Abstract
The essential oil compound, fatty acid composition and the in vitro antioxidant activity of the root and aerial of Glycyrrhiza echinata L., a medicinal plant growing in Turkey, have been studied. The antioxidant capacity tests were designed to evaluate the antioxidant activities of methanol extracts. Total phenolic and flavonoid concentrations of each extract were also determined by using both Folin-Ciocalteu reagent and aluminum chloride. The aerial part was found to possess the highest total phenolic content (146.30 ± 4.58 mg GAE/g) and total antioxidant capacity (175.33 ± 3.98 mg AE/g). The essential oil from root and aerial parts was analyzed by gas chromatography mass spectroscopy (GC-MS) systems. The major components identified were n-hexadecanoic acid, hexahydro farnesyl acetone, α-caryophyllen, hexanal and phytol. In fatty acid profiles of plant, palmitic, stearic, oleic and linoleic acid were detected as the main components. The results of this study have shown that the extracts G. echinata are suitable as a natural antioxidant and food supplement source for pharmacological and food industries due to their beneficial chemical composition and antioxidant capacity.
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