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Stability of aluminum-humic acid complex against microbial degradation

Research Project

Project/Area Number 26340005
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Research Field Environmental dynamic analysis
Research InstitutionYamaguchi University

Principal Investigator

Yanagi Yukiko  山口大学, 創成科学研究科, 助教 (20412819)

Project Period (FY) 2014-04-01 – 2017-03-31
Project Status Completed (Fiscal Year 2016)
Budget Amount *help
¥4,940,000 (Direct Cost: ¥3,800,000、Indirect Cost: ¥1,140,000)
Fiscal Year 2016: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2015: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2014: ¥2,470,000 (Direct Cost: ¥1,900,000、Indirect Cost: ¥570,000)
Keywords土壌有機物 / 腐植物質 / アルミニウム / 微生物 / 分解 / 炭素蓄積 / 安定性 / 腐植酸 / 生分解 / 複合体 / 黒ボク土
Outline of Final Research Achievements

In this study, we conducted research aiming directly to evaluate the stability against the microbial degradation of aluminum (Al) - humus complexes using humic acid as a major fraction of humic substances and humic acid degrading fungi.
In the decolorization test under the coexistence of inorganic substances, no influence of inorganic substances was observed. In the decolorization test using the synthetic Al-humic acid complex, no influence was observed under the dissolved condition. However, under the decolorization test by the suspension culture, the Al-humic acid complex showed a high stability significantly. Furthermore, even in the model oxidative degradation test using hydrogen peroxide, the Al - humic acid complex showed high resistance to decomposition.
Consequently, it is contributed that the improvement of the chemical stability of humic substances by complex formation with Al as a cause of the stabilization mechanism of soil organic matter.

Report

(4 results)
  • 2016 Annual Research Report   Final Research Report ( PDF )
  • 2015 Research-status Report
  • 2014 Research-status Report
  • Research Products

    (3 results)

All 2017 2016

All Journal Article (1 results) (of which Peer Reviewed: 1 results) Presentation (2 results) (of which Int'l Joint Research: 1 results)

  • [Journal Article] Fire-induced formation and biodegradation of humic substances in Andosols of Japan2016

    • Author(s)
      Y. Yanagi, S. Nishimura, H. Shindo
    • Journal Title

      Geoderma Regional

      Volume: 7 Issue: 2 Pages: 177-186

    • DOI

      10.1016/j.geodrs.2016.03.003

    • Related Report
      2015 Research-status Report
    • Peer Reviewed
  • [Presentation] 懸濁培養におけるCoriolus consorsによる合成Al-腐植酸複合体の褪色試験2017

    • Author(s)
      吉田季未・柳由貴子
    • Organizer
      日本腐植物質学会第32回講演会
    • Place of Presentation
      名城大学(愛知県名古屋市)
    • Related Report
      2016 Annual Research Report
  • [Presentation] Decolorization properties of humic acids by versatile peroxidase2016

    • Author(s)
      Yukiko YANAGI, Ryutaro HACHIYA, and Kota NAKAMURA
    • Organizer
      The 18th Meeting of the International Humic Substances Society
    • Place of Presentation
      金沢市文化ホール(石川県金沢市)
    • Year and Date
      2016-09-11
    • Related Report
      2016 Annual Research Report
    • Int'l Joint Research

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Published: 2014-04-04   Modified: 2018-03-22  

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