Fig. 1

Zone of inhibition data measured in mm (diameter of zone). a DPSI score 2 group; b DPSI score − 3 group; c DPSI score + 3 group. The reference line represents the size of paper disc used (6 mm). The values below reference line for Product A and Product B represents zero inhibition, and a false minimum value of 1 was given to visualize in the graph. The positive error bars represent secondary inhibition zone (diameter in mm)