Researcher basic information

• Doctor of Agriculture, The University of Tokyo
• Master of Agriculture, The University of Tokyo

• https://researchmap.jp/read0065412?lang=en

• https://jglobal.jst.go.jp/detail?JGLOBAL_ID=200901054860589835
• http://www.agr.hokudai.ac.jp/fres/forchem/

• 200901054860589835

• carbon cycle
• litter
• pulping
• bleaching
• biorefinery
• biodegradation
• chemical modification
• woody biomass
• lignin
• Wood Chemistry

• Life Science, Wood science, Wood chemistry

• Bachelor's degree program, School of Agriculture
• Master's degree program, Graduate School of Agriculture
• Doctoral (PhD) degree program, Graduate School of Agriculture

Research activity information

• Nov. 2018, リグニン討論会事務局, Excellent oral presentation award, 63th Lignin Symposium
  Assembly of electric double layer capacitor with electrode made from lignin and ionic liquid as an electrolyte
  Nutthira Pakkang;Keiichi Koda;Yasumitsu Uraki, Japan society, Japan
• Oct. 2018, 日本木材学会北海道支部, 2018年度・第16回北の木材科学賞（口頭発表部門）
  電気二重層キャパシタ用セパレータとしてのセルロースナノファイバー強化リグニンポリエステルフィルム
  Shogo Taira;Keiichi Koda;Yasumitsu Uraki, Japan society
• Nov. 2017, 日本木材学会北海道支部, 2017年度・第15回北の木材科学賞（口頭発表部門）
  リグニン形成におけるヘミセルロースの機能
  古川貴大;吉永 新;高部圭司;松尾朱実;玉井 裕;幸田圭一;浦木康光, Japan society
• Nov. 2015, Organizing Committee, The 60th Lignin Symposium, G-Award, The 60th Lignin Symposium (Oral Presentation)
  Preparation of electric double layer capacitor electrode from several kinds of isolated lignins
  Xiangyu You;Junlei Duan;Keiichi Koda;Yasumitsu Uraki;Tatsuhiko Yamada;Satoshi Kubo, 参照URL：
  http://www.agr.hokudai.ac.jp/news/2015/12/post-642.html, Japan society, Japan
• Nov. 2015, 日本木材学会北海道支部, 2015年度・第13回北の木材科学賞（展示発表部門）
  水溶性酢酸セルロースの電界紡糸とコンポジット化
  鶴原正啓;幸田圭一;浦木康光, 参照URL：
  http://www.agr.hokudai.ac.jp/news/2015/12/post-644.html, Japan society, Japan
• Nov. 2015, 日本木材学会北海道支部, 2015年度・第13回北の木材科学賞（口頭発表部門）
  PEGリグニン由来の電気二重層キャパシタ用セパレータの開発
  久保田 惇;磯崎友史;山田竜彦;幸田圭一;浦木康光, 参照URL：
  http://www.agr.hokudai.ac.jp/news/2015/12/post-643.html, Japan society, Japan
• Nov. 2014, 日本木材学会北海道支部, 2014年度・第12回北の木材科学賞（口頭発表部門）
  バイオエタノール生産に有用な両親媒性リグニン誘導体
  山本陽子;Ningning Cheng;五十嵐圭日子;幸田圭一;浦木康光, Japan society, Japan
• Mar. 2014, 日本森林学会, 日本森林学会学生ポスター賞
  遡上したサケがもたらす窒素の落葉層への滞留
  福井喬史;宮本敏澄;長坂 有;長坂晶子;幸田圭一;玉井 裕;矢島 崇, Japan society, Japan
• Nov. 2013, 日本木材学会北海道支部, 2013年度・第11回北の木材科学賞（展示発表部門）
  香気成分の定量的分析によるインドネシア産沈香の評価
  石井貴史;幸田圭一;玉井 裕;Ina Winarni;Maman Turjama;浦木康光, Japan society, Japan
• Nov. 2012, 日本木材学会北海道支部, 2012年度・第10回北の木材科学賞（展示発表部門）
  ミズナラ緑葉に含まれるリグニンの地域間差異
  川口 新;幸田圭一;宮本敏澄;浦木康光, Japan society, Japan
• Nov. 2012, 日本木材学会北海道支部, 2012年度・第10回北の木材科学賞（口頭発表部門）
  ヒドロキシプロピルセルロースゲルの熱応答性 －架橋剤が及ぼす影響－
  神田高志;幸田圭一;浦木康光, Japan society, Japan
• Jun. 2012, 日本森林技術協会, 第二十二回学生森林技術研究論文コンテスト 日本森林技術協会理事長賞
  オゾン酸化によるクラフトリグニンの改質-木質バイオマス系ポリカルボン酸の調製-
  磯崎友史;主指導教員;幸田圭一;副指導教員;浦木康光, Official journal, Japan
• Nov. 2011, 日本木材学会北海道支部, 2011年度・第9回北の木材科学賞（展示発表部門）
  両親媒性リグニンを用いたAE型セメント分散剤の開発
  麻生知裕;幸田圭一;山田竜彦;久保智史;中嶋 勇;浦木康光, Japan society, Japan
• Nov. 2011, 日本木材学会北海道支部, 2011年度・第9回北の木材科学賞（口頭発表部門）
  両親媒性リグニンによる酵素糖化の改善
  及川千皓;イナ・ウィナルニ;幸田圭一;山田竜彦;浦木康光, Japan society, Japan
• Nov. 2010, 日本木材学会北海道支部, 2010年度・第8回北の木材科学賞（口頭発表部門）
  エレクトロスピニング法によるセルロースアセテート・ナノファイバーの調製とその利用
  冨樫文哉;幸田圭一;浦木康光, Japan society, Japan
• Jul. 2010, セルロース学会, セルロース学会第17回香川大会 ポスター賞
  ヘミセルロース吸着ハニカムパターン化セルロースの調製とその利用
  田崎裕佳;浦木康光;幸田圭一;山本貞明;藪 浩;下村政嗣, Japan society, Japan
• 2010, Oral Presentation Award at the 42nd annual meeting of Hokkaido Branch, Japan Wood Research Society, Asahikawa, Nov. 9, 2010
• 2010, Poster Award at the 17th annual meeting of the Cellulose Society of Japan, Kagawa, Jul. 15-16, 2010
• Nov. 2009, 日本木材学会北海道支部, 2009年度・第7回北の木材科学賞（口頭発表部門）
  高界面活性リグニン誘導体の調製とその分散性能の評価
  本間春海;浦木康光;幸田圭一;久保智史;山田竜彦;松下泰幸;福島和彦, Japan society, Japan
• 2009, Oral Presentation Award at the 41st annual meeting of Hokkaido Branch, Japan Wood Research Society, Asahikawa, Nov. 9, 2009

• 斜面崩壊地に更新するカラマツの外生菌根相と遷移【予報】
  五十嵐 蘭; 幸田 圭一; 玉井 裕
  北方森林研究, 73, 7, 10, 2025, [Peer-reviewed]
  Japanese
• 骨炭と外生菌根菌がカラマツ稚樹の成長へ及ぼす影響 : 森の木々の根本で焼骨を土に還すドイツの自然葬への取り組み
  小池, 孝良; 上田, 裕文; 幸田, 圭一; 北岡, 哲; 佐々木, 圭子; 藤戸, 永志; 伊藤, 悠也; 玉井, 裕; 渡部, 敏裕
  北方森林保全技術, 41, 16, 20, 2023, [Peer-reviewed]
  Japanese, Research institution
• A branched structure provides kraft lignins a denser morphology and a high molar mass for a given hydrodynamic radius
  Linping Wang; Kengo Shigetomi; Keiichi Koda; Aori Gele; Yasumitsu Uraki
  Holzforschung, 74, 6, 551, 558, 25 Jun. 2020, [Peer-reviewed]
  English, Scientific journal
• Cellulose acetate with CTA I polymorph can be defibrated into nanofibers to produce a highly transparent nanopaper
  Shogo Taira; Masataka Tsuruhara; Ryo Saito; Keiichi Koda; Yasumitsu Uraki; Haruo Konno; Shu Shimamoto
  Cellulose, 27, 9, 4991, 5001, Springer Science and Business Media LLC, Jun. 2020, [Peer-reviewed]
  Scientific journal
• Preparation of kraft lignin-based activated carbon fiber electrodes for electric double layer capacitors using an ionic liquid electrolyte
  Nutthira Pakkang; Manish Kumar; Shogo Taira; Keiichi Koda; Kengo Shigetomi; Yasumitsu Uraki
  Holzforschung, 74, 6, 577, 588, Walter de Gruyter GmbH, 29 May 2020, [Peer-reviewed]
  Scientific journal, This article demonstrates the development of activated carbon fiber electrodes produced from hardwood kraft lignin (HKL) to fabricate electric double layer capacitors (EDLCs) with high energy and power densities using an ionic liquid (IL) electrolyte. A mixture solution of HKL, polyethylene glycol as a sacrificial polymer, and hexamethylenetetramine as a crosslinker in dimethylformamide/acetic acid (6/4) was electrospun, and the obtained fibers were easily thermostabilized, followed by carbonization and steam activation to yield activated carbon fibers (ACFs). The electrochemical performance of EDLCs assembled with the ACFs, 1-ethyl-3-methylimidazolium tetrafluoroborate (EMIBF₄) as an IL electrolyte and a cellulosic separator was insufficient due to the low conductivity of the electrode. The conductivity of the electrode was improved successfully by spraying conductive carbon black (CB) onto the fibers mat during electrospinning. The CB containing electrodes with improved conductivity gave the resulting EDLCs a higher electrochemical performance, with an energy density of 91.5 Wh kg⁻¹ and a power density of 76.2 kW kg⁻¹.
• Effect of Vapor-Phase Surface Acetylation of Japanese Cedar Wood on Fungal Degradation and Dimensional Stability
  Yuu Hasegawa; Mitsunori Mori; Keiichi Koda; Yasumitsu Uraki
  Journal of Wood Chemistry and Technology, 40, 1, 1, 14, 02 Jan. 2020, [Peer-reviewed]
  English, Scientific journal
• Comparison of Dehydrogenation Polymers by Commercial Enzymes, Laccase from Rhus vernicifera and Horseradish Peroxidase
  Tatsuya Matsumoto; Keiichi Koda; Kengo Shigetomi; Manish Kumar; Yasumitsu Uraki
  Lignin, 1, 20, 28, Jan. 2020, [Peer-reviewed], [Corresponding author]
  English, Scientific journal
• Development of Lignin-Based Terpolyester Film and Its Application to Separator Material for Electric Double-Layer Capacitor
  Keiichi Koda; Shogo Taira; Atsushi Kubota; Tomofumi Isozaki; Xiangyu You; Yasumitsu Uraki; Kazuki Sugimura; Yoshiyuki Nishio
  Journal of Wood Chemistry and Technology, 39, 3, 198, 213, Informa UK Limited, 04 May 2019, [Peer-reviewed]
  English, Scientific journal
• Direct electrospinning of cellulose acetate onto polyurethane sheet and effect of its saponification on mechanical properties
  Md. Momotaz Ali; Nutthira Pakkang; Shogo Taira; Keiichi Koda; Koki Itoyama; Yasumitsu Uraki
  Journal of Wood Chemistry and Technology, 39, 4, 282, 295, Informa UK Limited, 2019, [Peer-reviewed]
  English, Scientific journal
• TEMPO-oxidized cellulose nanofiber-reinforced lignin based polyester films as a separator for electric double-layer capacitor
  Shogo Taira; Makoto Kurihara; Keiichi Koda; Kazuki Sugimura; Yoshiyuki Nishio; Yasumitsu Uraki
  Cellulose, 26, 1, 569, 580, Springer Science and Business Media LLC, Jan. 2019, [Peer-reviewed], [Invited]
  English, Scientific journal
• Preparation of water-in-oil microemulsion from the mixtures of castor oil and sunflower oil as makeup remover
  Nutthira Pakkang; Yasumitsu Uraki; Keiichi Koda; Manit Nithitanakul; Ampira Charoensaeng
  Journal of Surfactant and Detergents, 21, 6, 809, 816, Wiley, Aug. 2018, [Peer-reviewed]
  English, Scientific journal
• Determination of the absolute molar mass of acetylated eucalyptus kraft lignin by two types of size-exclusion chromatography combined with multi-angle laser light-scattering detectors
  Linping Wang; Yasumitsu Uraki; Keiichi Koda; Aori Gele; Xuesong Zhou; Fangeng Chen
  Holzforschung, 73, 4, 363, 369, Walter de Gruyter GmbH, 2018, [Peer-reviewed]
  English, Scientific journal,
  The molar mass (MM) and polydispersity indices (PDI) of acetylated hardwood kraft lignin (Ac-HWKL) and Ac-HWKL fractions were measured by size-exclusion chromatography with multi-angle laser light scattering (SEC-MALLS). The detectors worked at LL_{658 nm} and LL_{785 nm}. The MM of Ac-HWKL measured at 785 nm was much smaller than that measured at 658 nm. The number-average (Mn) and weight-average (Mw) molar masses of Ac-HWKL determined at 785 nm were approximately 6.2 and 6.5 times larger, respectively, than the values estimated using a conventional calibration curve created with authentic polystyrene standards in tetrahydrofuran (THF). Based on the Mw of Ac-HWKL fractions, the Mark-Houwink-Sakurada equation for Ac-HWKL was established to be [η]/ml g⁻¹=0.320 M^0.24 in THF and [η]/ml g⁻¹=0.142 M^0.26 in dimethyl sulfoxide (DMSO). These results demonstrate that Ac-HWKL has a more compact structure in an organic solvent than polystyrene.
• Ligninolytic Activity at 0 A degrees C of Fungi on Oak Leaves Under Snow Cover in a Mixed Forest in Japan
  Toshizumi Miyamoto; Keiichi Koda; Arata Kawaguchi; Yasumitsu Uraki
  MICROBIAL ECOLOGY, 74, 2, 322, 331, Aug. 2017, [Peer-reviewed]
  English, Scientific journal
• Optimization of simultaneous saccharification and fermentation conditions with amphipathic lignin derivatives for concentrated bioethanol production
  Ningning Cheng; Keiichi Koda; Yutaka Tamai; Yoko Yamamoto; Taichi E. Takasuka; Yasumitsu Uraki
  BIORESOURCE TECHNOLOGY, 232, 126, 132, May 2017, [Peer-reviewed]
  English, Scientific journal
• Association of amphipathic lignin derivatives with cellobiohydrolase groups improves enzymatic saccharification of lignocellulosics
  Yoko Yamamoto; Ningning Cheng; Keiichi Koda; Kiyohiko Igarashi; Yutaka Tamai; Yasumitsu Uraki
  CELLULOSE, 24, 4, 1849, 1862, Apr. 2017, [Peer-reviewed]
  English, Scientific journal
• Preparation of electric double layer capacitors (EDLCs) from two types of electrospun lignin fibers
  Xiangyu You; Junlei Duan; Keiichi Koda; Tatsuhiko Yamada; Yasumitsu Uraki
  HOLZFORSCHUNG, 70, 7, 661, 671, Jul. 2016, [Peer-reviewed]
  English, Scientific journal
• Preparation of High-Performance Internal Tandem Electric Double-Layer Capacitors (IT-EDLCs) from Melt-Spun Lignin Fibers
  Xiangyu You; Keiichi Koda; Tatsuhiko Yamada; Yasumitsu Uraki
  JOURNAL OF WOOD CHEMISTRY AND TECHNOLOGY, 36, 6, 418, 431, 2016, [Peer-reviewed]
  English, Scientific journal
• Preparation of electrode for electric double layer capacitor from electrospun lignin fibers
  Xiangyu You; Keiichi Koda; Tatsuhiko Yamada; Yasumitsu Uraki
  HOLZFORSCHUNG, 69, 9, 1097, 1106, Nov. 2015, [Peer-reviewed]
  English, Scientific journal
• Dehydrogenative Polymerization of Coniferyl Alcohol in Artificial Polysaccharides Matrices: Effects of Xylan on the Polymerization
  Qiang Li; Keiichi Koda; Arata Yoshinaga; Keiji Takabe; Masatsugu Shimomura; Yuji Hirai; Yutaka Tamai; Yasumitsu Uraki
  JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY, 63, 18, 4613, 4620, May 2015, [Peer-reviewed]
  English, Scientific journal
• Amphipathic lignin derivatives for enzymatic saccharification and fermentation of lignocellulosics
  Yoko Yamamoto; Ningning Cheng; Kiyohiko Igarashi; Keiichi Koda; Yasumitsu Uraki
  ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY, 249, Mar. 2015, [Peer-reviewed]
  English
• Amphipathic lignin derivatives to accelerate simultaneous saccharification and fermentation of unbleached softwood pulp for bioethanol production
  Ningning Cheng; Yoko Yamamoto; Keiichi Koda; Yutaka Tamai; Yasumitsu Uraki
  BIORESOURCE TECHNOLOGY, 173, 104, 109, Dec. 2014, [Peer-reviewed]
  English, Scientific journal
• Enzymatic Saccharification of Soda Pulp from Sago Starch Waste Using Sago Lignin-Based Amphipathic Derivatives
  Ina Winarni; Keiichi Koda; Totok K. Waluyo; Gustan Pari; Yasumitsu Uraki
  JOURNAL OF WOOD CHEMISTRY AND TECHNOLOGY, 34, 3, 157, 168, Jul. 2014, [Peer-reviewed]
  English, Scientific journal
• Improvement of Mechanical Properties of Softwood Lignin-Based Carbon Fibers
  Jian Lin; Keiichi Koda; Satoshi Kubo; Tatsuhiko Yamada; Makiko Enoki; Yasumitsu Uraki
  JOURNAL OF WOOD CHEMISTRY AND TECHNOLOGY, 34, 2, 111, 121, Jun. 2014, [Peer-reviewed]
  English, Scientific journal
• Preparation of Novel Lignin-Based Cement Dispersants from Isolated Lignins
  Tomohiro Aso; Keiichi Koda; Satoshi Kubo; Tatsuhiko Yamada; Isamu Nakajima; Yasumitsu Uraki
  JOURNAL OF WOOD CHEMISTRY AND TECHNOLOGY, 33, 4, 286, 298, Dec. 2013, [Peer-reviewed]
  English, Scientific journal
• Improvement of Enzymatic Saccharification of Unbleached Cedar Pulp with Amphipathic Lignin Derivatives
  Ina Winarni; Chihiro Oikawa; Tatsuhiko Yamada; Kiyohiko Igarashi; Keiichi Koda; Yasumitsu Uraki
  BIORESOURCES, 8, 2, 2195, 2208, 2013, [Peer-reviewed]
  English, Scientific journal
• A comparative study on litter decomposition and litter-decomposing fungal communities in some forest stands with different snow depth.
  Miyamoto Toshizumi; Koda Keiichi; Hishi Takuo
  The Japanese Forest Society Congress, 124, 818, 818, THE JAPANESE FORESTRY SOCIETY, 2013
  Japanese, 積雪深が異なる北海道内の4地点の森林において、冬期のリター分解とリター分解菌群集を比較した。ミズナラとトドマツの落葉をそれぞれ封入したリターバッグを10月に林床に設置し、12月、3月に回収して落葉の重量変化を調べた結果、全地点で積雪期においても分解は進んだが、積雪深が40cm以下の少雪地に比べて積雪深が1m以上の多雪地で分解が速く進んだ。多雪地の2地点間で比較すると積雪期間が長い地点での分解が速かったが、少雪地の2地点間で比較すると積雪期間が長い地点での分解が遅かった。林床の地表温度と土壌凍結深の測定結果より、多雪地の2地点では積雪期に土壌の凍結が起こらず約0 oCで安定していたが、少雪地の2地点では積雪期においても土壌凍結が起こっていたと推定された。土壌が凍結しても落葉分解は進むものの、微生物の分解活性が抑えられていたと考えられる。回収したミズナラとトドマツの落葉より得られた菌類の分離株について形態とrDNAのITS領域の塩基配列情報よる分類を行い、各地点の菌類相を比較した結果、積雪深によってリター分解菌群集が影響を受ける傾向が認められた。
• Thermal Mobility of beta-O-4-Type Artificial Lignin
  Yasumitsu Uraki; Yusuke Sugiyama; Keiichi Koda; Satoshi Kubo; Takao Kishimoto; John F. Kadla
  BIOMACROMOLECULES, 13, 3, 867, 872, Mar. 2012, [Peer-reviewed]
  English, Scientific journal
• CHEMICAL THERMOSTABILIZATION FOR THE PREPARATION OF CARBON FIBERS FROM SOFTWOOD LIGNIN
  Jian Lin; Satoshi Kubo; Tatsuhiko Yamada; Keiichi Koda; Yasumitsu Uraki
  BIORESOURCES, 7, 4, 5634, 5646, 2012, [Peer-reviewed]
  English, Scientific journal
• Novel Functions of Non-Ionic, Amphiphilic Lignin Derivatives
  Yasumitsu Uraki; Keiichi Koda; Tatsuhiko Yamada; Chihiro Oikawa; Tomohiro Aso
  FUNCTIONAL MATERIALS FROM RENEWABLE SOURCES, 1107, 243, +, 2012, [Peer-reviewed]
  English, International conference proceedings
• PREPARATION OF NOVEL LIGNIN-BASED CEMENT DISPERSANT VIA AMPHIPHILIC DERIVATIZATION OF TECHNICAL LIGNIN
  Tomohiro Aso; Keiichi Koda; Satoshi Kubo; Tatsuhiko Yamada; Isamu Nakajima; Yasumitsu Uraki
  PROCEEDING OF THE 4TH INTERNATIONAL CONFERENCE ON PULPING, PAPERMAKING AND BIOTECHNOLOGY (ICPPB '12), VOLS. I AND II, 90, 93, 2012, [Peer-reviewed]
  English, International conference proceedings
• PREPARATION OF CARBON FIBERS FROM SOFTWOOD LIGNIN THROUGH CHEMICAL THERMOSTABILIZATION
  Jian Lin; Satoshi Kubo; Tatsuhiko Yamada; Keiichi Koda; Yasumitsu Uraki
  PROCEEDING OF THE 4TH INTERNATIONAL CONFERENCE ON PULPING, PAPERMAKING AND BIOTECHNOLOGY (ICPPB '12), VOLS. I AND II, 860, 863, 2012, [Peer-reviewed]
  English, International conference proceedings
• Fabrication of honeycomb-patterned cellulose material that mimics wood cell wall formation processes
  Yasumitsu Uraki; Yutaka Tamai; Takuro Hirai; Keiichi Koda; Hiroshi Yabu; Masatsugu Shimomura
  MATERIALS SCIENCE & ENGINEERING C-MATERIALS FOR BIOLOGICAL APPLICATIONS, 31, 6, 1201, 1208, Aug. 2011, [Peer-reviewed]
  English, Scientific journal
• Chemicals from lignin based on thermal fusibility and amphiphilicity
  Keiichi Koda; Satoshi Kubo; Yasumitsu Uraki
  ACS Symposium Series, 1067, 261, 277, American Chemical Society, 2011, [Peer-reviewed]
  English, International conference proceedings
• UTILIZATION OF AMPHIPHILIC LIGNIN DERIVATIVES
  Yasumitsu Uraki; Harumi Homma; Chihiro Oikawa; Tomohiro Aso; Keiichi Koda
  16TH INTERNATIONAL SYMPOSIUM ON WOOD, FIBER AND PULPING CHEMISTRY, PROCEEDINGS, VOLS I & II, 165, 169, 2011, [Peer-reviewed]
  English, International conference proceedings
• Improvement of Saccharification of Empty Fruit Bunch and Japanese Cedar Pulps with an Amphiphilic Lignin Derivative
  Teuku Beuna Bardant; Chihiro Oikawa; Masanobu Nojiri; Keiichi Koda; Yanni Sudiyani; Tatsuhiko Yamada; Yasumitsu Uraki
  MOKUZAI GAKKAISHI, 56, 6, 420, 426, 2010, [Peer-reviewed]
  Japanese, Scientific journal
• Conversion of Technical Lignins to Amphiphilic Derivatives with High Surface Activity
  Harumi Homma; Satoshi Kubo; Tatsuhiko Yamada; Keiichi Koda; Yasuyuki Matsushita; Yasumitsu Uraki
  JOURNAL OF WOOD CHEMISTRY AND TECHNOLOGY, 30, 2, 164, 174, 2010, [Peer-reviewed]
  English, Scientific journal
• Wood density variations of tropical wood species: Implications to the physical and chemical properties of sawdust
  Rizki Maharani; Yutaka Tamai; Keiichi Koda; Yasuo Kojima; Minoru Terazawa
  Wood Research Journal (Journal of Indonesian Wood Research Society), 1, 1, 34, 39, 2010
  English, Scientific journal
• FUSIBILITY OF ISOLATED LIGNINS
  Yasumitsu Uraki; Keiichi Koda; Takao Kishimoto; Satoshi Kubo
  RESEARCH PROGRESS IN PAPER INDUSTRY AND BIOREFINERY (4TH ISETPP), VOLS 1-3, 315, 318, 2010, [Peer-reviewed]
  English, International conference proceedings
• FABRICATION OF ARTIFICIAL WOOD CELL WALL AND ITS APPLICATION
  Yuka Tasaki; Yasumitsu Uraki; Keiichi Koda; Sadaaki Yamamoto; Hiroshi Yabu; Masatsugu Shimomura
  RESEARCH PROGRESS IN PAPER INDUSTRY AND BIOREFINERY (4TH ISETPP), VOLS 1-3, 1465, 1468, 2010, [Peer-reviewed]
  English, International conference proceedings
• IMPROVEMENT OF CELLULASE ACTIVITY WITH AMPHIPHILIC LIGNIN DERIVATIVE
  Chihiro Oikawa; Keiichi Koda; Yasumitsu Uraki; Masanobu Nojiri; Tatsuhiko Yamada; Kiyohiko Igarashi
  RESEARCH PROGRESS IN PAPER INDUSTRY AND BIOREFINERY (4TH ISETPP), VOLS 1-3, 1306, 1309, 2010, [Peer-reviewed]
  English, International conference proceedings
• Evaluation of Reaction Efficiency of Thioacidolysis for Cleavage of -O-4 Interunitary Linkages by Using -O-4 Type Artificial Lignin Polymer
  Yoshie Kanazawa; Takao Kishimoto; Keiichi Koda; Kazuhiko Fukushima; Yasumitsu Uraki
  JOURNAL OF WOOD CHEMISTRY AND TECHNOLOGY, 29, 2, 178, 190, 2009, [Peer-reviewed]
  English, Scientific journal
• Reactivity of beta-O-4 Determination Methods to Artificial beta-O-4 Lignin Polymers
  Yoshie Kanazawa; Takao Kishimoto; Keiichi Koda; Kazuhiko Fukushima; Yasumitsu Uraki
  PROCEEDINGS OF INTERNATIONAL CONFERENCE ON PULPING, PAPERMAKING AND BIOTECHNOLOGY 2008: ICPPB '08, VOL I, 659, 663, 2008, [Peer-reviewed]
  English, International conference proceedings
• The change of lignin structure of the triploid Polulus tomentosa during kraft pulping
  Liu Yu; Zhan Huai-yu; Chen Jia-chuan; Keiichi Koda; Dimitris Argyropoulos
  Zhongguo Zaozhi Xuebao (Transaction of China Pulp and Paper), 21, 4, 14, 18, 2006, [Peer-reviewed]
  Chinese, Scientific journal
• Interference of carbohydrates in the determination of the methoxyl content of lignin in woody samples
  H Goto; K Koda; GL Tong; Y Matsumoto; G Meshitsuka
  JOURNAL OF WOOD CHEMISTRY AND TECHNOLOGY, 26, 1, 81, 93, 2006, [Peer-reviewed]
  English, Scientific journal
• Formation of methyl iodide from methoxyl-free compounds by hydriodic acid treatment
  H Goto; K Koda; GL Tong; Y Matsumoto; G Meshitsuka
  JOURNAL OF WOOD SCIENCE, 51, 3, 312, 314, 2005, [Peer-reviewed]
  English, Scientific journal
• Molecular weight-functional group relations in softwood residual kraft lignins
  K Koda; AR Gaspar; L Yu; DS Argyropoulos
  HOLZFORSCHUNG, 59, 6, 612, 619, 2005, [Peer-reviewed]
  English, Scientific journal
• Quantitative H-1 NMR analysis of alkaline polysulfide solutions
  DS Argyropoulos; YH Hou; R Ganesaratnam; DN Harpp; K Koda
  HOLZFORSCHUNG, 59, 2, 124, 131, 2005, [Peer-reviewed]
  English, Scientific journal
• Mechanisim of methyl iodide formation during the determination reaction of methoxyl group in lignin and wood
  H Goto; K Koda; GL Tong; Y Matsumoto; G Meshitsuka
  2nd International Symposium on Technologies Of Pulping, Papermaking and Biotechnology on Fiber Plants, Proceedings, 75, 79, 2004, [Peer-reviewed]
  English, International conference proceedings
• Oxidative cleavage of lignin aromatics during chlorine bleaching of kraft pulp
  K Koda; H Goto; H Shintani; Y Matsumoto; G Meshitsuka
  JOURNAL OF WOOD SCIENCE, 47, 5, 362, 367, 2001, [Peer-reviewed]
  English, Scientific journal
• Oxygen-weak base pulping of rice straw with minimum silica removal
  Seung-Young Park; Keiichi Koda; Yuji Matsumoto; Gyosuke Meshitsuka; Kenji Iiyama
  Kamipa Gikyoushi (Japan TAPPI Journal), 54, 9, 1245, 1251, JAPAN TECHNICAL ASSOCIATION OF THE PULP AND PAPER INDUSTRY, 2000, [Peer-reviewed]
  Japanese, Scientific journal, As we attempt to preserve forests and to decrease impact on environment, the development of novel technologies for the utilization of rice straw, especially to achieve complete delignification with minimum silica removal during its pulping, seems to be important and significant. It was examined whether or not oxygen-weak base pulping is useful for rice straw to control silica removal in this study. Delignification, silica removal and carbohydrate retention of rice straw during oxygen-sodium sulfite pulping and oxygen-ammonia pulping were compared with those during conventional alkaline pulping and oxygen-sodium hydroxide pulping. By an oxygen-sodium sulfite pulping of rice straw, sufficient delignification could be achieved without significant removal of silica into cooking liquor. The carbohydrate yield of oxygen-sodium sulfite pulping method was quite high (more than 80%) even when 95% of delignification was achieved, which is supported by the high retention of both cellulose and hemicellulose. In contrast to this, carbohydrate yield of oxygen-ammonia pulping was found to be rather low, even though high retention of silica was achieved. Low carbohydrate yield by this pulping was attributed to the significant degradation of both cellulose and hemicellulose.
• Quantitative study on the possible formation of chloroform during chlorine bleaching of kraft pulp
  K Koda; H Shintani; Y Matsumoto; G Meshitsuka
  JOURNAL OF WOOD SCIENCE, 46, 4, 339, 341, 2000, [Peer-reviewed]
  English, Scientific journal
• Kinetic comparison between delignification and silica removal during alkaline pulping of rice straw
  Seung-Young Park; Keiichi Koda; Yuji Matsumoto; Gyosuke Meshitsuka; Kenji Iiyama
  Japan TAPPI Journal, 53, 11, 1492, 1499, JAPAN TECHNICAL ASSOCIATION OF THE PULP AND PAPER INDUSTRY, 1999, [Peer-reviewed]
  Japanese, Scientific journal, A systematic study on kinetics of delignification and silica removal is necessary for optimization and a control of rice straw pulping process. Delignification and silica removal from four fractions (internode, sheath, blade and ear) of rice straw were kinetically investigated under soda pulping conditions in the temperature ranges from 30 to 70°C and from 100 to 140°C. Both delignification and silica removal by sodium hydroxide treatment were suggested to be a pseudo first order reaction. The delignification progress of rice straw was separated clearly into at least two phases. About 80% delignification was achieved in the first phase even under a mild condition at 80°C under which the degradation reaction of wood lignin was almost impossible to occur. The delignification rates of the internode, sheath and blade are larger than that of ear. It was confirmed that silica removal is a kinetically easier process than delignification under alkali pulping conditions. The rate of silica removal is greater than that of delignification, and the former is easier to increase with increasing temperature. Therefore, it was concluded that complete delignification from rice straw without serious silica removal can not be achieved as long as sodium hydroxide is employed as a cooking reagent. Other components of cell wall (i.e. hemicellulose) had virtually no effect on the kinetic parameters of silica removal.
• Evaluation of the extent of the oxidation reaction during chlorine bleaching of pulp
  K Koda; H Shintani; Y Matsumoto; G Meshitsuka
  JOURNAL OF WOOD SCIENCE, 45, 2, 149, 153, 1999, [Peer-reviewed]
  English, Scientific journal
• Resistance of highly chlorinated lignin in pulp toward chlorine oxidation
  H Shintani; K Koda; Y Matsumoto; G Meshitsuka
  ISWPC - 9TH INTERNATIONAL SYMPOSIUM ON WOOD AND PULPING CHEMISTRY - POSTER PRESENTATIONS, 1041, 1044, 1997, [Peer-reviewed]
  English, International conference proceedings

• S1+G型の引張あて材木部繊維におけるリグニンと非セルロース性多糖類、AGPの分布．
  吉永 新; 粟野達也; 幸田圭一; 玉井 裕; 浦木康光; 高部圭司, 第69回日本木材学会大会講演要旨集, Mar. 2019
  Japanese, Summary national conference
• コニフェリルアルコールの脱水素重合に及ぼすヘミセルロースの効果．
  松尾朱実; 古川貴大; 玉井 裕; 幸田圭一; 浦木康光; 吉永 新; 高部圭司, 第68回日本木材学会大会講演要旨集, Mar. 2018
  Japanese, Summary national conference
• 樹木組織中での安定同位体標識モノリグノール類の移動～同位体顕微鏡による可視化～
  小川真由; 幸田圭一; 重富顕吾; 坂本直哉; 高部圭司; 吉永 新; 浦木康光, 第67回日本木材学会大会講演要旨集, 129, 129, Mar. 2017
  Japanese, Summary national conference
• 両親媒性リグニン誘導体を用いたリグノセルロースからのバイオエタノール製造
  CHENG Ningning; 山本陽子; 幸田圭一; 浦木康光; 五十嵐圭日子, セルロース学会年次大会講演要旨集, 23rd, 2016
• Utilization of wood cell wall components
  Yasumitsu Uraki; Keiichi Koda, JOURNAL OF WOOD SCIENCE, 61, 5, 447, 454, Oct. 2015, [Peer-reviewed], [Invited]
  English, Book review
• Honeycomb-patterned cellulose films as a promising tool to investigate deformation of wood cross section and wood cell wall formation
  Yasumitsu Uraki; Qiang Li; Teuku Bardant; Keiichi Koda, ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY, 249, Mar. 2015
  English, Summary international conference
• セルラーゼ活性を増強する両親媒性リグニン誘導体-セルラーゼとの相互作用解析-
  山本陽子; CHENG Ningning; WINARNI Ina; 五十嵐圭日子; 幸田圭一; 浦木康光, セルロース学会年次大会講演要旨集, 21st, 2014
• バイオエタノール生産に有用な両親媒性リグニン誘導体
  山本陽子; CHENG Ningning; 幸田圭一; 浦木康光; 五十嵐圭日子, 日本木材学会北海道支部講演集(Web), 46, 2014
• セルラーゼと両親媒性リグニン誘導体との相互作用
  山本陽子; 及川千皓; 幸田圭一; 浦木康光; 五十嵐圭日子, セルロース学会年次大会講演要旨集, 20th, 2013
• Wood biorefinery IV: Chemical pulping and utilization of separated components
  Yasumitsu Uraki; Keiichi Koda, Zairyo/Journal of the Society of Materials Science, Japan, 61, 10, 867, 871, Oct. 2012, [Peer-reviewed]
  English, Introduction scientific journal
• Potential Functions and Utilization of Amphiphilic Lignin Derivatives
  Yasumitsu Uraki; Keiichi Koda; Tatsuhiko Yamada, 機能材料, 32, 2, 42, 47, 2012, [Invited]
  シーエムシー出版, Japanese, Introduction commerce magazine
• Amphiphilic lignin derivatives as cellulase-aid agent and cement admixture
  Yasumitsu Uraki; Chihiro Oikawa; Tomohiro Aso; Keiichi Koda; Tatsuhiko Yamada, ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY, 241, Mar. 2011
  English, Summary international conference
• セルラーゼ活性増強剤となるリグニン誘導体の開発
  及川千皓; イナウィナルニ; 幸田圭一; 浦木康光; 山田竜彦; 野尻昌信; 五十嵐圭日子, 高分子学会北海道支部研究発表会講演要旨集, 45th, 2011
• 両親媒性リグニン誘導体とセルラーゼ間の相互作用の解明
  及川千皓; WINARNI Ina; 幸田圭一; 浦木康光; 山田竜彦; 野尻昌信; 五十嵐圭日子, セルロース学会年次大会講演要旨集, 18th, 2011
• 両親媒性リグニン誘導体とセルラーゼ間の相互作用の解明
  及川千皓; イナウィナルニ; 幸田圭一; 浦木康光; 山田竜彦; 野尻昌信; 五十嵐圭日子, 日本木材学会北海道支部講演集(Web), 43, 2011
• ヘミセルロース吸着ハニカムセルロースフィルムの調製とその肝実質細胞培養基質としての有用性の評価
  田崎裕佳; テウク ベルナバルダント; 浦木康光; 幸田圭一; 藪浩; 下村政嗣, 高分子学会北海道支部研究発表会講演要旨集, 45th, 2011
• ヘミセルロース吸着ハニカムパターン化セルロースの物性とその応用
  田崎裕佳; BARDANT Teuku Berna; 浦木康光; 幸田圭一; 平井悠司; 藪浩; 下村政嗣, セルロース学会年次大会講演要旨集, 18th, 2011
• セルラーゼ活性増強剤となるリグニン誘導体の開発
  及川千皓; 幸田圭一; 浦木康光; 山田竜彦; 野尻昌信; 五十嵐圭日子, セルロース学会年次大会講演要旨集, 17th, 2010
• ヘミセルロース吸着ハニカムパターン化セルロースの調製とその応用
  田崎裕佳; 浦木康光; 幸田圭一; 山本貞明; 藪浩; 下村政嗣, セルロース学会年次大会講演要旨集, 17th, 2010
• イネワラをパルプ原料として利用するための基礎的技術の開発
  環境科学総合研究所年報, 19, 125, 133, 2000
  Japanese, Introduction research institution
• Advanced technologies for the pulping of rice straw
  Annual report of interdisiplinary research institute of environmental sciences, 19, 125, 133, 2000

• 森林保護学の基礎
  小池, 孝良; 中村, 誠宏; 宮本, 敏澄, 【コラム４・４】ヘミセルロースに含まれる糖類
  農山漁村文化協会, Apr. 2021, 9784540122101, 191p, p.87, Japanese, Textbook, [Contributor]
• Protocol for analysis of plant cell wall
  石井, 忠; 石水, 毅; 梅澤, 俊明; 加藤, 陽治; 岸本, 崇生; 小西, 照子; 松永, 俊朗, 2.1.3 31P NMRによるリグニン水酸基の定量
  弘前大学出版会, Feb. 2016, 9784907192211, xi, 403p, p.65-70, Japanese, Scholarly book, [Contributor]
• Encyclopedia of polymeric nanomaterials
  Yasumitsu Uraki; Keiichi Koda, Lignin
  978-3-642-36199-9, 2015, 9783642361999, 2672, pp.1073-1080, English, Dictionary or encycropedia, [Contributor]
• セルロースナノファイバーの調製、分散・複合化と製品応用
  浦木康光; 游 翔宇; 幸田圭一, エレクトロスピンイング法によるセルロースナノファイバーの調製とその特性
  ㈱技術情報協会, Jan. 2015, 9784861045660, 535, 135-139, Japanese, Scholarly book, [Contributor]
• Latest Trends of the Lignin Utilization
  坂, 志朗, 第5章 リグニンの利用の現状と展望 1 リグニンを原料としたポリエステル
  シーエムシー出版, Jul. 2013, 9784781308050, v, 244p, p.145-152, Japanese, Scholarly book, [Contributor]
• Functional materials from renewable sources
  Yasumitsu Uraki; Keiichi Koda; Tatsuhiko Yamada; Chihiro Oikawa; Tomohiro Aso, Novel functions of nonionic, amphiphilic lignin derivatives
  American Chemical Society, Washington, DC, USA, 2012, 9780841227880, 361, 243-254, English, Scholarly book, [Contributor]
• Sustainable Production of Fuels, Chemicals, and Fibers from Forest Biomass
  Keiichi Koda; Satoshi Kubo; Yasumitsu Uraki, Chemicals from lignin based on thermal fusibility and amphiphilicity
  American Chemical Society, Washington, DC, USA, 2011, 9780841226432, 526, 261-277, English, Scholarly book, [Contributor]
• 森林の科学―森林生態系科学入門
  中村 太士; 小池 孝良, 【コラム】リグニンを調べる
  朝倉書店, 01 Sep. 2005, 425447038X, 218, 162, Japanese, Textbook, [Contributor]

• 樽熟成における香味成分の形成
  幸田圭一
  第７１回時計台サロン「農学部に聞いてみよう」：樽材とウイスキー～「食文化」を支える「林産業」, 18 Dec. 2024, Japanese, Public discourse
  18 Dec. 2024 - 18 Dec. 2024
• ウイスキーと、これからの林業。～お木遣い感謝いたします～
  幸田圭一
  第137回 サイエンス・カフェ札幌, 20 Sep. 2024, Japanese, Public discourse
  20 Sep. 2024 - 20 Sep. 2024, [Invited]
• Localized occurrence of lignin in some non-vascular plant species
  Keiichi Koda; Ayaka Yoneyama; Yoko Watanabe; Yutaka Tamai
  2nd International Lignin Symposium, 09 Sep. 2024, English, Poster presentation
  07 Sep. 2024 - 10 Sep. 2024
• 非維管束植物におけるリグニンの蓄積とその局在
  米山 彰香; 幸田 圭一; 渡辺 陽子; 玉井 裕
  第74回日本木材学会年次大会（京都大会）, 13 Mar. 2024, Japanese, Oral presentation
  13 Mar. 2024 - 15 Mar. 2024
• ウイスキー製造工程における香味成分の生成
  幸田圭一
  日本木材学会北海道支部 第53回研究会：北海道産木材とウイスキー, 27 Jun. 2023, Japanese, Public discourse
  27 Jun. 2023 - 27 Jun. 2023, [Invited]
• Development of Lignin-based Bioploymers for Sustainable Use of Woody Biomass
  Keiichi Koda
  The First International Conference of Lignocellulose in conjunction with The 10th International Symposium for Sustainable Humanosphere 2021 (ICON-LIG & ISSH 2021), 14 Sep. 2021, English, Invited oral presentation
  13 Sep. 2021 - 14 Sep. 2021, [Invited]
• Woody Biomass Refinery -Its Significance and Future Perspective-
  Keiichi Koda
  Asia Pacific Regional Meeting 2021 (APRM 2021), 01 Jun. 2021, English, Public discourse
  01 Jun. 2021 - 03 Jun. 2021, [Invited]
• Lignin-based flexible film as a separator for electric double-layer capacitor Preparation of lignin-based activated carbon fiber and its electrical application
  Keiichi Koda; Atsushi Kobota; Tomofumi Isozaki; Tatsuhiko Yamada; Yasumitsu Uraki
  5th ISETPP & 3rd IPEC, 07 Nov. 2016, South China University of Technology, English, Keynote oral presentation
  Guangzhou, China, [Invited], [International presentation]
• 森は自然の化学工場
  幸田圭一
  第25回時計台サロン 農学部に聞いてみよう, 22 Apr. 2015, 北海道大学農学部／農学院／農学研究院, Japanese, Public discourse
  札幌時計台2F演武場（札幌市）, [Invited], [Domestic Conference]
• Full utilization of woody biomass and its contemporary significance
  KODA, Keiichi
  北海道大学総合博物館 土曜市民セミナー, 12 Oct. 2013, 北海道大学総合博物館, Japanese, Public discourse
  北大総合博物館１F「知の交流」コーナー（札幌市）, [Invited], [Domestic Conference]
• Challenging Adventure on Lignin Chemistry
  KODA, Keiichi
  Invited Lecture at Mulawarman University, 22 Sep. 2006, Mulawarman University, English, Public discourse
  Samarinda, Indonesia, [Invited], [International presentation]
• リンのNMRによるリグニン官能基の視覚化
  幸田圭一
  セルロース学会北海道・東北支部主催講演会『木質バイオマスの化学的利用－育種から先端利用まで－』, 24 Nov. 2005, セルロース学会北海道・東北支部, Japanese, Public discourse
  北大農学部（札幌市）, [Invited], [Domestic Conference]
• ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY. Vol. 229. 1155 16TH ST, NW, WASHINGTON, DC 20036 USA: AMER CHEMICAL SOC, 2005.
  D.Argyropoulos; A. Gaspar; K. Koda
  Abstracts of Papers of the Amirian Chemical Society Vol. 229. 1155 16TH ST, NW, WASHINGTON, DC 20036 USA: AMER CHEMICAL SOC, 2005., 2005, ACS, English, Oral presentation
  San Diego, [International presentation]
• 製紙用パルプの塩素系漂白で生成する高分子有機塩素化合物の微生物分解挙動
  幸田圭一
  北海道科学技術ネットワークセッション-若手研究者研究成果発表会・交流会-, 13 Mar. 2003, 〔財〕北海道科学技術総合振興センター, Japanese, Others
  かでる2・7（札幌市）, [Invited], [Domestic Conference]
• クラフトパルプの塩素漂白過程で副生する環境有害物質の追跡
  幸田圭一
  平成12年度繊維学会北海道紙パルプ技術懇談会講演会, 09 Mar. 2001, 繊維学会北海道紙パルプ技術懇談会, Japanese, Public discourse
  北海道大学百年記念会館（札幌市）, [Invited], [Domestic Conference]

• 森林資源科学特論, 2024年, 修士課程, 農学院
• 森林資源科学特論演習, 2024年, 修士課程, 農学院
• 林産学特論Ⅰ, 2024年, 修士課程, 農学院
• 林産学特論演習Ⅰ, 2024年, 修士課程, 農学院
• 高分子学概論, 2024年, 学士課程, 農学部
• 環境化学, 2024年, 学士課程, 農学部
• 林産学実習, 2024年, 学士課程, 農学部
• 一般教育演習(ﾌﾚｯｼｭﾏﾝｾﾐﾅｰ), 2024年, 学士課程, 全学教育
• パルプ・製紙学, 2024年, 学士課程, 農学部
• 木質バイオマス変換化学, 2024年, 学士課程, 農学部
• 木質バイオマス変換学, 2024年, 学士課程, 農学部
• 林産製造学実験, 2024年, 学士課程, 農学部
• 英語演習, 2024年, 学士課程, 全学教育
• 暖温帯林施業実習, 2024年, 学士課程, 農学部

• Nov. 2018 - Present
  The Lignin Society
• Jan. 1996 - Present
  Japan Wood Research Society
• Present
  Japan Humic Substances Society
• Present
  Japan TAPPI

• 工業リグニンを用いた新規ポリエステル系樹脂の開発
  2025年度研究助成
  Apr. 2025 - Mar. 2027
  今野＆レスター財団, 北海道大学 大学院農学研究院, Principal investigator
• Investigation of lignin formed in the mimetics of wood cell wall and clarification of lignification-related compounds
  Grants-in-Aid for Scientific Research
  01 Apr. 2018 - 31 Mar. 2021
  Uraki Yasumitsu
  This study clearly demonstrated the effect of hemicelluloses on ligninfication through lignin formation in the artificial polysaccharide matrices; xylan contributed to lignin formation and generation of 8-O-4' interunitary linkage, which was a major linkage in native lignin, while glucomannan inhibited lignin formation. In addition, xyloglucan, which located only at primary wall of tree, was found to enhance the frequency of 5-5' interunitary linkage.
  From the analysis of solution structure for isolated lignins by using size-exclusion chromatograph equipped with multi-angle laser light scattering detector, 5-5' linkage was found to be closely related to the densed structure, especially much compact structure of lignin fraction with larger molar mass compared to that with small molar mass.
  Japan Society for the Promotion of Science, Grant-in-Aid for Scientific Research (A), Hokkaido University, 18H03954
• Extended analysis of interunitary linkages of lignin by improved alkaline nitrobenzene oxidation
  Grant-In-Aid for Scientific Research (C)
  Apr. 2018 - Mar. 2021
  KODA, Keiichi
  Japan Society for the Promotion of Science (JSPS), Principal investigator, Competitive research funding
• リグニンは落葉の生分解を強く規定するか？
  Grant-In-Aid for Scientific Research (C)
  Apr. 2015 - Mar. 2018
  幸田圭一
  Japan Society for the Promotion of Science (JSPS), Principal investigator, Competitive research funding
• 木材細胞壁模倣多糖類マトリックス中でのリグニンの形成とその構造決定因子の解明
  Grant-In-Aid for Scientific Research (A)
  Apr. 2014 - Mar. 2018
  Yasumitsu Uraki
  Japan Society for the Promotion of Science (JSPS), Competitive research funding
• Phylogeny and ecophysiology of fungi possessing ligninolytic activity under snow cover.
  Grants-in-Aid for Scientific Research
  01 Apr. 2013 - 31 Mar. 2016
  MIYAMOTO Toshizumi; KODA Keiichi; SHIGETOMI Kengo
  We isolated litter-decomposing fungi capable of producing active extracellular phenoloxidases at 0 °C from decomposing litter under snow cover in the forests. Molecular phylogenetic analysis and identification of extracellular enzymes of these fungi were conducted. It was revealed that the fungi involved in lignin decomposition under snow cover were consisted of various taxonomic groups inhabiting in litter of various plant species. These fungi were isolated from beginning of snow cover period to snow melting season. Lac, LiP, and MnP active at 4°C were produced from the mycelia of these fungi. A new method to determine lignin content of decomposing leaf litter was also developed. Loss of lignin in litter during the snow cover period was monitored by the new method. Lignin was lost at higher rate than previously reported.
  Japan Society for the Promotion of Science, Grant-in-Aid for Scientific Research (C), Hokkaido University, 25440198
• 公募研究課題３「木質リグニンからの材料製造技術の開発」
  委託プロジェクト研究「農山漁村におけるバイオ燃料等生産基地創造のための技術開発」（平成24年度～27年度）
  Apr. 2012 - Mar. 2016
  大原誠資
  農林水産省 農林水産技術会議, Competitive research funding
• Studies on extractives that are present in intervessel pits: characterization and its influence on water conduction
  Grant-In-Aid for Scientific Research (C)
  Apr. 2011 - Mar. 2015
  Yuzo Sano
  Recent studies have revealed that ethanol-soluble materials are present in intervessel pits in a limited angiospermous species. This study was aimed to reveal the nature of the extractive materials. The extractives were present in 3 species representing 3 families of a total of 13 species representing 11 families examined, an indication that the materials are not rare but widely appear in a variety of taxonomic groups. It was also apparent that the presence or absence is not a feature at the level of family. Histochemical examinations have revealed that the extractive materials are not polysaccharides and lipids.
  Japan Society for the Promotion of Science (JSPS), Grant-in-Aid for Scientific Research (C), Hokkaido University, Competitive research funding, 23580223
• Composition of litter-decomposing fungal community under snow cover in a cool-temperate forest and their extracellular enzyme activity
  Grant-In-Aid for Scientific Research (C)
  Apr. 2009 - Mar. 2012
  Toshizumi Miyamoto
  We investigated the decomposition of leaf litter and the composition of litter-decomposing fungal community under snow cover in some forest stands in Hokkaido, and their extracellular enzyme productivity at low temperature. It was observed that while the oak and fir foliage litter lost their original weight under snow during the winter season, some fungi appeared or increased the frequency. Some fungi isolated from oak litter were found to extend the mycelia on the media and indicated ligninolytic activity at 0℃. These results suggest that some litter-decomposing fungi, which have potential ability to degrade lignin at 0℃, significantly contribute the litter decomposition under snow cover.
  Japan Society for the Promotion of Science (JSPS), Grant-in-Aid for Scientific Research (C), Hokkaido University, Competitive research funding, 21570013
• Clarification of hemicellulose functions using artificial wood cell wall and development of its functional materials
  Grants-in-Aid for Scientific Research
  2009 - 2011
  URAKI Yasumitsu; TAMAI Yutaka; KODA Keiichi; HIRAI Takuro; SUGIYAMA Junji
  In this study, hemicellulose-adsorbed honeycomb-patterned cellulose films termed as artificail wood cell wall were developed to investigate the function of hemicelluloses in wood cell wall and to develop the cell culture for liver cells. Tensile strength and its modulus of the cellulosic films were enhanced by the adsorption of hemicelluloses, xylan and arabinogalactan (AG). Xylan adsorption and its tensile modulus were improved by microwave irradiation. We judged proposed theory for the elucidation of deformation mechanism of wood cross-scetion upon the mechanical stress from the tensile properties of honeycomb-patterned films. As a result, the theory of bending-stretching model was suitable for the elucidation, and xylan-adsorbed film showed more fitting to the theory.
  In addition, we evaluated AG-adsorbed honeycomb-patterned film as a culture substrate for mouse liver cells. The films with small pores were found to be a new type candidate substrate for the culture. On the other hand, the films with larger pores would be suggested to be a plate for cell array, but the number of attached cell was so small. For the industrial application, this problem should be overcome.
  Japan Society for the Promotion of Science, Grant-in-Aid for Scientific Research (B), Hokkaido University, 21380104
• Identification of extractives occurring in vessel perforation in hardwood
  Cooperative Research
  2011
  Competitive research funding
• 木質バイオマスの利活用を指向したリグニン単位間結合の新規切断方法の開発
  経常研究
  2005 - 2010
  幸田圭一
  Principal investigator, Competitive research funding
• Biodegradation and Environmental Fate of Lignin and Lignin-like Substances in Forest Ecosystem
  Ordinary Research
  2006
  Competitive research funding
• A Novel Procedure for Ether Cleavage of Lignin Interunit Linkages under Mild Reaction Conditions -For Complete Utilization of Woody Biomass-
  Ordinary Research
  2005
  Competitive research funding
• 製紙用パルプ漂白排水成分の生分解性ならびに環境毒性の総合的評価系の確立
  Grant-In-Aid for Scientific Research (KAKENHI)
  Apr. 2003 - 2003
  Keiiichi Koda
  (※North Carolina State Universityでの博士研究員（2003年7月～2005年5月）に内定したため、交付決定後、辞退)
  The Ministry of Education,Culture,Sports,Science and Technology (MEXT), 若手研究(B), 北海道大学, Principal investigator, Competitive research funding, 15780122
• パルプの塩素漂白で生成する高分子塩素化合物の代謝モデル系の確立
  平成13年度一般研究奨励事業 若手研究者研究奨励補助金
  Apr. 2001 - Mar. 2002
  幸田圭一
  ノーステック財団（北海道科学技術振興財団）, Principal investigator, Competitive research funding

• 組成物
  Patent right, 浦木康光; 幸田圭一; 今野晴男, 国立大学法人北海道大学;日本製紙株式会社
  特願2017-241280(P2017-241280), 18 Dec. 2017
  特開2019-108441(P2019-108441A)., 04 Jul. 2019