Effet de la photocatalyse heterogene sur l’activite antibacterienne de la Spiramycine et sur la biomasse bactérienne de Staphyloccocus xylosus

Abstract

Nowadays, the widespread and immoderate use of antibiotics in various fields led to the increasing of the antibiotic resistance phenomenon that can induce the reappearance of incurable epidemics. In this context, heterogeneous photocatalysis appears as an alternative technology to clean contaminated water by such molecules. In the present work, we studied the photocatalytic decomposition of spiramycine an antibiotic commonly used in veterinary medicine. We subsequently evaluated its antibacterial activity during its photocatalysis which revealed a loss of antibacterial activity after 45 minutes against Staphylococcus xylosus. Finally, we tested the impact of this process on bacterial biomass of the same germ which the bacterial suspension showed a remarkable decrease in its absorption at 600 nm during treatment.