Chemical composition, acute toxicity, antioxidant and anti-inflammatory activities of Moroccan Tetraclinis articulata L.

摘要

Hydro-distilled essential oil (EO) from the leaves of the western Mediterranean and Moroccan endemic plant Tetraclinis articulata was analyzed by GC/MS and examined for its acute toxicity on mice, in order to establish the safe doses. Furthermore, the anti-Inflammatory activity was evaluated based on carrageenan and trauma induced rats paw edema and the antioxidant potential has been investigated using different methods including DPPH radical-scavenging assay, Trolox equivalent antioxidant capacity (TEAC) and Ferric-reducing antioxidant power assay (FRAP). The major identified compounds in GC/MS analysis were bornyl acetate (26.81%), camphor (22.40%) and α-pinene (7.16%), with 25 other minor constituents. No mortalities in acute toxicity were observed, indicating that the LD 50 of T.?articulata essential oil is highest than 5?g/kg. In the anti-inflammatory test based on chemical and mechanical induced trauma, the EO demonstrated an effective reduce swelling by 64.71?±?9.38% and 69.09?±?6.02% respectively obtained 6?h after administration at the dose of 200?mg/kg when compared to the control groups. Moreover in the antioxidant testing battery, T.?articulata essential oil showed a promising scavenging effect measured by DPPH, TEAC and ferric-reducing power assays with IC 50 values of 12.05?±?0.24?mg/mL, 8.90?±?0.17?mg/mL and 0.15?±?0.01?mg/mL respectively. These results suggest that, the EO from the leaves of T. articulata constitutes a valuable source of anti-inflammatory and antioxidant metabolites. These findings argue for the possible integration of this oil in pharmaceutical, cosmetic and food industries. Graphical abstract Display Omitted.