The determination of total phenolics and flavonoid contents, and antioxidant activity of some sage populations of Salvia fruticosa Mill., Salvia pomifera Mill. and Salvia tomentosa Mill. in the Marmara region of Turkey
Methanolic extracts of 40 different population of three species of Salvia (Salvia fruticosa Mill. 20 samples, Salvia pomifera Mill. 5 samples and Salvia tomentosa Mill. 15 samples) were analyzed for their antioxidant properties. Samples were collected from different natural ecological areas in Marmara Region in Turkey. The antioxidant capacity (TAC) was investigated with the 2,2-Diphenyl-1-picrylhydrazyl (DPPH) radical scavenging method and expressed as trolox equivalents (TE). The amount of total phenolics was determined by using Folin-Ciocalteu method and Flavonoid contents in the extracts were determined by a colorimetric method. The TAC values of the spices ranged from 288. 57 to 3608.32µmol (TE)/100g dw. The total phenolic and flavonoid content ranged from 488.07 to 3277.97mg of gallic acid equivalents (GAE)/100g DW and 664.03 to 4046.77mg of catechin equivalents (CE)/100g DW, respectively.