Evaluation of the antibacterial activity of three essential oils extracted from plants used in traditional medicine in Algeria (Salvia officinalis L, Melissa officinalis L and Origanum vulgare L)

This study consists in highlighting the antibacterial activity of three essential oils extracted from aromatic plants used in traditional medicine in Algeria which are: Salvia officinalis L, Melissa officinalis L and Origanum vulgare L, in order to demonstrate the therapeutic value, we evaluated their antibacterial activity using the antibiogram method. We previously extracted the essential oil from the flowering stems and dried leaves. This is done using a standard device. To mount the antibiogram, we used pathogenic germs resistant to many antibiotics: Enterococcus faecalis ATCC 29212, Staphylococcus aureus ATCC 43300,   Escherichia coli ATCC 25922, Klebsiella pneumoniae carbapénemase positif (KPC+), Klebsiella pneumoniae carbapénemase négatif (KPC-), Enterobacter cloacea, Serratia marcescens, Acinétobacter baumanii, Pseudomonas aeruginosa ATCC 27853, Citrobacter freundi.    The results that we have obtained indicate that the three raw and diluted essential oils exhibit significant antibacterial activity on pathogenic strains which are all very sensitive to raw and diluted essential oils. The three essential oils studied are precious natural bioactive substances that can be used to fight against infectious diseases.