Table 2.
Power density | 0 W/cm2 | 1.5 W/cm2 | 2.5 W/cm2 | ||||||
---|---|---|---|---|---|---|---|---|---|
Exposure time | 15 min | 30 min | 45 min | 15 min | 30 min | 45 min | 15 min | 30 min | 45 min |
No Biofilm* | 0.94† | 1.70 | 1.38 | 1.35 | 2.38 | 2.37 | 1.74 | 2.81 | 3.25 |
13-hr biofilm | 0.00 | 0.00 | 0.00 | 0.04 | 0.23 | 0.79 | 0.09 | 0.76 | 1.45 |
24-hr biofilm | 0.00 | 0.00 | 0.00 | 0.03 | 0.20 | 0.34 | 0.00 | 0.22 | 0.80 |
The disk was place atop 2 filter membranes on the gentamicin plate with no biofilm present.
The concentrations were determined by zones of inhibition.