ID | 33016 |
FullText URL | |
Author |
Komagoe, Keiko
Takeuchi, Hiroaki
Katsu, Takashi
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Abstract | 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. |
Keywords | Oxygen electrode
Oxygen consumption
Hydroxyl radical
Hydroxyl radical-scavenger
Antioxidant
Alcoholic drink
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Note | 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. |
Published Date | 2008-05-30
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Publication Title |
Sensors and Actuators B-Chemical
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Volume | volume134
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Issue | issue2
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Start Page | 516
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End Page | 520
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Content Type |
Journal Article
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language |
English
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Refereed |
True
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DOI | |
Web of Science KeyUT | |
Submission Path | analytical_chemistry/41
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