Evaluation of the Effect of Ethyl Alcohol Solutions of Different Concentrations on Bacteria.

This randomized controlled experimental study aims to evaluate the effect of different concentrations of ethyl alcohol solutions on bacterial growth. Alcohol solutions with different volüme concentrations were prepared as a preliminary process. In the first step, alcohol solutions of different concentrations by volume were prepared.. Microbiological agar was used as the medium. In the third process, sterile Petri dishes were obtained, and the dishes to be used were labeled with dirty hands, ethyl alcohol solutions of 10%, 30%, 60%, 70%, 80%, and 96%. A laptop (monitor and keyboard), which is one of the devices frequently used in everday life, was chosen as the sample material. As a result, it was found that the number of colonies in the Petri dishes visibly decreased with increasing alcohol concentration. No bacterial colonies were observed at concentrations of ≥70%. The lowest and most effective ethyl alcohol concentration was found to be 70%. We think that observing bacterial growth at different alcohol concentrations with samples from different environments will provide us with more data on the effect of disinfectants and antiseptics in future studies. [ABSTRACT FROM AUTHOR]