Presentation] Variation in the Chemical Structure of Lignin in Tropical Wood Species2008
- Author(s)
  Deded Sarip Nawawi, Wasrin Syafii, Iori Tomoda, Yosuke Uchida, Tomoya Yokoyama, Yuji Matsumoto
- Organizer
  2008 ICPPB International Conference on Pulping, Papermaking and Biotechnology
- Place of Presentation
  Nanjing, China
- Data Source
  KAKENHI-PROJECT-17208015
[Presentation] 酸素脱リグニン過程における活性酸素種による炭水化物被攻撃部位の特定1.アノマー位について2008
- Author(s)
  横山朝哉
- Organizer
  第75回紙パルプ研究発表会
- Place of Presentation
  東京都江戸川区船堀
- Year and Date
  2008-06-26
- Data Source
  KAKENHI-PROJECT-20688007
[Presentation] 非木質組織のリグニン定量2008
- Author(s)
  戸田守一、中村裕貴、横山朝哉、松本雄二
- Organizer
  第53回リグニン討論会
- Place of Presentation
  東京
- Year and Date
  2008-10-31
- Data Source
  KAKENHI-PROJECT-17208015
[Presentation] Analysis of lignin by the use of whole wood solution consisting of DMSO-LiCl2008
- Author(s)
  王志国、横山朝哉、松本雄二
- Organizer
  第53回リグニン討論会
- Place of Presentation
  東京
- Year and Date
  2008-10-31
- Data Source
  KAKENHI-PROJECT-17208015
[Presentation] Variation in the chemical structure of lignin in tropical wood species2008
- Author(s)
  Deded Sarip Nawawi, Tomoya Yokoyama, Yuji Matsumoto, Wasrin Syafii, Iori Tomoda, Yosuke Uchida
- Organizer
  International Conference on Pulping, Papermaking and Biotechnology 2008
- Place of Presentation
  Nanjing, China
- Year and Date
  2008-11-04
- Data Source
  KAKENHI-PROJECT-17208015
[Presentation] Evaluation of Anomeric Position of Carbohydrate as a Reaction Site of Active Oxygen Species under Oxygen Delignification Conditions2008
- Author(s)
  Tomoya Yokoyama
- Organizer
  2008 International Pulp Bleaching Conference
- Place of Presentation
  Quebec City, QC, Canada
- Year and Date
  2008-06-03
- Data Source
  KAKENHI-PROJECT-20688007
[Presentation] Dissolution of finely milled wood into organic solvent and its potential appllcation for chemical analysis of cell wall components2008
- Author(s)
  Zhiguo Wang, Tomoya Yokoyama, Hou-min Chang, Yuji Matsumoto
- Organizer
  10th European Workshop on Lignocellulosics and pulp
- Place of Presentation
  Stockholm. Sweden
- Year and Date
  2008-08-25
- Data Source
  KAKENHI-PROJECT-17208015
[Presentation] Change of lignin structure during MWL isolation process2008
- Author(s)
  Aya Fujimoto, Zhiguo Wang, Tomoya Yokoyama, Yuji Matsumoto, Gyosuke Meshitsuka, Hou-min Chang
- Organizer
  International Symposium on Wood Science and Technology
- Place of Presentation
  Harbin, China
- Year and Date
  2008-09-27
- Data Source
  KAKENHI-PROJECT-17208015
[Presentation] Evaluation of anomeric position of carbohydrate as a reaction site of active oxygen species under oxygen delignification conditions2008
- Author(s)
  Tomoya Yokoyama et al.
- Organizer
  International Pulp Bleaching Conference
- Place of Presentation
  Quebec City,QC,Canada
- Year and Date
  2008-06-03
- Data Source
  KAKENHI-PROJECT-20688007
[Presentation] Reactivity of Active Oxygen Species toward the Anomeric Position of Carbohydrate2008
- Author(s)
  Tomoya Yokoyama
- Organizer
  International Conference on Pulping, Papermaking and Biotechnology 2008
- Place of Presentation
  南京、中国
- Year and Date
  2008-11-05
- Data Source
  KAKENHI-PROJECT-20688007
[Presentation] 塩基性条件下におけるグアイアシルグリセロール-β-フェナシルエーテルの易開裂性について2007
- Author(s)
  横山朝哉
- Organizer
  第74回紙パルプ研究発表会
- Place of Presentation
  タワーホール船堀(東京都江戸川区)
- Year and Date
  2007-06-12
- Data Source
  KAKENHI-PROJECT-17780136
[Presentation] Absolute Amount of b-O-4 Structure in Wood and Non-wood Cell Wall2007
- Author(s)
  Hirotaka Nakamura, Deded S. Nawawi, Kenya Kondo, Zhenfu Jin, Takuya Akiyama, Tomoya Yokoyama, Yuji Matsumoto
- Organizer
  2007 ISWFPC International Symposium on Wood, Fiber and Pulping Chemistry
- Place of Presentation
  Durban, South Africa
- Data Source
  KAKENHI-PROJECT-17208015
[Presentation] Variety of Lignin Structure in Angiosperms and Their Reaction Woods2007
- Author(s)
  Yuji Matsumoto, Deded Sarip Nawawi, Wasrin Syafii, Hirotaka Nakamura, Takuya Akiyama, Tomoya Yokoyama, Gyosuke Meshitsuka
- Organizer
  2007 IUFRO International Union of Forest Research Organization, All Division 5 meeting
- Place of Presentation
  Taipei
- Data Source
  KAKENHI-PROJECT-17208015
[Presentation] Significant lability of guaiacylglycerol-β-phenacyl ether under alkaline conditions2007
- Author(s)
  Tomoya Yokoyama
- Organizer
  The 14th International Symposium on Wood, Fiber, and Pulping Chemistry (ISWFPC)
- Place of Presentation
  International Convention Center (Durban, South Africa)
- Year and Date
  2007-06-26
- Data Source
  KAKENHI-PROJECT-17780136
[Presentation] 塩基性条件下におけるグアイアシルグリセロール-β-フェナシルエーテルの易開裂性について2007
- Author(s)
  横山朝哉
- Organizer
  第57回日本木材学会大会
- Place of Presentation
  安田女子大学(広島市安佐南区)
- Year and Date
  2007-08-08
- Data Source
  KAKENHI-PROJECT-17780136
[Presentation] Variety of lignin structure in angiosperms and their reaction wood2007
- Author(s)
  Yuji Matsumoto, Nawawi Ds, Wasrin Shaafii, Hirotaka Nakamura, Takuya Akiyama, Tomoya Yokoyama, Gyosuke Meshitsuka
- Organizer
  2007IUFRO All Division 5 Conference
- Place of Presentation
  Taipei,Taiwan
- Year and Date
  2007-10-29
- Data Source
  KAKENHI-PROJECT-17208015
[Presentation] 酸素脱リグニン過程における活性酸素種による炭水化物被攻撃部位の特定５
- Author(s)
  中川明彦、横山朝哉、松本雄二
- Organizer
  第81回紙パルプ研究発表会
- Place of Presentation
  東京大学弥生講堂
- Year and Date
  2014-06-02 – 2014-06-03
- Data Source
  KAKENHI-PROJECT-25450237
[Presentation] Effect of the structural difference of β-O-4 type lignin model compounds on the reaction with active oxygen species under oxygen bleaching conditionis
- Author(s)
  Pattaraporn Posoknistakul, Tomoya Yokoyama, and Yuji Matsumoto
- Organizer
  第82回紙パルプ研究発表会
- Place of Presentation
  東京大学弥生講堂
- Year and Date
  2015-06-04 – 2015-06-05
- Data Source
  KAKENHI-PROJECT-25450237
[Presentation] Examination on which carbon-hydrogen bond of a carbohydrate model compound, methyl glucoside, is preferentially abstracted by active oxygen species under oxygen delignification conditions
- Author(s)
  Tomoya Yokoyama, Akihiko Nakagawa Fumiko Konishi and Yuji Matsumoto
- Organizer
  2014 International Pulp Bleaching Conference
- Place of Presentation
  Grenoble, France
- Year and Date
  2014-10-29 – 2014-10-31
- Data Source
  KAKENHI-PROJECT-25450237

1. MATSUMOTO Yuji (30183619)

# of Collaborated Projects: 4 results

# of Collaborated Products: 27 results
2. MESHITSUKA Gyosuke (30012074)

# of Collaborated Projects: 2 results

# of Collaborated Products: 7 results
3. TAKEMURA Akio (50183455)

# of Collaborated Projects: 1 results

# of Collaborated Products: 0 results
4. YOSHIDA Masato (30242845)

# of Collaborated Projects: 1 results

# of Collaborated Products: 0 results
5. IMAI Takanori (20252281)

# of Collaborated Projects: 1 results

# of Collaborated Products: 2 results
6. YAMAMOTO Hiroyuki (50210555)

# of Collaborated Projects: 1 results

# of Collaborated Products: 0 results
7. AKIYAMA Takuya (50553723)

# of Collaborated Projects: 1 results

# of Collaborated Products: 1 results
8. 新谷博幸 (30282693)

# of Collaborated Projects: 1 results

# of Collaborated Products: 0 results

Yokoyama Tomoya 横山 朝哉

横山 朝哉 ヨコヤマ トモヤ

YOKOYAMA Tomoya 横山 朝哉

Research Projects

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Co-Researchers

木質バイオマスの有効利用を実現させる副次生成リグニン由来ファインケミカルの創成Principal InvestigatorOngoing

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Construction of a novel bleaching method consisting of manganese-added alkaline oxygen treatment successively followed by acidic manganese treatmentPrincipal Investigator

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Analysis of chemical nature and interaction of cell wall components by the use of wood cell wall solvent system

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

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How does the structure of lignin correspond to mechanical circumstances

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製紙用パルプの酸素脱リグニン過程における炭水化物の分解抑制技術の開発Principal Investigator

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Utilization of Alkaline-oxygen Delignification Stage Waste Liquor for the Removal of Aluminum Toxicity to Plant Growth

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[Journal Article] Stereo-preference in the degradation of the erythro and threo isomers of β-O-4-type lignin model compounds in oxidation processes. Part 2: In the reaction with hydroxyl and oxyl anion radicals under hydrogen peroxide bleaching conditions2017

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[Journal Article] Stereo-preference in the degradation of the erythro and threo isomers of β-O-4-type lignin model compounds in oxidation processes. Part 1: In the reaction with active oxygen species under oxygen delignification conditions2016

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[Journal Article] Effect of stereo-configurational difference of carbohydrate model compound on the reaction with active oxygen species under oxygen delignification conditions2015

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[Journal Article] Investigation on the hydrogen abstraction from methyl glucoside by active oxygen species under oxygen delignification conditions. Part 5: Comprehensive results on experiments using deuterium labeled methyl glucosides2015

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[Journal Article] IR-SNOM analysis of occluding substances in lumina of xylem elements in sapwood of Quercus serrata attacked by Platypus quercivorus2013

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NAID

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[Journal Article] Analysis of lignin aromatic structure in wood based on the IR spectrum2012

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[Journal Article] Effect of solvent on the β-O-4 bond cleavage of a lignin model compound by tert-butoxide under mild conditions2012

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Yokoyama Tomoya 横山朝哉

横山朝哉ヨコヤマトモヤ

YOKOYAMA Tomoya 横山朝哉