Title : Comparative analysis of the volatiles isolated from the stem bark and the leaves of Fraxinus dimorpha species
Abstract:
F. dimorpha Coss. et Dur. (Oleacea), known as dardar in Algeria, have been used in folk medicine in different parts of the world for their diuretic, mild purgative effects and for the treatment of constipation. The aim of the present work is to investigate and to compare the volatile constituents of the leaves and stem bark. The diethylether fractions were isolated from bark and leaves by using Licknes-Nickerson apparatus. The constituents of the two samples by were identified by using analytical gas chromatography-mass spectrometry (GC/MS) method. 46 compounds were identified and reported for the first time. The main groups of components identified were aromatic alcohols and ethers (37.3%), aliphatic acids and esters (26.3%), aliphatic alcohols (10.3%), diterpenes (8.3%) and sesquiterpenoides (2.5%) from the leaves and aromatic alcohols and ethers (43.8%), aliphatic acids and esters(28.2%), diterpenes (1.5%) from the stem bark. This study constitutes a preliminary work to evaluate the volatile contents of the isolated fractions from the studied species. These promising results pave the way for further detailed studies of their chamical composition and finding of the active components.
Keywords: Fraxinus dimorpha; bark; leaves; Oleaceae; volatiles.
