Antioxidant properties and phenolic composition of Sideritis species

Tunalier Z., Kosar M., Ozturk N., Baser K., Duman H., Kirimer N.

CHEMISTRY OF NATURAL COMPOUNDS, vol.40, no.3, pp.206-210, 2004 (SCI-Expanded) identifier identifier

  • Publication Type: Article / Article
  • Volume: 40 Issue: 3
  • Publication Date: 2004
  • Doi Number: 10.1023/
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Page Numbers: pp.206-210
  • Keywords: Sideritis, antioxidant, HPLC, free radical scavenging activity, lipid peroxidation, composition, PERFORMANCE, DITERPENES, EXTRACTS
  • Anadolu University Affiliated: No


The antioxidant properties and phenolic composition of 27 Sideritis species were studied. Plant samples were extracted with petroleum ether using a Soxhlet apparatus. The defatted plant materials were extracted with 70% methanol. Antioxidant activities of the extracts were measured using Fe+2 induced linoleic acid peroxidation, as indicated by thiobarbituric acid reactive substance (TBARS) production. Free radical scavenging activities were determined based on 1, 1 -diphenyl-2-picrylhydrazyl radical (DPPH). Results were compared with standard BHT. Totalphenol concentration of the extracts was estimated with Folin-Ciocalteu reagent using gallic acid as standard, and phenolic components were quantified by HPLC-DAD.