Abstract
The present work explore the efficiency of some disinfectants used in hospitals in the operating theaters of the Maternity Department and the Neonatology Unit in the EHS of Tlemcen. Four biocides of different formulations were used: quaternary ammonium, glutaraldehyde, alcohols, and quaternary ammonium + alcohols. The disinfectant sensitivity test was carried out by determining the minimum inhibitory concentration of the different molecules on microplate with respect to eight reference strains and 50 strains of Enterococci isolated in a hospital environment. The results of the MIC revealed a good efficiency of quaternary ammoniums and alcohols on Enterococci . However, the glutaraldehyde product remained ineffective with respect to the majority of strains tested. In conclusion, the concentration of the disinfectant used the diversity of the active ingredient and the type of microorganism greatly influence the activity of the biocide. Keywords:
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