Determination of sulfite radical (SO 3 ⋅ − ) reaction rate constants by means of competition kinetics
作者： M. Erben-Russ , Christa Michel , W. Bors , M. Saran
DOI: 10.1007/BF01221974
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摘要: The sulfite radical anion (SO 3 ⋅ −) was found to react rapidly with the flavonoid quercetin (k = 2.5 × 108 dm3mol−1 s−1) and carotenoids crocin 1.0 109 s1−) crocetin 1.5 dm3mol1− s1−). reactions can easily be monitored due strong absorptions of substrates and, in case quercetin, formation a strongly absorbing transient species. Using these substances, we determined by means competition kinetics rate constants SO − nucleic acid components, polyunsaturated fatty acids, glutathione.
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