Antioxidant activities of solvent extracts from endemic Cyclamen mirabile Hildebr. tubers and leaves

Abstract

In this study, solvent extracts were prepared from different parts of Cyclamen mirabile (CM) and their antioxidant activities were evaluated. Other antioxidant properties of all extracts of CM tubers and leaves, including free radical scavenging activity, reducing power and total phenolic compound content, were also determined. Leaves extracts of CM exhibited higher antioxidant activity than tuber extracts with all the types of solvent used. All concentrations of petroleum ether, acetone, methanol and water extracts of CM leaves showed higher antioxidant activities than that of 0.5 mg of á-tocopherol (42%) and close to BHT (99.30%) and had 96.60, 96.00, 96.10 and 97.40% inhibition of lipid peroxidation of linoleic acid at same doses, respectively. All extracts of CM tubers and leaves had effective free radical scavenging and reducing power. In addition, total phenolic compounds in all the extracts of CM tubers and leaves were determined as pyrocatechol equivalents.

Key words: Cyclamen mirabile, antioxidant activity, reducing power, scavenging activity, total phenolic compound