Résumé:
This work focuses on the valuation of a medicinal plant (R. officinalis) growing spontaneously in two different regions of the country (Mostaganem and Naama). The study consists of monitoring the antimicrobial effects of these extracts against a pathogenic microorganism (S. aureus) responsible for multiple diseases (nosocomial infections, urinary tract infections, dermal diseases, vaginal infections, etc.). The extraction of the bioactive compounds was carried out using four solvents with different polarities (hexane, methanol, ethanol, water).
Measurements and controls carried out in triple tests concerned; (Growth tests, disk diffusion test, minimal inhibitory concentration (MIC) and minimal bactericidal concentration (CMB).
In a general way, the pure water and ethanolic extracts of Rosmarinus officinalis showed antimicrobial activities very close to the gentamicin known as an antibiotic at the age spectrum.
These extracts revealed a mode of action of bactericidal type vis-à-vis the staphylococcus
