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Submitted: 22 Jul 2016
Accepted: 14 Dec 2016

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Pharm Sci. 2017;23(2):159-165 doi: 10.15171/PS.2017.23

Study the Efficacy of Antimicrobial Activities of Eight Clinically Applied Disinfectants against Clinical Isolated of Enterococci and Pseudomonas aeruginosa

Research Article

Morteza Zareniya 1, Somayeh Hallaj-Nezhadi 2, Farideh Dinmohamadi 1, Fakhri Haghi 3, Maryam Hassan 1 *

1 Zanjan Pharmaceutical Biotechnology Research Center, Zanjan University of Medical Sciences, Zanjan, Iran.
2 Drug Applied Research Center and Faculty of Pharmacy, Tabriz University of Medical Sciences, Tabriz, Iran.
3 Department of Microbiology, Zanjan University of Medical Sciences, Zanjan, Iran.


Background: Hospital-acquired infections are among the most significant reasons of human mortality world-wide which can be controlled by efficient application of suitable disinfectant for hospital setting. The main goal of the present study was to determine the efficacy of eight routinely used hospital disinfectants against clinical isolates.

Methods: In our descriptive study, in the first step the antibiogram assay of 99 clinical isolates enterococci and Pseudomonas aeruginosa were determined. Then, minimum inhibitory concentration and minimum bactericidal concentration of isolates against Povidone Iodine 10%, Ethanol 70%, Savlon 3.2%, Deconex51Gastro, Procept Floor, Septo med, Surfanious and Gigasept AF were evaluated. Furthermore, the efficacy of disinfectants was reevaluated in presence of 5% (w/v) Bovine Serum Albumin.

Results: The results showed that Septo med and Surfanious are the most and less potent disinfectants against clinical isolates, respectively. It is also resulted that Povidone Iodine is the most effective choice among the conventional disinfectants in this study. Clearly, addition of 5% organic substances reduced the efficacy of selected disinfectants significantly.

Conclusion: Novel quaternary ammonium compounds are the most applicable choice for disinfection of hospital surfaces and instruments in this study.

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