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Thymus  plants has been used for several beneficial health properties including antioxidant and antibacterial activities. The aim of this study was to determine the chemical composition, antioxidant and antibacterial potential  in vitro  of aerial part of  Thymus atlanticus  essential oil and phytochemical screening of the extracts. Results showed that carvacrol was the major component of the essential oil (85.13%). Phytochemical screening of the extracts showed that gallic tannins, flavonols, triterpenes, sterols and mucilage are present on high amount. Antioxidant activity (IC 50 ), total phenolic and total flavonoid content of the extract obtained by soxhlet method and using hydromethanolic solvent recorded the highest values (0.029 mg/mL, 5.92 mg GAE/g and 0.86 mg QE/g respectively) compared to other extracts. The IC 50  of the essential oil was equal to 0.990 µg/mL and therefore has exhibited an antioxidant power higher than the extracts. The essential oil of  Thymus atlanticus  showed a strong antimicrobial activity against  Escherichia coli  compared to the fifteen pathogenic bacteria with an average inhibition zone of 32±1.0 mm and minimum inhibitory concentration of 0.3 µL/ mL. These findings indicate that  Thymus atlanticus  essential oil and extracts could be a source of potential antioxidant and antibacterial natural compound.

journal of essential oil bearing plants

Chemical Composition, Antioxidant and Antibacterial Activities of Essential Oil and Phytochemical Screening of Extracts of Aerial Parts of  Thymus atlanticus