Phytochemical and Antioxidant Activity of the Essential Oils of Satureja briquetii L. from Morocco

Abstract

Satureja briquetii L. (Labiatae) species are a well-known aromatic plant which is used to produce essential oils and aromatic water in the mountain regions of Sefrou part of Morocco. In our study, it was aimed to determine phytochemical and antioxidant activities of Satureja briquetii L. essential oils in vitro. Antioxidant activities of the oils at differents concentrations were evaluated using the 1,1-diphenyl-2-picrylhydrazyl (DPPH) radical scavenging. The extraction of essential oils from aerial part of this plant is carried out by hydrodistillation, and yields are 1.75% for dry aerial part and 1.05% for fresh aerial part. The analysis of the essential oils of dry aerial part from Satureja briquetii L. by GC/MS identified 57 principles compounds including Spathulenol (9.81%), Verbenone (4.35%), Camphene (3.56%), Himachalene (3,2%) and Cedrene (2,12%). The chromatographic profile of essential oils from fresh aerial part of Satureja briquetii L. has 49 constituents representing 96.25% of the essential oil, where the Menth-8-ene (14.99%), Cymene (4.97%) and Carene (4.97%) are major compounds. The Menth-1,4(8)-diene, (1,06%), Cubenol and Longifolene (3,44%) are in minority. Furthermore, the antioxidant activity of the essential art of Satureja briquetii L. was evaluated by the method of DPPH, and showed a significant efficiency in radical DPPH reducing with an IC50 value of of 31.027 ± 0.586 µg/ml from essential oils of dry aerial and 35.034 ± 0.0432 µg/ml in essential oils from fresh aerial part.