The Relationship Between Total Phenol, Total Flavonoid, and IC50 Contents of Different Parts of Satureja thymbra and Nutrient Elements

Abstract

The goal of this study is to investigate the variations in certain quality parameters, including total antioxidant activity, total phenol and total flavonoid contents, of various organs, including inflorescences, leaves and stems, of the Satureja thymbra plant, which grows naturally in the Kaş district of Antalya. Also, the relationship between these quality parameters and the nutrient content of the plant was revealed. The free radical (DPPH) was used to determine the antiradical scavenging activities of extracts prepared from various parts of the plant. The concentration of the antioxidant compound that can cause a 50 % loss in DPPH free radical activity is expressed by the IC50 value. S. thymbra leaf extracts have higher antiradical scavenging activity (IC50 = 0.11 mg dw/mg-DPPH), total phenol (38.79 mg GAE/g), and total flavonoid (29.0 mg/g) content than extracts of other plant components.