Turkish Journal of Pharmaceutical Sciences, cilt.10, sa.3, ss.453-461, 2013 (SCI-Expanded)
Scorzonera species (Asteraceae) are mainly used as vegetables and medicinal plants in Europe and in Turkey. Current study is aimed to evaluate antioxidant capacities of Scorzonera species and characterize the phytochemical content of tested extracts to determine the responsible compounds. Superoxide anion scavenging method was used to determine antioxidant activities. Chemical composition of the tested extracts was also investigated by RP-HPLC method using phenolic acid and flavonoid standards. All extracts exhibited significant scavenger activity against superoxide anion radical. The highest inhibitory activity was observed with S. parviflora root extract with IC50=2.25 mg/mL value. Hyperoside and rutin were found to be in the extracts from the aerial parts and chlorogenic acid was detected in all the extracts investigated.