TABLE 3.

IB50 values of different compounds on biofilm formation by S. aureus SA113

CompoundIB50 (μM)aCell growth (%)b
PGG3.6100
NPM41.966
IDA120.450
NAC6381.888
• a IB50 is calculated from the results of the logistic regression equation, which was defined as the concentration of a compound that inhibited 50% biofilm formation.

• b That is, the percentage of growth in relation to the untreated control at the concentration of IB50.