Antioxidant properties and phenolic composition of Sideritis species


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

CHEMISTRY OF NATURAL COMPOUNDS, cilt.40, ss.206-210, 2004 (SCI İndekslerine Giren Dergi) identifier identifier

  • Cilt numarası: 40 Konu: 3
  • Basım Tarihi: 2004
  • Doi Numarası: 10.1023/b:conc.0000039124.83109.ac
  • Dergi Adı: CHEMISTRY OF NATURAL COMPOUNDS
  • Sayfa Sayıları: ss.206-210

Özet

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.