Antioxidant activity and total phenolic and flavonoid contents of Salvia amplexicaulis Lam. extracts
Alimpić, Ana (Faculty of Biology, Belgrade (Serbia). Institute of Botany and Botanical Garden Jevremovac) | Oaldje, Mariana (Faculty of Biology, Belgrade (Serbia). Institute of Botany and Botanical Garden Jevremovac) | Matevski, V. (University Sts. Cyril and Methodius, Skopje (Former Yugoslav Republic of Macedonia). Faculty of Natural Sciences and Mathematics, Institute of Biology | Marin, P. D. (Faculty of Biology, Belgrade (Serbia). Institute of Botany and Botanical Garden Jevremovac) | Duletić-Laušević, Sonja (Faculty of Biology, Belgrade (Serbia). Institute of Botany and Botanical Garden Jevremovac)
This study was designed to examine the in vitro antioxidant DPPH free radical-scavenging activity, and the total phenolic and flavonoid content of ethanol and methanol extracts of Salvia amplexicaulis Lam. in the whole plant and dif- ferent parts, leaves, stems and flowers. The largest amounts of extract yield were obtained from the flowers, 14.14% and 12.00 % (w/w) in the ethanol of methanol extracts, respectively. The ethanol extract of leaves (16.07 µg/ml) and methanol extract of the whole plant (21.28 µg/ml) showed the highest activity against the DPPH radical. The ethanol extract of the leaves was the richest in phenols (222.40 mg GAE/g) and flavonoids (49.81 mg QE/g), whereas the methanol extract of the whole plant contained the highest amount of phenolics (180.89 mg GAE/g) and flavonoids (38.15 mg QE/g). A very strong linear correlation between antioxidant activity and the phenolic content of the extracts was established. The obtained re- sults suggest that S. amplexicaulis could be regarded as an important source of natural antioxidants.
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