Résumé:
Herbal medicine is a traditional medicine used by the population, it is also the knowledge and use of therapeutic due usually plants properties to the active secondary metabolites « active principle ». This work is part of the development of Saharan plants Zygophyllum album, Cotula Cinerea et Haloxylon scoparium in the treatment of infection diseases by phytochemical and antibacterial study.
Phytochemical analysis of the aqueous and methanolic extract revealed the presence of secondary metabolites in the three plants: alkaloids, flavonoids, terpenoids, tannins, quinones and saponosides.
The qualitative analysis of the extracts by thin layer chromatography (TLC) revealed the presence of alkaloids
The antimicrobial activity was determined on three bacterial strains: Pseudomonas aeruginosa, Staphylococcus aureus and Escherichia coli.
The results obtained show that the strains tested have a variable sensitivity for the two extracts and their concentrations (with inhibition zones variable at 37mm from 05 mm for Escherichia coli; between 35mm from 08 mm for Staphylococcus aureus and between 33mm from 08mm for Pseudomonas aeruginosa )
