• Search Research Projects
  • Search Researchers
  • How to Use
  1. Back to previous page

Kinetics and Spin-Dynamics in Quenching Reactive Oxygen Species with Natural Antioxidants in Dispersion / Emulsion Systems

Research Project

Project/Area Number 19550019
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeSingle-year Grants
Section一般
Research Field Physical chemistry
Research InstitutionEhime University

Principal Investigator

OHARA Keishi  Ehime University, 大学院理工学研究科, 准教授 (10284390)

Project Period (FY) 2007 – 2008
Project Status Completed (Fiscal Year 2008)
Budget Amount *help
¥4,420,000 (Direct Cost: ¥3,400,000、Indirect Cost: ¥1,020,000)
Fiscal Year 2008: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2007: ¥3,250,000 (Direct Cost: ¥2,500,000、Indirect Cost: ¥750,000)
Keywords化学反応 / 懸濁系 / 抗酸化 / 活性酸素 / 一重項酸素 / 近赤外発光 / スーパーオキシド / 過渡吸収 / 生体分子
Research Abstract

飲料・食品・化粧品・医薬品などで注目されている分散・懸濁系での天然抗酸化剤による活性酸素種消去ダイナミクスの詳細を明らかにするため、油水分散エマルジョン, 水油分散の逆ミセル系の油水界面で起こる抗酸化反応を過渡吸収法及び一重項酸素(1O_2)近赤外発光寿命法などの時間分解計測を用いて研究した。スーパーオキシドラジカルや1O_2 が天然抗酸化剤により油水界面近傍で消去されるダイナミクスを直接観測することに成功し、反応速度定数が求められた。

Report

(3 results)
  • 2008 Annual Research Report   Final Research Report ( PDF )
  • 2007 Annual Research Report
  • Research Products

    (30 results)

All 2009 2008 2007

All Journal Article (11 results) (of which Peer Reviewed: 11 results) Presentation (19 results)

  • [Journal Article] Formation and Decay Dynamics of Vitamin E Radical in the Antioxidant Reaction of Vitamin E2009

    • Author(s)
      Kazuo Mukai, Aya Ouchi, Akiko Mitarai, Keishi Ohara, Chihiro Matsuoka
    • Journal Title

      Bulletin of the Chemical Society of Japan 82

      Pages: 494-503

    • NAID

      10025117398

    • Related Report
      2008 Final Research Report
    • Peer Reviewed
  • [Journal Article] Kinetic Study of Singlet-Oxygen Quenching by Caffeic Acid and Related Phenols2009

    • Author(s)
      Keishi Ohara, Yoko Ichimura, Shin-ichi Nagaoka
    • Journal Title

      Bulletin of the Chemical Society of Japan 82(in print)

    • NAID

      10025118439

    • Related Report
      2008 Final Research Report
    • Peer Reviewed
  • [Journal Article] Tunneling Effect in Antioxidant Reaction of Flavonoid2009

    • Author(s)
      Takuhiro Kakiuchi, Kazuo Mukai, Keishi Ohara, Shin-ichi Nagaoka
    • Journal Title

      Bulletin of the Chemical Society of Japan 82

      Pages: 216-218

    • NAID

      10025115846

    • Related Report
      2008 Annual Research Report 2008 Final Research Report
    • Peer Reviewed
  • [Journal Article] Kinetic Study of Singlet -Oxygen Quenching by Caffeic Acid and Related Phenols2009

    • Author(s)
      Keishi Ohara, Yoko Ichimura, Shin-ichi Nagaoka
    • Journal Title

      Bulletin of the Chemical Society of Japan 82(in print)

    • NAID

      10025118439

    • Related Report
      2008 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Comparison between the free-radical-scavenging activities with vitamin E and ubiquinol in biological systems based on their reaction rates : A researchaccount2008

    • Author(s)
      Kazuo Mukai, Aiko Tokunaga, Shingo Itoh, Yu Kanesaki, Aya Ouchi, Keishi Ohara, Shin-ichi Nagaoka, and Kouichi Abe
    • Journal Title

      Biofactors 32

      Pages: 49-58

    • Related Report
      2008 Final Research Report
    • Peer Reviewed
  • [Journal Article] Time-Resolved EPR Investigation on the Photoreactions of Vitamin K with Antioxidant Vitamins in Micelle Systems2008

    • Author(s)
      Keishi Ohara, Yoshimi Hashimoto, Chiaki Hamada, Shin-ichi Nagaoka
    • Journal Title

      Journal of Photochemistry and Photobiology A : Chemistry 200

      Pages: 239-245

    • Related Report
      2008 Annual Research Report 2008 Final Research Report
    • Peer Reviewed
  • [Journal Article] Behavior of Singlet Oxygen in Vitamin E Emulsion2008

    • Author(s)
      Keishi Ohara, Takashi Origuchi, Kanako Kawanishi, Shin-ichi Nagaoka
    • Journal Title

      Bulletin of the Chemical Society of Japan 81

      Pages: 345-347

    • NAID

      10021074227

    • Related Report
      2008 Final Research Report
    • Peer Reviewed
  • [Journal Article] Comparison between the Free-Radical-Scavenging Activities with Vitamin E and Ubiquinol in Biological Systems Based on their Reaction Rates2008

    • Author(s)
      Kazuo Mukai, Aya Ouchi, Keishi Ohara, Shin-ichi Nagaoka, 他
    • Journal Title

      BioFactors 32

      Pages: 49-58

    • Related Report
      2008 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Behavior of Singlet Oxygen in Vitamin E Emulsion2008

    • Author(s)
      Keishi Ohara, T. Origuchi, 他
    • Journal Title

      Bulletin of the Chemical Society of Japan 81

      Pages: 345-347

    • NAID

      10021074227

    • Related Report
      2007 Annual Research Report
    • Peer Reviewed
  • [Journal Article] UV Protection and Singlet Oxygen Quenching Activity of Aloesaponarin I2007

    • Author(s)
      Shin-ichi Nagaoka, Akiko Fujii, Megumi Hino, Mai Takemoto, Misaki Yasuda, Mariko Mishima, Keishi Ohara, Akane Masumoto, Hidemitsu Uno, Umpei Nagashima
    • Journal Title

      The Journal of Physical Chemistry B 111

      Pages: 13116-13123

    • NAID

      110007338063

    • Related Report
      2008 Final Research Report
    • Peer Reviewed
  • [Journal Article] UV Protection and Singlet Oxygen Quenching Activity of Aloesaponarin I2007

    • Author(s)
      S. Nagaoka, K. Ohara, 他
    • Journal Title

      The Journal of Physical Chemistry B 111

      Pages: 13116-13123

    • NAID

      110007338063

    • Related Report
      2007 Annual Research Report
    • Peer Reviewed
  • [Presentation] ビタミンE エマルジョンにおける一重項酸素発光寿命の油滴サイズ依存性2009

    • Author(s)
      折口孝, 小原敬士, 長岡伸一
    • Organizer
      日本化学会第89 春季年会
    • Place of Presentation
      船橋
    • Year and Date
      2009-03-30
    • Related Report
      2008 Final Research Report
  • [Presentation] ビタミンEエマルジョンにおける一重項酸素発光寿命の油滴サイズ依存性2009

    • Author(s)
      折口孝, 小原敬士, 長岡伸一
    • Organizer
      日本化学会第89春季年会
    • Place of Presentation
      船橋
    • Year and Date
      2009-03-30
    • Related Report
      2008 Annual Research Report
  • [Presentation] AOT 逆ミセル中のビタミンE 光分解系でのビタミンC の抗酸化挙動2009

    • Author(s)
      池田明広, 小原敬士, 長岡伸一
    • Organizer
      日本化学会第89 春季年会
    • Place of Presentation
      船橋
    • Year and Date
      2009-03-27
    • Related Report
      2008 Final Research Report
  • [Presentation] AOT逆ミセル中のビタミンE光分解系でのビタミンCの抗酸化挙動2009

    • Author(s)
      池田明広, 小原敬士, 長岡伸一
    • Organizer
      日本化学会第89春季年会
    • Place of Presentation
      船橋
    • Year and Date
      2009-03-27
    • Related Report
      2008 Annual Research Report
  • [Presentation] ビタミンE の不均一系での抗酸化反応の速度論的研究2008

    • Author(s)
      吉本摩耶, 小原敬士, 長岡伸一
    • Organizer
      日本化学会第88 春季年会
    • Place of Presentation
      京都
    • Year and Date
      2008-03-29
    • Related Report
      2008 Final Research Report
  • [Presentation] ビタミンEの不均一系での抗酸化反応の速度論的研究2008

    • Author(s)
      吉本 摩耶, 小原 敬士, 長岡 伸一
    • Organizer
      日本化学会第88春季年会
    • Place of Presentation
      東京
    • Year and Date
      2008-03-29
    • Related Report
      2007 Annual Research Report
  • [Presentation] ビタミンE を含むミセル系における一重項酸素発光寿命2008

    • Author(s)
      折口孝, 菊地香織里, 小原敬士, 長岡伸一
    • Organizer
      日本化学会第88 春季年会
    • Place of Presentation
      京都
    • Year and Date
      2008-03-28
    • Related Report
      2008 Final Research Report
  • [Presentation] ビタミンEを含むミセル系における一重項酸素発光寿命2008

    • Author(s)
      折 口孝, 菊地 香緒里, 小原 敬士, 他
    • Organizer
      日本化学会第88春季年会
    • Place of Presentation
      東京
    • Year and Date
      2008-03-28
    • Related Report
      2007 Annual Research Report
  • [Presentation] アロエサポナリンI の紫外線防御と一重項酸素消去の機能2008

    • Author(s)
      長岡伸一, 藤井亜紀子, 日野めぐみ, 竹本真唯, 保田三沙貴, 三島麻里子, 小原敬士, 桝本茜, 宇野英満, 長嶋雲兵
    • Organizer
      第61 回日本酸化ストレス学会学術集会
    • Place of Presentation
      京都
    • Related Report
      2008 Final Research Report
  • [Presentation] アロエサポナジンIの紫外線防御と一重項酸素消去の機能2008

    • Author(s)
      長岡伸一, 保田三沙貴, 三島麻里子, 小原敬士, 他
    • Organizer
      第61回日本酸化ストレス学会学術集会
    • Place of Presentation
      京都
    • Related Report
      2008 Annual Research Report
  • [Presentation] Comparison between the Free-Radical-Scavenging Activities with Vitamin E and Ubiquinol in Biological Systems Based on the Reaction Rates2007

    • Author(s)
      K. Mukai, A. Tokunaga, S. Itoh, Y. Kanesaki, K. Ohara, S. Nagaoka, K. Abe
    • Organizer
      5TH CONFERENCE OF THE INTERNATIONAL COENZYME Q10 ASSOCIATION
    • Place of Presentation
      神戸
    • Related Report
      2008 Final Research Report
  • [Presentation] Photoinitiated Radical Reaction in the Vitamin E Emulsion2007

    • Author(s)
      K. Ohara, A. Shimizu, Y. Wada, S. Nagaoka
    • Organizer
      電子スピンサイエンス国際会議-第46 回電子スピンサイエンス学会年会合同討論会(ISESS-SEST2007)
    • Place of Presentation
      静岡
    • Related Report
      2008 Final Research Report
  • [Presentation] 不均一系におけるビタミンE の光化学反応の研究2007

    • Author(s)
      清水 亜由美, 和田 有紀, 小原敬士, 長岡伸一
    • Organizer
      第1 回分子科学討論会
    • Place of Presentation
      仙台
    • Related Report
      2008 Final Research Report
  • [Presentation] Vitamin E Emulsion 系での一重項酸素寿命2007

    • Author(s)
      折口孝, 小原敬士, 長岡伸一
    • Organizer
      第29 回日本フリーラジカル学会/日本過酸化脂質・フリーラジカル学会第31 回大会 合同学会
    • Place of Presentation
      名古屋
    • Related Report
      2008 Final Research Report
  • [Presentation] α-Tocopherol 懸濁系での抗酸化反応の速度2007

    • Author(s)
      吉本摩耶, 小原敬士, 長岡伸一
    • Organizer
      第29 回日本フリーラジカル学会/日本過酸化脂質・フリーラジカル学会第31 回大会 合同学会
    • Place of Presentation
      名古屋
    • Related Report
      2008 Final Research Report
  • [Presentation] a-Tocopherol懸濁系での抗酸化反応の速度2007

    • Author(s)
      吉本 摩耶, 小原 敬士, 長岡 伸一
    • Organizer
      第29回日本フリーラジカル学会学術集会
    • Place of Presentation
      名古屋
    • Related Report
      2007 Annual Research Report
  • [Presentation] Vitamin E Emulsion系での一重項酸素寿命2007

    • Author(s)
      折 口孝, 小原 敬士, 長岡 伸一
    • Organizer
      第29回日本フリーラジカル学会学術集会
    • Place of Presentation
      名古屋
    • Related Report
      2007 Annual Research Report
  • [Presentation] 不均一系におけるビタミンEの光化学反応の研究2007

    • Author(s)
      清水 亜由美, 小原 敬士, 他
    • Organizer
      第1回分子科学討論会
    • Place of Presentation
      仙台
    • Related Report
      2007 Annual Research Report
  • [Presentation] Photoinitiated Radical Reaction in the Vitamin E Emulsion2007

    • Author(s)
      K.Ohara, A.Shimizu, 他
    • Organizer
      電子スピンサイエンス国際会議-第46回電子スピンサイエンス学会年会合同討論会(ISESS-SEST2007)
    • Place of Presentation
      静岡
    • Related Report
      2007 Annual Research Report

URL: 

Published: 2007-04-01   Modified: 2016-04-21  

Information User Guide FAQ News Terms of Use Attribution of KAKENHI

Powered by NII kakenhi