Figure 4
From: A Comparison of the Antibacterial and Antifungal Activities of Thiosulfinate Analogues of Allicin

Plate inhibition zone assay showing the antimicrobial activity of different thiosulfinates against various bacteria and yeast. (a) Representative pictures for Gram-negative bacteria (E. coli K12, Pseudomonas spp.), Gram-positive bacteria (M. luteus) and yeast BY4742 cells. Cells were incorporated in 50 °C warm agar and poured into a Petri-dish. The upper well contained 20 µL of 8 mM solution, the hole at the left side of each Petri-dish contained 20 µL of 4 mM solution and the hole at the right side of the Petri-dish contained 20 µL of 2 mM solution of each compound tested. (b) The diameter of inhibition zone was measured for the hole containing 20 µL of 8 mM solution of the test compound. Error bars show standard deviation about the mean, n = 9.