Preliminary phytochemical and antioxidant study of hydroalcoholic extracts from selected genera of Indian Lamiaceae

Abstract

ObjectiveTo investigate the antioxidant activity and total phenolics content of the hydroalcoholic extracts of Salvia officinalis and Plectranthus mollis. MethodsThe total antioxidant capacity and phenolic contents of hydroalcoholic extracts of the leaves of Salvia officinalis and Plectranthus mollis were evaluated using standard in-vitro methods. The total phenol and total flavonoid were determined spectrophotometrically. Quercetin and Gallic acid were used for these parameters. The antioxidant activity of the extracts were determined by phosphomolybdenum method. ResultsOur results clearly demonstrate that both the extracts have antioxidant capacity. The inventions of antioxidant capacity harmonize with total flavonoid and phenol contents. ConclusionsA correlation between the antioxidant activity and the total phenolic contents of the extracts indicated that phenolic compounds were the dominant contributors to the antioxidant activity of both the plants. The results of the study show that Plectranthus mollis has the most flavonoid and phenol contents and the antioxidant capacity.