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Scavenging Effects of Aspalathus Linealis (Rooibos Tea) on Active Oxygen Species

  • T. Yoshikawa
  • Y. Naito
  • H. Oyamada
  • S. Ueda
  • T. Tanigawa
  • T. Takemura
  • S. Sugino
  • M. Kondo
Part of the Advances in Experimental Medicine and Biology book series (AEMB, volume 264)

Abstract

Rooibos tea ia a totally unique South African product of the plantAspalathus linealis which is only produced in the Cadarberg mountains around Clanwilliam. In South Africa it is mainly used as a substitute for the Oriental black tea by people who enjoy it either hot or cold, or by those who regard it as a healthy drink. Clinically, Rooibos tea is often prescribed for nervous tension, allergies, stomach and digestive problems. For evaluation of its antioxidant action, reactivity of Aspalathus linealis, ascorbic acid, and quercetin which is one of non-glycosidically linked flavonoids included in Asparathus linealis, to various reactive oxygen species were assessed by electron spin resonance (ESR) sipectrometry using 5,5-dimethyl-1-pyrroline-N-oxide (DMPO) as a spin trapper1,2.

Keywords

Electron Spin Resonance Electron Spin Resonance Spectrum Xanthine Oxidase Phorbol Myristate Acetate Electron Spin Resonance Signal 
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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References

  1. 1).
    H.Miyagawa, T.Yoshikawa, T.Tanigawa, N.Yoshida, S.Sugino, M.Kondo, H.Nishikawa, and M.Kohno : Measurement of serum Superoxide dismutase activity by electron spin resonance. J.Clin.Biochem.Nutr., 5: (1988).Google Scholar
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    T.Tanigawa, T.Yoshikawa, H.Miyagawa, S.Ueda, T.Takemura, K.Tainaka, Y.Morita, K.Itani, N.Yoshida, S.Sugino, and M.Kondo : Determination of Superoxide generated by human polymorphonuclear leukocytes by ESR and its clinical application. Jap. J.Inflammation., 8: 443 (1988).Google Scholar
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    J.Robak and R.J.Gryglewski : Flavonoids are scavengers of Superoxide anions. Biochem.Pharmacol., 37:837 (1988).PubMedCrossRefGoogle Scholar

Copyright information

© Plenum Press, New York 1990

Authors and Affiliations

  • T. Yoshikawa
    • 1
  • Y. Naito
    • 1
  • H. Oyamada
    • 1
  • S. Ueda
    • 1
  • T. Tanigawa
    • 1
  • T. Takemura
    • 1
  • S. Sugino
    • 1
  • M. Kondo
    • 1
  1. 1.First Department of MedicineKyoto Prefectural University of MedicineKamigyo-ku, Kyoto 602Japan

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