Antioxidant activity of selected plant species; potential new sources of natural antioxidants |
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Authors: | N. Nićiforović,V. Mihailović,P. Ma&scaron ković,S. Solujić,A. Stojković,D. Pavlović Muratspahić |
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Affiliation: | 1. Faculty of Science, Department for Chemistry, University of Kragujevac, Radoja Domanovi?a 12, 34000 Kragujevac, Serbia;2. Faculty of Science, Department for Biology, University of Kragujevac, Radoja Domanovi?a 12, 34000 Kragujevac, Serbia;3. Faculty of Agronomy, University of Kragujevac, Cara Dušana 34, 32 000 ?a?ak, Serbia |
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Abstract: | The aim of this study was to examine six plants from Serbia for their potential antioxidant activity. Therefore, six antioxidant activity assays were carried out, including: total antioxidant capacity, DPPH free-radical scavenging, the inhibitory activity toward lipid peroxidation, Fe3+- reducing power, Fe2+- chelating ability and hydroxyl radical scavenging activity. Total phenolic and flavonoid contents were also determined for each alcoholic extract. Cotinus coggygria extract contained the highest amount of total phenols (413 mg GAE /g dry extract), while the highest proportion of flavonoids was found in the Echium vulgare methanol extract (105 mg RU/g). Cotinus coggygria and Halacsya sendtneri alcoholic extracts showed the highest total antioxidant capacity (313 and 231 mg AA/g dry extract), as well as DPPH free-radical scavenging (IC50 = 9 and 99 μg/ml), inhibitory activity toward lipid peroxidation (IC50 = 3 and 17 μg/ml) and reducing power. Whereas, the greatest hydroxyl radical scavenging activity, as well as ferrous ion chelating ability showed Echium vulgare, Echium rubrum and Halacsya sendtneri. |
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Keywords: | Antioxidant activity Flavonoid content Free-radical scavenging Lipid peroxidation Total phenolic content |
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