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The knowledge of the plants that are used may provide insight on their properties for further exploration. This study aimed to identify and collect data about medicinal plants used in traditional medicine by the population of the provincial region of Taza, Morocco. An ethnobotanical survey was carried out among 200 informants, competent villagers, herbalists, and traditional healers from the provincial region of Taza city through direct interviews using a structured questionnaire. The survey reported 55 plant species belonging to 28 families used in the folk medicine. Informants’ results showed that the most frequently used plants were Origanum compactum, Mentha pulegium, Rosmarinus officinalis L., Aloysia citrodora, Calamintha officinalis Moench, and Artemisia herba-alba Asso., with a relative frequency of citation of 76%, 72%, 60%, 42%, 40%, and 30%, respectively. Moreover, in this study, the Lamiaceae family was the most commonly reported plant family, and the leaves were the most frequently used parts of the plants; otherwise, decoction and infusion were the most used modes in the preparation of remedies from medicinal plants in the traditional medicine. The sociodemographic characteristics showed that women use medicinal plants slightly more than men, the illiterate people use the medicinal plant the most, and old people have more information about the medicinal plants than the new generations. The region of Taza of Morocco has an important floristic biodiversity of medicinal plants which are used in traditional medicine practice. This result provides a good database for pharmacological screening in the search for new plants that can contain new bioactive molecules that can be used as a bioactive ingredient of medicament or as a biological alternative in pharmacology.

The aim of the present work is to compare the chemical composition, antibacterial and antifungal activity of two spontaneous species of lavender "Lavandula stoechas L." and "Lavandula dentata L." in Morocco. A phytochemical screening was performed on the aerial part of invested plants. The qualitative variation was revealed in the secondary metabolites of the species studied. Subsequently, the dosage of the crude organic extracts showed that the polyphenol content was higher in the methanol fraction, with an important yield in L. dentata. Also, the essential oils of the aerial part, obtained by hydrodistillation gave higher yields in L. dentata than L. pedunculata. Finally, tests of the antibacterial and antifungal activity of the essential oils of the two species were performed on four strains of bacterial pathogens (Staphylococcus aureus "Gram+," and Escherichia coli; Klebsiella pneumoniae and Proteus mirabilis which are Gram-), and three phytopathogenic fungi : Rhizopus stolonifer, Aspergillus brasiliensis and Penicillium expansum, The results obtained showed that the essential oil of L. dentata showed a strong antibacterial activity against the studied strains, particularly against S. aureus. While the antifungal activity revealed that L. pedunculata has a remarkable antifungal power against the fungi tested in comparison with L. dentata.

Objective: In the framework of the search for new biological molecules, an ethnobotanical study has been carried out in the region of El Hajeb in Morocco in the interest of will select the data ethnopharmacological on medicinal and aromatic plants and on the découveres new principles assets. On the basis of a questionnaire prepared, a survey was conducted of the local population where we find a close relation which exists between the plant species described in the said region and the different types of diseases affecting the human being; six plants have been chosen to evaluate the antifungal activity of essential oils against the bacterial strain (Staphylococcus aureus, and on two yeasts: Candida albicans and Candida glabrata, which are the most frequently identified in clinical specimens, a mold: Aspergillus niger, and 5 dermatophytes: Microsporum canis, Microsporum gypseum, Trichophyton rubrum, Trichophyton mentagrophytes, and Epidermophyton floccosum.Methods: The extraction of essential oils was carried out by steam distillation in a clevenger-type apparatus. The antimicrobial activity was determined by the disc diffusion method. The chromatographic analysis of HE five plants was performed with a gas chromatograph (GC) type Hewlett-Packard (6890) coupled to a mass spectrometer (HP5973).Results: The results show that the essential oil of Teucrium capitatum L. has a large antimicrobial activity vis-a-vis other plants. Therefore, an identification of their chemical composition is necessary to identify the active molecules based on the analysis GC-only and coupled to mass spectrometry (GC-MS). The essential oil of the plant of T. capitatum L. of the region of El Hajeb (Morocco) was extracted to the study its performance, its chemical composition, and its property antibacterial and antifungal. The average content in essential oil of the leaves of this species is approximately2% (wt.) of the total weight of dry matter. The chromatographic analysis showed the profiles, and the rates of the different components compared to the available standards, as function of the retention time by ascending order, four compounds were identified by GC and GC/MS as the main compounds of this oil: Endo-borneol (33%), naphthalene, 1, 2, 3, 5, 6, 8a-hexahydro-4,7-dimethyl-1-(1-methyl ethyl)-, (1s-cis)-(19.63%), bronyle acetate (15.56%), alpha-terpineol (11.96%), bicyclo[3.1.0]hexan-3-ol, 4-methyl-1-(1-methylethyl)-(10.94%) among other 21 compounds.Conclusion: This study allows, once again, the development of the exploitation of the essential oils in the areas, pharmaceutical and medicines and works the doors of the exploitation of these plants in the pharmaceutical market. Keywords: Teucrium capitatum L., Ethnobotanical study, Antifungal activity, Chromatography.