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Analysis of the characteristics of biofilm polymers by electroosmotic liquid flow

Research Project

Project/Area Number 15K12232
Research Category

Grant-in-Aid for Challenging Exploratory Research

Allocation TypeMulti-year Fund
Research Field Environmental engineering and reduction of environmental burden
Research InstitutionRitsumeikan University

Principal Investigator

Morisaki Hisao  立命館大学, 生命科学部, 教授 (50125671)

Co-Investigator(Kenkyū-buntansha) 土屋 雄揮  日本大学, 生物資源科学部, 助教 (10636806)
江田 志磨  立命館大学, 生命科学部, 助教 (50420005)
Project Period (FY) 2015-04-01 – 2018-03-31
Project Status Completed (Fiscal Year 2017)
Budget Amount *help
¥3,770,000 (Direct Cost: ¥2,900,000、Indirect Cost: ¥870,000)
Fiscal Year 2017: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2016: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2015: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
Keywords電気浸透流 / バイオフィルム / ゼータ電位 / 電気泳動 / イオン強度 / 電機浸透流
Outline of Final Research Achievements

Biofilms are formed on a solid surface contacting with water over a wide range of environments. Biofilm contains polymers carrying electric charges. Hence the polymers interact electrostatically with various substances in the surrounding water, giving the biofilm specific functions. This study aimed to develop a system combining instrument and method for the analysis of the electric charges of biofilm polymers by using electroosmotic liquid flow. The following results are obtained; 1) an instrument enabling to measure the electroosmotic liquid flow precisely and easily was developed; 2) an experimental method to convert the velocity of electroosmotic liquid flow to zeta potential was confirmed; 3) a difference in the extent of electric charges was found between biofilm polymers formed under terrestrial and sea water; and 4) samples heavier than water, which cannot be measured by the conventional electrophoretic method, can be analyzed by the system developed in this study.

Report

(4 results)
  • 2017 Annual Research Report   Final Research Report ( PDF )
  • 2016 Research-status Report
  • 2015 Research-status Report

Research Products

(8 results)

All 2017 2016 2015

All Journal Article (2 results) (of which Peer Reviewed: 2 results,  Acknowledgement Compliant: 1 results) Presentation (6 results)

  • [Journal Article] Analysis of dissolved organic nutrients in the interstitial water of natural biofilms2016

    • Author(s)
      Yuki Tsuchiya, Shima Eda, Chiho Kiriyama, Tomoya Asada, and Hisao Morisaki
    • Journal Title

      Microbial Ecology

      Volume: 72 Pages: 85-95

    • DOI

      10.1007/s00248-016-0749-1

    • Related Report
      2016 Research-status Report
    • Peer Reviewed / Acknowledgement Compliant
  • [Journal Article] Characterization of the internal ion environment of biofilms based on charge density and shape of ion.2015

    • Author(s)
      Andi Kurniawan, Yuki Tsuchiya, Shima Eda, Hisao Morisaki.
    • Journal Title

      Colloids and Surfaces (B): Biointerfaces.

      Volume: 136 Pages: 22-26

    • DOI

      10.1016/j.colsurfb.2015.08.047

    • Related Report
      2015 Research-status Report
    • Peer Reviewed
  • [Presentation] 光によるバイオフィルム内の環境変化 -微生物の増殖と糖の動態に着目して-2017

    • Author(s)
      土屋雄揮, 浅田智也, 廣田絵理奈, 中尾春香, 森崎久雄
    • Organizer
      環境微生物系学会合同大会2017
    • Related Report
      2017 Annual Research Report
  • [Presentation] 抗菌材表面に形成されるバイオフィルム ―初期の性状変動―2016

    • Author(s)
      安田怜子、大和優作、土屋雄揮、江田志磨、森崎久雄
    • Organizer
      日本微生物生態学会
    • Place of Presentation
      横須賀市文化会館(神奈川県横須賀市)
    • Year and Date
      2016-10-22
    • Related Report
      2016 Research-status Report
  • [Presentation] バイオフィルム間隙水中での微生物の増殖2016

    • Author(s)
      浅田智也、中尾春香、土屋雄揮、江田志磨、森崎久雄
    • Organizer
      日本微生物生態学会
    • Place of Presentation
      横須賀市文化会館(神奈川県横須賀市)
    • Year and Date
      2016-10-22
    • Related Report
      2016 Research-status Report
  • [Presentation] バイオフィルム間隙水中の有機物は微生物の栄養基質となりうるか?2015

    • Author(s)
      浅田智也、土屋雄揮、江田志磨、森崎久雄
    • Organizer
      第30回日本微生物生態学会
    • Place of Presentation
      土浦亀城プラザ(茨城県土浦市)
    • Year and Date
      2015-10-18
    • Related Report
      2015 Research-status Report
  • [Presentation] 抗菌材表面に形成されたバイオフィルム内の細菌群集構造解析2015

    • Author(s)
      花田芽衣、安田怜子、土屋雄揮、江田志磨、森崎久雄
    • Organizer
      第30回日本微生物生態学会
    • Place of Presentation
      土浦亀城プラザ(茨城県土浦市)
    • Year and Date
      2015-10-17
    • Related Report
      2015 Research-status Report
  • [Presentation] バイオフィルム形成に抗菌材が与える影響の解析2015

    • Author(s)
      安田怜子、土屋雄揮、江田志磨、森崎久雄
    • Organizer
      第30回日本微生物生態学会
    • Place of Presentation
      土浦亀城プラザ(茨城県土浦市)
    • Year and Date
      2015-10-17
    • Related Report
      2015 Research-status Report

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Published: 2015-04-16   Modified: 2019-03-29  

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