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Synthesis of functional enzyme cocktail for biofuel production

Research Project

Project/Area Number 17K19089
Research Category

Grant-in-Aid for Challenging Research (Exploratory)

Allocation TypeMulti-year Fund
Research Field Nuclear engineering, Earth resources engineering, Energy engineering, and related fields
Research InstitutionThe University of Tokushima

Principal Investigator

ASADA Chikako  徳島大学, 大学院社会産業理工学研究部(生物資源産業学域), 准教授 (10580954)

Project Period (FY) 2017-06-30 – 2020-03-31
Project Status Completed (Fiscal Year 2019)
Budget Amount *help
¥6,370,000 (Direct Cost: ¥4,900,000、Indirect Cost: ¥1,470,000)
Fiscal Year 2018: ¥2,600,000 (Direct Cost: ¥2,000,000、Indirect Cost: ¥600,000)
Fiscal Year 2017: ¥3,770,000 (Direct Cost: ¥2,900,000、Indirect Cost: ¥870,000)
Keywords耐熱性セルラーゼ / 耐熱性酵素 / バイオフューエル / バイオマス / 再生可能エネルギー
Outline of Final Research Achievements

In the production of biofuel (bioethanol, biomethane, etc.) from cellulose, the most important key is to increase the efficiency of cellulose hydrolysis, i.e. saccharification of cellulose into glucose. In this study, we investigated the production and utilization process (selection of optimum new enzyme species, determination of cocktail ratio, formulation) of hydrolase (cellulase) group having ideal characteristics that cannot be produced by the present method. A cellulase-expressing gene derived from a superthermostable Archaea bacterium was synthesized and incorporated into E.coli, which has a fast growth rate, to easily obtain the enzyme. Next, the maximum enzyme reaction rate and the Michaelis-Menten constant of the equation were estimated.

Academic Significance and Societal Importance of the Research Achievements

近年,石油などの枯渇性エネルギーに代替しうる再生可能エネルギーとしてバイオ燃料が注目されている。リグノセルロース系バイオマスからのバイオ燃料生産においては,セルロースの酵素糖化の効率を上げることが最も重要な鍵である。従来の酵素糖化では糸状菌由来の酵素が使われてきたが,糸状菌の生育速度が遅いこと,る非常に低いこと,酵素の精製に時間と費用がかかることなどが問題となっています。これらの問題を改善して酵素糖化を迅速かつ効率よく行うために,超好熱性古細菌由来の耐熱性酵素を世代時間の短い大腸菌により大量発現させることに着目した。その利用により酵素糖化時間の短縮やコスト削減が可能となる。

Report

(4 results)
  • 2019 Annual Research Report   Final Research Report ( PDF )
  • 2018 Research-status Report
  • 2017 Research-status Report
  • Research Products

    (14 results)

All 2020 2019 2018 2017

All Journal Article (4 results) (of which Peer Reviewed: 4 results,  Open Access: 1 results) Presentation (9 results) (of which Int'l Joint Research: 2 results,  Invited: 3 results) Book (1 results)

  • [Journal Article] Production of cellulose nanofibers from Aspen and Bode chopsticks using a high temperature and high pressure steam treatment combined with milling2018

    • Author(s)
      A. Suzuki, C. Sasaki, C. Asada, Y. Nakamura
    • Journal Title

      Carbohydrate Polymers

      Volume: - Pages: 303-310

    • DOI

      10.1016/j.carbpol.2018.04.047

    • Related Report
      2018 Research-status Report
    • Peer Reviewed
  • [Journal Article] Cellulose-binding activity of a 21-kDa endo-?-1,4-glucanase lacking cellulose-binding domain and its synergy with other cellulases in the digestive fluid of Aplysia kurodai2018

    • Author(s)
      Tsuji Akihiko、Yuasa Keizo、Asada Chikako
    • Journal Title

      PLOS ONE

      Volume: 13 Issue: 11 Pages: e0205915-e0205915

    • DOI

      10.1371/journal.pone.0205915

    • Related Report
      2018 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Total Biorefinery Process of Lignocellulosic Waste Using Steam Explosion Followed by Water and Acetone Extractions2018

    • Author(s)
      Asada C.、Sasaki C.、Suzuki A.、Nakamura Y.
    • Journal Title

      Waste and Biomass Valorization

      Volume: 印刷中 Issue: 12 Pages: 2423-2432

    • DOI

      10.1007/s12649-017-0157-x

    • Related Report
      2018 Research-status Report
    • Peer Reviewed
  • [Journal Article] High concentration ethanol production from mixed softwood sawdust waste2018

    • Author(s)
      Chikako Asada, Chizuru Sasaki, Yoshitoshi Nakamura
    • Journal Title

      Waste and Biomass Valorization

      Volume: 印刷中 Issue: 2 Pages: 433-439

    • DOI

      10.1007/s12649-017-0073-0

    • Related Report
      2017 Research-status Report
    • Peer Reviewed
  • [Presentation] 耐熱性セルラーゼを用いたバイオマスの最適糖化条件の検討2019

    • Author(s)
      高田弥生, 淺田元子, 中村嘉利
    • Organizer
      日本農芸化学会2019年度西日本・中四国支部合同大会
    • Related Report
      2019 Annual Research Report
  • [Presentation] Renewable Resource-Based Material Synthesized from Lignocellulosic Biomass2018

    • Author(s)
      C. Asada, C. Sasaki, Y. Nakamura
    • Organizer
      12th World Congress on Biofuels and Bioenergy & 13th Global Summit and Expo on Biomass and Bioenergy, Zurich
    • Related Report
      2018 Research-status Report
    • Int'l Joint Research
  • [Presentation] 環境低負荷プロセスによる木質バイオマスからのバイオフューエルとバイオマテリアルの製造2018

    • Author(s)
      淺田元子
    • Organizer
      日本薬剤学会第1回超分子薬剤学FGシンポジウム(熊本大学)
    • Related Report
      2018 Research-status Report
    • Invited
  • [Presentation] バイオマスへの応用を考慮した耐熱性セルラーゼ利用のための酵素カクテルの相乗効果検討2017

    • Author(s)
      髙田弥生、淺田元子、佐々木千鶴、中村嘉利
    • Organizer
      第9回日本醸造学会 若手シンポジウム, 東京
    • Related Report
      2017 Research-status Report
  • [Presentation] ファルカタを原料としたバイオエタノール製造のための水蒸気爆砕前処理の最適条件の検討2017

    • Author(s)
      妹尾政都、浅田元子、佐々木千鶴、中村嘉利
    • Organizer
      第9回日本醸造学会 若手シンポジウム, 東京
    • Related Report
      2017 Research-status Report
  • [Presentation] バイオエタノール残渣となるモデルリグニンを用いたエポキシ樹脂合成の抽出溶媒検討2017

    • Author(s)
      藤井萌、浅田元子、佐々木千鶴、中村嘉利
    • Organizer
      第9回日本醸造学会 若手シンポジウム, 東京
    • Related Report
      2017 Research-status Report
  • [Presentation] 木材構成成分の分離回収と有効利用2017

    • Author(s)
      淺田元子
    • Organizer
      化学工学会第82年会(芝浦工業大学豊洲キャンパス)
    • Related Report
      2017 Research-status Report
    • Invited
  • [Presentation] 徳島県産間伐材を有効利用するための総合プロセス開発2017

    • Author(s)
      淺田元子
    • Organizer
      日本生物工学会生物資源を活用した地域創生研究部会シンポジウム(大阪大学吹田キャンパス)
    • Related Report
      2017 Research-status Report
    • Invited
  • [Presentation] Comparison of steam explosion and steaming followed by milling treatment for bioethanol production from woody biomass2017

    • Author(s)
      Yuta Danura, Chikako Asada, Chizuru Sasaki, Yoshitoshi Nakamura
    • Organizer
      13th International Conference on Ecomaterials
    • Related Report
      2017 Research-status Report
    • Int'l Joint Research
  • [Book] 石油資源【3】耐熱性セルラーゼの効率的生産とバイオ燃料生産への応用, 枯渇資源と技術開発(編集 杉山 茂)2020

    • Author(s)
      淺田元子
    • Total Pages
      4
    • Publisher
      国立大学法人徳島大学産業院出版部
    • Related Report
      2019 Annual Research Report

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Published: 2017-07-21   Modified: 2021-02-19  

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