Antioxidant Properties and Phenolic Composition of Sideritis Species

Öztürk N., Tunalıer Z., Koşar M., Bozan B., Başer K. H. C., Duman H.

CHEMISTRY OF NATURAL COMPOUNDS, vol.40, pp.206-210, 2004 (SCI-Expanded, Scopus)

  • Publication Type: Article / Article
  • Volume: 40
  • Publication Date: 2004
  • Doi Number: 10.1016/j.cmpd.2004.03.206
  • Journal Name: CHEMISTRY OF NATURAL COMPOUNDS
  • Journal Indexes: Scopus, Science Citation Index Expanded (SCI-EXPANDED)
  • Page Numbers: pp.206-210
  • Anadolu University Affiliated: Yes

Abstract

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. Total phenol concentration of the extracts was estimated with Folin-Ciocalteu reagent using gallic acid as standard, and phenolic components were quantified by HPLC-DAD.