2004 Volume 27 Issue 5 Pages 702-705
Antioxidant and 2,2-diphenyl-1-picrylhydrazyl (DPPH) radical scavenging activities, reducing powers and the amount of total phenolic compounds of aqueous and/or methanolic extracts of some medicinal plants used in Eastern Turkey were studied. These plants are Prangos ferulacea (ÇAŞIR), Sedum sempervivoides (HOROZ LELESI), Malva neglecta (EBEMGÜMECI), Cruciata taurica (SARILIK OTU), Rosa pimpinellifolia (KOYUN GÓZÜ), Galium verum subsp. verum (MADAVUR OTU), Urtica dioica (ISIRGAN). The highest peroxidation inhibitions were shown by aqueous extracts of C. taurica and R. pimpinellifolia (IC50: 0.00022 mg/l and IC50: 23 mg/l, respectively). However, the highest DPPH radical scavenging activity, reducing power and the amount of phenolic compounds were shown by R. pimpinellifolia. The lowest antioxidant properties were shown by aqueous extract of M. neglecta.