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Study on detoxification of inorganic arsenic by methylation using arsenic methyltransferase

Research Project

Project/Area Number 16K00589
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Research Field Environmental engineering and reduction of environmental burden
Research InstitutionUniversity of Miyazaki

Principal Investigator

MIYATAKE Munetoshi  宮崎大学, 工学部, 助教 (40315354)

Co-Investigator(Kenkyū-buntansha) 塩盛 弘一郎  宮崎大学, 工学部, 教授 (80235506)
Project Period (FY) 2016-04-01 – 2020-03-31
Project Status Completed (Fiscal Year 2019)
Budget Amount *help
¥4,810,000 (Direct Cost: ¥3,700,000、Indirect Cost: ¥1,110,000)
Fiscal Year 2018: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2017: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2016: ¥1,950,000 (Direct Cost: ¥1,500,000、Indirect Cost: ¥450,000)
Keywordsヒ素の無毒化 / 酵素の固定化 / 環境技術 / 酵素工学 / 環境負荷低減 / 無毒化 / 酵素
Outline of Final Research Achievements

This study aimed to facilitate more efficient arsenic detoxification by methylation of inorganic arsenic utilizing microbial functions. Recombinant E.coli were transformed to express arsenic methyltransferase, and the methylation of inorganic arsenic was investigated using the enzyme extracted from those strains. To ensure continuous methylation while maintaining enzyme activity, the extracted enzyme was immobilized onto microcapsules to perform methylation of inorganic arsenic. As a result, it was possible to convert inorganic arsenic into methylated organic arsenic with low toxicity.
Future studies must focus on increasing the residual enzymatic activity and thus elevating the yield of organic arsenic compounds by optimizing the preparation conditions for enzyme immobilization onto microcapsules.

Academic Significance and Societal Importance of the Research Achievements

有毒な無機ヒ素の処理方法として、早急に実用化が求められているのが無機ヒ素のメチル化による無毒化処理法である。しかし、現在まで実用化に至っていない。その理由として、無機ヒ素のメチル化効率の低さとコストの高さが挙げられる。
本研究によって、直接ヒ素メチル基転移酵素を使ってメチル化反応を行うことで、メチル化有機ヒ素への変換効率を向上させることができる。さらに、無機ヒ素のメチル化反応が高効率で連続して行えることができれば、メチル化効率やコスト面からも有用な技術であることは明らかである。この技術を無毒化プロセスへ応用することで、無機ヒ素の無毒化処理法の実用化に繋がっていく。

Report

(5 results)
  • 2019 Annual Research Report   Final Research Report ( PDF )
  • 2018 Research-status Report
  • 2017 Research-status Report
  • 2016 Research-status Report
  • Research Products

    (21 results)

All 2019 2018 2017 2016

All Journal Article (8 results) (of which Peer Reviewed: 8 results,  Open Access: 4 results) Presentation (13 results) (of which Int'l Joint Research: 8 results)

  • [Journal Article] 酸化水酸化鉄微粒子を内包したポリアクリルアミドクライオゲルによるヒ素(V)のカラム連続吸着特性2019

    • Author(s)
      市側大稀, 塩盛弘一郎, 大榮薫
    • Journal Title

      科学・技術研究

      Volume: 8 Pages: 43-50

    • NAID

      130007687551

    • Related Report
      2019 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Arsenic-methylation and arsenic-removal using Bordetella petrii strain KC422018

    • Author(s)
      Koshiro Takase, Jun Hirose, Haruhiko Yokoi, Munetoshi Miyatake
    • Journal Title

      Proc. The 5th International Arsenic Symposium in MIYAZAKI

      Volume: 1 Pages: 38-41

    • Related Report
      2018 Research-status Report
    • Peer Reviewed
  • [Journal Article] Analysis of continuous adsorption of arsenic(V) from water with polyacrylamide cryogel column containing iron hydroxide oxide nanoparticles2018

    • Author(s)
      Daiki ICHIKAWA, Koichiro SHIOMORI
    • Journal Title

      Proc. The 5th International Arsenic Symposium in MIYAZAKI

      Volume: 1 Pages: 34-35

    • Related Report
      2018 Research-status Report
    • Peer Reviewed
  • [Journal Article] Extraction of Cu(II) with microcapsules of cross-linked gel of poly(vinyl alcohol)/alginic acid encapsulating dispersed droplets of phenolic oxime extractant2018

    • Author(s)
      Akiho KUWAHATA, Nov Irmawati INDA, Koichiro SHIOMORI
    • Journal Title

      Proc. The 5th International Arsenic Symposium in MIYAZAKI

      Volume: 1 Pages: 30-33

    • Related Report
      2018 Research-status Report
    • Peer Reviewed
  • [Journal Article] A Kinetic Study of Copper(II) Extraction using LIX84-I Impregnated Polymeric Particles with Different Structures2018

    • Author(s)
      Nov Irmawati Inda, Masaya Fukumaru, Takashi Sana, Shiro Kiyoyama, Takayuki Takei, Masahiro Yoshida, Akira Nakajima, Koichiro Shiomori
    • Journal Title

      Solvent Extraction Research and Development, Japan

      Volume: 25 Issue: 1 Pages: 23-36

    • DOI

      10.15261/serdj.25.23

    • NAID

      130006733842

    • ISSN
      1341-7215, 2188-4765
    • Related Report
      2017 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Adsorptive removal of arsenic(V) from water with polyacrylamide cryogel containing iron hydroxide oxide nanoparticles2017

    • Author(s)
      Koichiro Shiomori, Daiki Ichikawa, Misa Kurozumi, Yasunori Yano, Shiro Kiyoyama, Kentaro Sakai, Ashok Kumar
    • Journal Title

      Proc. The 5th International Symposium on Aqua Science and Water Resources

      Volume: - Pages: 152-157

    • Related Report
      2017 Research-status Report
    • Peer Reviewed
  • [Journal Article] 1.Properties of arsenic-methylating and arsenic-removing bacterium Bordetella petrii strain KC422016

    • Author(s)
      M. Miyatake and S. Hayashi
    • Journal Title

      Resources Processing

      Volume: 63 (1) Pages: 12-17

    • Related Report
      2016 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] 2.Characteristics of arsenic-methylation and arsenic-removal by Bordetella petrii strain KC422016

    • Author(s)
      M. Miyatake and S. Hayashi
    • Journal Title

      Resources Processing

      Volume: 63 (1) Pages: 18-23

    • Related Report
      2016 Research-status Report
    • Peer Reviewed / Open Access
  • [Presentation] in situ可視光重合と界面縮重合の組み合わせによるα-グルコシダーゼ内包多孔質マイクロカプセルの調製と酵素活性2019

    • Author(s)
      前田倫太郎, 高瀬幸士朗, 宮武宗利, 清山史朗, 武井孝行, 吉田昌弘, 塩盛弘一郎
    • Organizer
      第56回化学関連支部合同九州大会
    • Related Report
      2019 Annual Research Report
  • [Presentation] Arsenic removal by cryogels containing arsenic-adsorptive fine particles2019

    • Author(s)
      Koichiro Shiomori, Daiki Ichikawa, Syogo Ichikawa, Solongo Enkhzaya, Shiro Kiyoyama, Kaoru Ohe
    • Organizer
      The 18th PBC Conference
    • Related Report
      2019 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Arsenic-methylation and arsenic-removal using Bordetella petrii strain KC422018

    • Author(s)
      Koshiro Takase, Jun Hirose, Haruhiko Yokoi, Munetoshi Miyatake
    • Organizer
      5th International Arsenic Symposium in Miyazaki - Environmental Impact and Health Hazards -
    • Related Report
      2018 Research-status Report
    • Int'l Joint Research
  • [Presentation] Analysis of continuous adsorption of arsenic(V) from water with polyacrylamide cryogel column containing iron hydroxide oxide nanoparticles2018

    • Author(s)
      Daiki ICHIKAWA, Koichiro SHIOMORI
    • Organizer
      5th International Arsenic Symposium in Miyazaki - Environmental Impact and Health Hazards -
    • Related Report
      2018 Research-status Report
    • Int'l Joint Research
  • [Presentation] Extraction of Cu(II) with microcapsules of cross-linked gel of poly(vinyl alcohol)/alginic acid encapsulating dispersed droplets of phenolic oxime extractant2018

    • Author(s)
      Akiho KUWAHATA, Nov Irmawati INDA, Koichiro SHIOMORI
    • Organizer
      5th International Arsenic Symposium in Miyazaki - Environmental Impact and Health Hazards -
    • Related Report
      2018 Research-status Report
    • Int'l Joint Research
  • [Presentation] Arsenic Removal Performance of Multi-GSF for Arsenic-Contaminated Groundwater in Bangladesh2018

    • Author(s)
      Yasunori Yano, Hiroshi Yokota, Kouichiro Shiomori, Shigeki Tomomatsu, Sachie Tsushima, Shamim Uddin, Md.Joynul Abedin Zaman, Miah M. Hussainuzzaman
    • Organizer
      5th International Arsenic Symposium in Miyazaki - Environmental Impact and Health Hazards -
    • Related Report
      2018 Research-status Report
    • Int'l Joint Research
  • [Presentation] 酸化水酸化鉄微粒子を内包したポリアクリルアミドクライオゲルを充填したカラムによるヒ素(V)の連続吸着特性2018

    • Author(s)
      市側 大稀, 塩盛弘一郎
    • Organizer
      化学工学会第50回秋季大会
    • Related Report
      2018 Research-status Report
  • [Presentation] LIX84-I含浸連結球状多孔質微粒子による金属イオンの抽出特性および抽出速度2018

    • Author(s)
      大串 渉,清山 史朗,武井 孝之,吉田 昌弘,塩盛 弘一郎
    • Organizer
      第20回化学工学会学生発表会(東広島大会)
    • Related Report
      2017 Research-status Report
  • [Presentation] LIX84-I内包PVA/アルギン酸架橋ゲルマイクロカプセルの調製およびCu(Ⅱ)の抽出特性2018

    • Author(s)
      桒畑 明穂,清山 史朗,武井 孝之,吉田 昌弘,塩盛 弘一郎
    • Organizer
      第20回化学工学会学生発表会(東広島大会)
    • Related Report
      2017 Research-status Report
  • [Presentation] Adsorptive removal of arsenic(V) from water with polyacrylamide cryogel containing iron hydroxide oxide nanoparticles2017

    • Author(s)
      Koichiro Shiomori, Daiki Ichikawa, Misa Kurozumi, Yasunori Yano, Shiro Kiyoyama, Kentaro Sakai, Ashok Kumar
    • Organizer
      The 5th International Symposium & Exhibition on Aqua Science and Water Resources
    • Related Report
      2017 Research-status Report
    • Int'l Joint Research
  • [Presentation] Column adsorption of As(V) with polyacrylamide cryogel containing iron hydroxide oxide nanoparticles2017

    • Author(s)
      Daiki Ichikawa, Shiro Kiyoyama, Koichiro Shiomori
    • Organizer
      The 21st International Solvent Extraction Conference
    • Related Report
      2017 Research-status Report
    • Int'l Joint Research
  • [Presentation] Utilization of Various Types of Microcapsules Containing LIX84-I for Cu(II) Extraction from Aqueous Solution2017

    • Author(s)
      Nov Irmawati Inda, Masaya Fukumaru, Shiro Kiyoyama, Koichiro Shiomori
    • Organizer
      The 21st International Solvent Extraction Conference
    • Related Report
      2017 Research-status Report
    • Int'l Joint Research
  • [Presentation] モンゴル産ゼオライトの化学修飾によるヒ素および重金属の吸着除去2017

    • Author(s)
      塩盛弘一郎,ドルゴルマー ムンフバト,バヤンジャルガル オチロホヤグ
    • Organizer
      第23回ヒ素シンポジウム
    • Related Report
      2017 Research-status Report

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Published: 2016-04-21   Modified: 2021-02-19  

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