Protective effects of the aerial parts of Salvia officinalis, Melissa officinalis and Lavandula angustifolia and their constituents against enzyme-dependent and enzyme-independent lipid peroxidation

The antioxidant effects of aqueous methanolic extracts from three medicinal Lamiaceae species were investigated in enzyme-dependent and enzyme-indepen dent lipid peroxidation systems. All these extracts caused a considerable c oncentration-dependent inhibition of lipid peroxidation. Phenolic component s present in the plant extracts were evaluated for antioxidant activity and were found effective in both tests. Their concentrations in each extract w ere determined by TLC-densitometry.