Kaempferol-derived free radicals studied by electron paramagnetic resonance (EPR) spectroscopy

被引：0
|
作者：
Pirker, KF [1 ]
Stolze, K [1 ]
Reichenauer, TG [1 ]
Nohl, H [1 ]
Goodman, BA [1 ]
机构：
[1] ARC Seibersdorf Res GmbH, Dept Environm Res, Seibersdorf, Austria
来源：
Natural Antioxidants and Micronutrients | 2005年
关键词：
D O I：
暂无
中图分类号：
Q5 [生物化学]; Q7 [分子生物学];
学科分类号：
071010 ; 081704 ;
摘要：
The flavonoid molecule is degraded rapidly by O-2 in alkaline solutions, yielding the p-semiquinone radical. Subsequent radicals are based on reactions of p-semiquinone and probably have structures with 2 or more aromatic rings. Although the flavonoid structure remains intact in radicals formed by oxidation with HRP/H2O2 or OH at pH7, their structures are probably dimers. Oxidation with O-2 - at pH 7, however, yields p-semiquinone-derived radicals.
引用
收藏
页码：145 / 148
页数：4
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