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ID 33016
フルテキストURL
著者
Komagoe, Keiko Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama University
Takeuchi, Hiroaki Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama University
Katsu, Takashi Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama University
抄録

An oxygen electrode was applied to determine hydroxyl radical ((OH)-O-center dot) levels for the first time. The method is based on the determination of (OH)-O-center dot generated by the Fenton reaction using the reaction of (OH)-O-center dot with a scavenger and the resulting radical consuming an oxygen molecule stoichiometrically. Thus, the (OH)-O-center dot-scavenging abilities of antioxidant reagents, as well as the concentration of (OH)-O-center dot, can be determined by the measurement of consumption of dissolved oxygen using an oxygen electrode. A good correlation between the present method and conventional colorimetry was obtained for the estimation of the (OH)-O-center dot-scavenging activities of antioxidants. Furthermore, the results correlated with the (OH)-O-center dot-scavenging rate constants of the reagents evaluated by a "cupric ion reducing antioxidant capacity (CUPRAC)" assay. We applied the present method to estimate the (OH)-O-center dot-scavenging abilities of commercially available alcoholic drinks.

キーワード
Oxygen electrode
Oxygen consumption
Hydroxyl radical
Hydroxyl radical-scavenger
Antioxidant
Alcoholic drink
備考
Published with permission from the copyright holder.
This is published in Sensors and Actuators B-Chemical , 2008 Vol.134 Issue.2 pp.516-520
Publisher URL: http://dx.doi.org/10.1016/j.snb.2008.05.033
Direct access to Thomson Web of Science record
(C)2008 by Elsevier B.V.
発行日
2008-05-30
出版物タイトル
Sensors and Actuators B-Chemical
134巻
2号
開始ページ
516
終了ページ
520
資料タイプ
学術雑誌論文
言語
English
査読
有り
DOI
Web of Sience KeyUT
Submission Path
analytical_chemistry/41