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Paper Topic:

kirby-bauer disk diffusion-lab report--i have already done the expirement i just need to you type it nicely :)

kirby-bauer disk diffusion laboratory report


There are currently several commercial soaps and detergents in the market that claim to be antibacterial , killing almost 99 .9 of germs (Weber et al , 2003 Messager et al , 2004 . In to test this claim , the Kirby-Bauer disk diffusion test was performed on four commercial antibacterial products (Shenoy et al , 2002 . The hypothesis of the experiment is that if commercial antibacterial products claim that these kill bacteria , then the application of the Kirby Bauer disk diffusion technique will result in a significant zone of inhibition p

Materials and Methods

Two agar plates were inoculated with Salmonella typhimurium were employed in this experiment and two products were introduced to each plate . The products tested were IvoryTM bar soap , PurrelTM hand sanitizer , DawnTM dishwashing soap and CascadeTM dishwasher detergent The agar plates were incubated for 48 hours at 37oC , after which the plates were noted for zones of inhibition . Control plates were also setup for this experiment Results

No zones of inhibition (0 mm ) were observed for the IvoryTM bar soap (0 mm ) and DawnTM dishwashing soap (0 mm . On the other hand , PurrelTM hand sanitizer and CascadeTM dishwasher detergent showed zones of inhibition of 3 and 4 mm , respectively


Employment of the Kirby-Bauer disk diffusion test showed that the commercial antibacterial products did not show any antibacterial action Two of the four commercial products (IvoryTM and DawnTM ) did not result in any zone of inhibition and thus did not impart any antibacterial effect on...

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