Biological Evaluation of the Antibacterial efficiency of some Biodegradable Detergents and some Commercial Disinfectants

Publication Date : 07/10/2015

Author(s) :

Dina A. Maany , Ahmed I. El-Diwany , Amr A. El-Waseif.

Volume/Issue :
Volume 1
Issue 10
(10 - 2015)

Abstract :

Antiseptics and disinfectants are used extensively in hospitals and other health care settings for a variety of topical and hard-surface applications. However, their antibacterial effectiveness is not always well declared by the manufacturers and consumers find it difficult to choose the right product according to their needs. Four biodegradable detergents: K3, NanoClear, NanotolPrimer and NanoFix, products of commercial company were tested for their antimicrobial activity and compared with commercial disinfectants such as Dettol and Clorox against Escherichia coli ATCC 25922, Pseudomonas aeruginosa ATCC 27953, Bacillus cereus ATCC 33018, Staphylococcus aureus ATCC 29213. Minimum inhibitory concentration (MIC) and Lethal Contact Time was carried out. The results revealed that %10 Nanofix, %3 NanotolPrimer, %50 NanoClear except for P.aeruginosa was %100 and %10 K3 except for P.aeruginosa was %15, Dettol %5 and Clorox %5. The results showed that: Nanofix and Nanotol Primer had an effective antimicrobial effect nearly similar to that of Dettol and Clorox while K3 affected the tested microorganisms moderately and Nanoclear affected all tested bacterial pathogens only in the concentrated form without dilution. Also a test of Contact Lethal Time of concentrated detergents against test organisms at time intervals 0, 30 seconds and 1, 2, 5, 10 minutes was carried out and the results showed that the biodegradable detergents were acting as antiseptics not as disinfectants while the commercial disinfectants (Dettol and Clorox) were disinfectants showing no growth of bacterial cells after contact time less than 30 seconds

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