Constituents of natural medicines with scavenging effects on active oxygen species - Tannins and related polyphenols

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48 Citations (Scopus)

Abstract

An ESR study showed that tannins scavenged 1,1-diphenyl-2-picrylhydrazyl (DPPH) radical, a model free radical in lipids generating the signals of their phenoxy radicals. Tannins were also shown to scavenge the superoxide anion radical. Therefore, the inhibitory effects of tannins on lipid peroxidation seems to be related to their radical-scavenging activity. By this study, caffeoyl esters from some plant species of the families of Compositae and Labiatae, were shown to inhibit lipid peroxidation, and several licorice polyphenols to have scavenging effects on DPPH and superoxide anion radicals.

Original languageEnglish
Pages (from-to)357-363
Number of pages7
JournalNatural Medicines
Volume49
Issue number4
Publication statusPublished - Dec 1 1995

Keywords

  • 1, 1-diphenyl-2- picrylhydrazyl radical
  • ESR
  • caffeoyl ester
  • dl-α-tocopherol
  • licorice
  • lipid peroxidation
  • polyphenol
  • radical scavenger
  • superoxide anion radical
  • tannin

ASJC Scopus subject areas

  • Molecular Medicine

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