Antioxidant activity of Ruscus species from Serbia: Potential new sources of natural antioxidants

Abstract

The antioxidant activity, total phenolic and flavonoid content of ethanolic, acetone and ethyl acetate extracts of Ruscus hypoglossum L. and Ruscus aculeatus L. (aerial parts) from Serbia were investigated in this paper. The best total antioxidant capacity (23.329 ?g AA g-1) and the highest DPPH scavenging activity (IC50 = 182.54 ?g mL-1) were found in acetone and ethyl acetate extract of R. aculeatus L. Ethanolic extract of R. hypoglossum L. showed the highest ABTS radical cation scavenging activity (IC50 = 3.04 ?g mL-1) as well as reducing power (IC50 = 0.143 ?g mL-1). The best inhibitory activity against lipid peroxidation (IC50 =651 ?g mL-1) and the best ferrous ion chelating ability (IC50 = 110 ?g mL-1) were found in acetone and ethyl acetate extract of R. hypoglossum L. The highest total phenolic (8.569 mg GAE g-1) and flavonoid content (0.136 mg RU g-1) were found in ethanolic and acetone extract of R. hypoglossum L. and R. aculeatus L, respectively.