Figure 2: Growth analysis of L. paracasei NRRL B-50314 as measured by change of optical density at 600 nm over 32 hrs period ( ). The activity of crude laparaxin produced by L. paracasei NRRL B-50314 at each of the corresponding time points were determined by growth inhibition assay against L. lactis LM 2030 as described in Materials & Methods section. The % inhibition activity (*) was calculated as the average of three experiments relative to control L. lactis cultures in which crude laparaxin was replaced with MRS.