After incubation,
the wells were examined for growth of microorganisms by measuring
optical density (OD) value of the wells. Each experiment was repeated
three times and Norfloxacin, bacteria suspension of 5% (v/v) DMSO
were used as a positive control and a blank control, respectively. By comparing
to OD values, we can point out MIC values of these compounds
among the selected concentration range and MIC N 100 μg/mL was
considered to be inactive