Salvia officinalis of different origins Antioxidant activity, phenolic and flavonoid content of extracts

Abstract

Salvia officinalis L. plants originated from continental (Mt. Pleš, Serbia) and Mediterranean part of Central Balkans (Luštica peninsula, Montenegro) grew under the same conditions in Belgrade. Various extracts of plant material, collected during summer and winter season, were analyzed for the antioxidant activity and phenolic and flavonoid contents. DPPH, ABTS, and FRAP assays for antioxidant activity, as well as total phenol and flavonoid content, were measured spectrophotometrically. Phenolic and flavonoid content and antioxidant activity of the extracts mostly depended on extraction solvent and harvesting season. The extracts of plants originated from Serbia showed stronger antioxidant activity. Generally, plants collected in summer season performed higher activity. Among tested extracts, ethanol extract showed better antioxidant activities compared to other analyzed extracts.