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