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
相关论文
共 50 条
  • [1] Electron paramagnetic resonance spectroscopy for analysis of free radicals inzebrafish
    Sabetghadam Moghadam, Mitra
    Wiens, Eli
    Gauvrit, Sebastien
    Sammynaiken, Ramaswami
    Collins, Michelle M.
    PLOS ONE, 2025, 20 (02):
  • [2] Characterization of free radicals in soluble coffee by electron paramagnetic resonance spectroscopy
    Pascual, EC
    Goodman, BA
    Yeretzian, C
    JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY, 2002, 50 (21) : 6114 - 6122
  • [3] Electron paramagnetic resonance (EPR) study of free radicals in irradiated zinc poly methacrylate
    Galindo, S.
    Urena-Nunez, F.
    RADIATION PHYSICS AND CHEMISTRY, 2015, 111 : 67 - 73
  • [4] Characterization of radicals in polysorbate 80 using electron paramagnetic resonance (EPR) spectroscopy and spin trapping
    Mittag, Judith J.
    Trutschel, Marie-Luise
    Kruschwitz, Helen
    Mader, Karsten
    Buske, Julia
    Garidel, Patrick
    INTERNATIONAL JOURNAL OF PHARMACEUTICS-X, 2022, 4
  • [5] Biomedical applications of electron paramagnetic resonance (EPR) spectroscopy
    Klare, Johann P.
    BIOMEDICAL SPECTROSCOPY AND IMAGING, 2012, 1 (02) : 101 - 124
  • [6] SNARE-interactions in solution and in proteoliposomes studied by fluorescence spectroscopy and electron paramagnetic resonance (EPR)
    Margittai, M
    Langen, R
    Jahn, R
    MOLECULAR BIOLOGY OF THE CELL, 1999, 10 : 209A - 209A
  • [7] ELECTRON RESONANCE SPECTROSCOPY OF FREE RADICALS
    WHIFFEN, DH
    QUARTERLY REVIEWS, 1958, 12 (03): : 250 - 264
  • [8] The Reactivity of Free Radicals in Biomass Char Studied by EPR Spectroscopy
    Gao, Xiuzhi
    Feng, Jiwen
    MINI-REVIEWS IN ORGANIC CHEMISTRY, 2011, 8 (04) : 438 - 447
  • [9] Electron Paramagnetic Resonance Imaging and Spectroscopy of Polydopamine Radicals
    Mrowczynski, Radoslaw
    Coy, L. Emerson
    Scheibe, Blazej
    Czechowski, Tomasz
    Augustyniak-Jablokow, Maria
    Jurga, Stefan
    Tadyszak, Krzysztof
    JOURNAL OF PHYSICAL CHEMISTRY B, 2015, 119 (32): : 10341 - 10347
  • [10] The Fate of Free Radicals in a Cellulose Based Hydrogel: Detection by Electron Paramagnetic Resonance Spectroscopy
    Basumallick, Lipika
    Ji, J. Andrea
    Naber, Nariman
    Wang, Y. John
    JOURNAL OF PHARMACEUTICAL SCIENCES, 2009, 98 (07) : 2464 - 2471
12345