Investigation of silver ions’ antibacterial effect on E. Coli and B. Subtilis

This study investigates the antibacterial effect of silver ions on Escherichia Coli and Bacillus Subtilis. It aims to clarify the correlation between the silver ion concentration and the antibacterial effect. The well diffusion method was used in the experiment, where five different concentrations of silver ions were examined (0, 1, 5, 20 and 50 mM). Every concentration was tested 12 times on each bacterial strain and the inhibition zone was measured after 24 h. The results generally showed that higher silver ion concentrations induced a higher antibacterial effect. Moreover, the effect on Bacillus Subtilis was greater than the effect on Escherichia Coli. A tendency of a plateau-effect could also be observed. However, a clear trend could not be established.

Category: BIOLOGY Country: SWEDEN Year: 2021


Milla Linnéa Astrid Glännfjord

Linus Patrik Widholm