Phytochemical screening of a medicinal plant: Lavandula stoechas (Lamiaceae)

With an aim of developing the aromatic and medicinal plants of Morocco, we were interesting during this study in the characterization and the phytochimic identification of Lavandula stoechas collected in the area of the average Atlas. Lavandula stoechas (Lamiaceae) is a species largely used in traditional medicine for its biological properties allotted primarily to polyphenols. In order to identify the latter in the various parts of the plant (leafs, stems, fruits, roots), we used tests phytochimic based on the reactions of colouring and the chromatographic analyses (CCM). Several extractions with solvents of different polarities were carried out. The results of the extraction of polyphenols by maceration show that water is the best solvent of extraction, followed by the ethyl acetate. In the same way the tests confirm the presence of polyphenols, the flavonoids, tannins, saponins, the reducing compounds, sterols and triterpenes and the cardiac glycosides.