EPR Spectroscopy of Phenolic Plant Antioxidants

  • Wolf Bors
  • Christa Michel
  • Kurt Stettmaier
Part of the NATO ASI Series book series (NSSA, volume 296)


Plant phenols are mostly secondary metabolites comprising such diverse structures as phenolic acids, e.g., of hydroxycinnamic acid (Pratt, 1993; Foti, Piattelli, Barratta, and Ruberto, 1996) or carnosic acid and its derivates in Rosmarinus officinalis (Ho, Ferraro, Chen, Rosen, and Huang, 1994), aromatic lactones such as hydroxycoumarins (Dixon, Moghimi, and Murphy, 1975; Foti et al., 1996; Hoult, Moroney, and Paya, 1994) or isoquinolines (Hewgill and Pass, 1985a), hydroxy-anthraquinones (Malterud, Farbrot, Huse, and Sund, 1993; Mian, Fratta, Rainaldi, Simi, Mariani, Benetti, and Gervasi, 1991), xanthones (Ashida, Noguchi, and Suzuki, 1994; Minami, Kinoshita, Fukuyama, Kodama, Yoshizawa, Sugiura, Nakagawa, and Tago, 1994), the large group of flavonoids (Bors, Heller, Michel, and Stettmaier, 1995), and the rather unusual macrocyclic bis-biphenyls (e.g. marchantins) from liverwort (Asakawa, 1990). Substances belonging to each of these structural groups have been shown to act as antioxidants or vice versa as cytotoxic agents.


Sinapic Acid Carnosic Acid Semiquinone Radical Catechol Group Hyperfine Splitting Constant 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.


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Copyright information

© Springer Science+Business Media New York 1998

Authors and Affiliations

  • Wolf Bors
    • 1
  • Christa Michel
    • 1
  • Kurt Stettmaier
    • 1
  1. 1.Institut für StrahlenbiologieGSF Forschungszentrum für Umwelt und GesundheitNeuherbergGermany

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