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International Letters of Chemistry, Physics and Astronomy
ILCPA Volume 59

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Chemical Composition, Antioxidant Activity of the Essential Oil of Thymus algeriensis Boiss, North Algeria

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The leaves of Thymus algeriensis Boiss. collected from middle-North of Algeria (Sidi Aissa, M'sila). Essential oil from the stem bark of Algerian species of Thymus algeriensis Boiss. of the family of Lamiaceae was obtained by hydro-distillation using Clavenger apparatus, possessed an essential oil in 1.3 % (v/w) yield. GC and GC/MS analysis were carried out on the essential oil and was found to contain Seventy-one compounds, representing 95.99 % (area percent) of the total oil composition. Oil was rich in Oxygenated Monoterpenes (45.14 %), exhibited higher percentage of Camphor (22.60 %) followed by Camphene (12.78 %), Borneol (11.16 %), 1,8-Cineole (5.94 %), Acorenone (5.84 %) and α-Pinene (5.01 %). The principal constituents are hydrocarbons, ketones, alcohols, esters and aldehydes. The antioxidant activity of essential oil was investigated by measuring the decrease in absorption at 517 nm of 1,1-diphenyl-2-picrylhydrazyl radical (DPPH) in a UV/visible spectrophotometer. The oil exhibited weak antioxidant activity by DPPH free radical scavenging bioassay (IC50 = 83.8 mg/ml).


International Letters of Chemistry, Physics and Astronomy (Volume 59)
O. Hamza et al., "Chemical Composition, Antioxidant Activity of the Essential Oil of Thymus algeriensis Boiss, North Algeria", International Letters of Chemistry, Physics and Astronomy, Vol. 59, pp. 72-80, 2015
Online since:
September 2015

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