Discrimination of chemical compounds of the oil of Menthasuaveolens (L.) of Eastern Morocco by the GPC-MS and chemometric methods

The study of chemical variability of essential oils from Menthasuaveolens (L.), obtained by hydrodystillation, showedimportant quantitative and qualitative differences . Characterization and valuation were conducted by the determination of the chemical composition of the essential oils, using the gaz phase chromatographic (GPC) coupled with mass spectrometry (GPC/MS).Analysis of the essential oils of the plant Menthasuaveolens(L.) was harvested in nine communities in East Morocco. (Berkane, Trifa, Ahfir, Laayoun, Benioukil, Ain sfa, Jerada, GafaïtandTafoughalt) during the month of may 2015, has led us to identify 61 components. These results show the likely existence of majority chemical compounds, such as: thePulegone, the Piperitone, Piperitone ox, the ox Z-Piperitone, 1, 2-Eepoxymenty, Germacrene D, trans-Caryophyl and the Nepetalactene. To study the chemical variability of the essential oil of the plant from the Menthasuaveolens (L.), it is essential to perform processing chemometric, to the matrix formed by the percentages of the compositions of essential oils. For this, the two most tools frequently used are: principal component analysis. (PCA) and the descending hierarchical classification (DHC) [1]. The application of these tools has allowed us to have synthetic vision of the similarities and differences within a set of samples. So these two techniques allowed us to determine possible links between the essential oils composition and the geographical origins of the plant.