Contribution à l’évaluation du pouvoir antimicrobien des extraits hydro-éthanolique de Rosmarinus officinalis. L (romarin) de la région Naama sur certains germes responsables de toxi-infections alimentaires.

Abstract

This work focuses on the development of a medicinal plant (Rosmarinus officinalis L.) that belongs to the lameaceae family and grows spontaneously in the Naama region. It is a plant widely used in traditional medicine for therapeutic purposes because of it’s high cotent of phenolic compounds from its leaves with ethanol, followed by an evaluation of the antimicrobial activity of this extract vis-a-vis the four germs responsible for food poisoning Staphylococcus aureus, Escherichia coli, Salmonella typhi, Pseudomonas aeruginosa. Measurements and tests carried out in triplicate trials (growth test, disk diffusion test, minimal inhibitory concentration and minimum bactericidal concentration). Overall, the hydroethanolic extract of Rosmarinus officinalis L. exhibited an antimicrobial activity very close to gentamicin considered to be an antibiotic at the age spectrum.This extract revealed a bactericidal type of action against the studied strains.