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Balance improvement of intestinal microflora by ellagitannins

Research Project

Project/Area Number 16K08300
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Research Field Natural medicines
Research InstitutionOkayama Prefectural University

Principal Investigator

Hideyuki Ito  岡山県立大学, 保健福祉学部, 教授 (70253002)

Project Period (FY) 2016-04-01 – 2019-03-31
Project Status Completed (Fiscal Year 2018)
Budget Amount *help
¥4,810,000 (Direct Cost: ¥3,700,000、Indirect Cost: ¥1,110,000)
Fiscal Year 2018: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2017: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2016: ¥2,990,000 (Direct Cost: ¥2,300,000、Indirect Cost: ¥690,000)
Keywords腸内細菌 / ビフィズス菌 / エラジタンニン / 整腸作用 / プレバイオティクス / ポリフェノール / ゲンノショウコ / geraniin / corilagin / Bifidobacterium longum / タンニン / punicalagin / ザクロ / 腸内フローラ / ムチン / IgA
Outline of Final Research Achievements

We investigated the effect of polyphenol-rich plants on survival of beneficial intestinal bacteria (Bifidobacterium longum) to improve the intestinal microbial balance. The pomegranate aril extract showed the survival effect on B. longum. Quantitative nuclear magnetic resonance (qNMR) is a recently developed method for accurate quantification of natural compounds in extracts. The simultaneous quantification of ellagitannins and the related polyphenols of Geranium thunbergii was studied using qNMR after a short-term and long-term decoction. Our data indicated that the qNMR method can be used to perform accurate, simple, and rapid analysis of target analyte content. Furthermore, we evaluated intestinal flora balance and IgA production after administration of G. thunbergii for a short- and long-term decoction to mice compared to high fat diet. These results showed no significant improvement effect. It is necessary to extend the administration period to clarify the positive effects.

Academic Significance and Societal Importance of the Research Achievements

エラジタンニン抗含有素材のザクロアリルおよびゲンノショウコには,in vitro実験系で腸内有用菌に対する生存作用を有することを見出した。今回の実験モデルマウスを使用したin vivo実験系では,特にゲンノショウコエキスには腸内環境改善作用は見られなかったが,投与期間の延長など実験デザインを検討することにより,効果を実証できる余地があると考えており,実証できれば,経験的に用いられてきた民間薬の整腸作用解明につながると考えられる。一方,本研究により開発したqNMR法による素材中のエラジタンニンの一斉分析法は,各種生薬の品質評価にも有効な分析法で,学術的および社会的意義は高いと考えている。

Report

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

    (8 results)

All 2019 2018 2017 2016

All Journal Article (1 results) (of which Peer Reviewed: 1 results,  Open Access: 1 results) Presentation (6 results) (of which Int'l Joint Research: 1 results,  Invited: 1 results) Book (1 results)

  • [Journal Article] Simultaneous Quantification of Ellagitannins and Related Polyphenols in Geranium thunbergii Using Quantitative NMR2018

    • Author(s)
      Februadi Bastian, Yurie Ito, Erika Ogahara, Natsuki Ganeko, Tsutomu Hatano and Hideyuki Ito
    • Journal Title

      Molecules

      Volume: 23 Issue: 6 Pages: 1346-1357

    • DOI

      10.3390/molecules23061346

    • Related Report
      2018 Annual Research Report
    • Peer Reviewed / Open Access
  • [Presentation] ザクロアリルに含まれるポリフェノール成分とその抗糖化作用2018

    • Author(s)
      Bastian Februadi,我如古菜月,好村守生,天倉吉章,伊東秀之
    • Organizer
      第72回日本栄養・食糧学会大会
    • Related Report
      2018 Annual Research Report
  • [Presentation] Polyphenols From Arils of Punica granatum and Their Anti-glycation Activities2018

    • Author(s)
      Februadi Bastian, Natsuki Ganeko, Morio Yoshimura, Yoshiaki Amakura, and Hideyuki Ito
    • Organizer
      XXIX International Conference on Polyphenols and 9th Tannin Conference
    • Related Report
      2018 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Metabolites of Ellagitannins and Their Biological Activities2018

    • Author(s)
      Hideyuki Ito
    • Organizer
      The 31st Annual and International Meeting of Japanese Association for Animal Cell Technology (JAACT 2018)
    • Related Report
      2018 Annual Research Report
    • Invited
  • [Presentation] A new ellagitannin monomer from arils of Punica granatum2018

    • Author(s)
      Februadi Bastian, Natsuki Ganeko, Morio Yoshimura, Yoshiaki Amakura, and Hideyuki Ito
    • Organizer
      日本薬学会第138年会
    • Related Report
      2017 Research-status Report
  • [Presentation] nti-aging effects of ellagitannin metabolites, urolithins, on the skins2017

    • Author(s)
      Februadi Bastian, Takanori Nakajima, Masatake Kudo, Hiroaki Yamamoto, and Hideyuki Ito
    • Organizer
      The 8th International Conference on Polyphenols and Health (ICPH2017)
    • Related Report
      2017 Research-status Report
  • [Presentation] ザクロ葉に含まれる血糖値上昇抑制成分の探索研究2016

    • Author(s)
      赤井衣里阿,河辺聡子,我如古菜月,好村守生,天倉吉章,伊東秀之
    • Organizer
      日本生薬学会第63回年会
    • Place of Presentation
      富山
    • Year and Date
      2016-09-24
    • Related Report
      2016 Research-status Report
  • [Book] Special Issue Dedicated to Late Professor Takuo Okuda Tannins and Related Polyphenols Revisited: Chemistry, Biochemistry and Biological Activities2019

    • Author(s)
      Hideyuki Ito, Tsutomu Hatano and Takashi Yoshida (Eds.)
    • Total Pages
      316
    • Publisher
      MDPI books
    • ISBN
      9783038978350
    • Related Report
      2018 Annual Research Report

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Published: 2016-04-21   Modified: 2020-03-30  

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