Application of a Flow-injection Spin-trapping ESR Method for Evaluating the Alkoxy Radical Elimination Capacity (AREC) of Selected Antioxidants

Akira Nakajima; Tomoyuki Yamashita; Tomoko Yamaguchi; Kiyoshi Kawai; Yusuke Miyake; Kenji Kanaori; Kunihiko Tajima

doi:10.1246/cl.150121

This article has now been updated. Please use the final version.

Application of a Flow-injection Spin-trapping ESR Method for Evaluating the Alkoxy Radical Elimination Capacity (AREC) of Selected Antioxidants

Akira Nakajima, Tomoyuki Yamashita, Tomoko Yamaguchi, Kiyoshi Kawai, Yusuke Miyake, Kenji Kanaori, Kunihiko Tajima

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JOURNAL RESTRICTED ACCESS Advance online publication

Article ID: 150121

DOI https://doi.org/10.1246/cl.150121

The final version of this article is now available: Vol. 44 (2015), No. 6 pp. 752-754

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Abstract

A flow-injection spin-trapping ESR system using DMPO (5,5-dimethyl-1-pyrroline N-oxide) was developed for quantitative detection of the alkoxy radicals (•OR, R = C(CH₃)₂-C(⁺NH₂Cl⁻)NH₂) formed by thermal decomposition of AAPH (2,2'-azobis(2,4-amidino-propane dihydrochloride). This system was applied to estimate the alkoxy radical elimination capacity of selected antioxidants by using Trolox (6-hydroxy- 2,5,7,8-tetramethylchroman-2-carboxylic acid), as a standard.

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