Figure 2.

Effect of different concentration of D. tsuruhatensis SJ01 extract on violacein production. Different concentration of bacterial extract (0.01−0.1 mg/ml) was used to quantify the inhibition of violacein, an indicator of quorum sensing activity. Cultures without extract were considered as a control. ^*Indicates significant differences from the control at P < 0.05 and ^∧ indicates maximum significant differences from the control at P < 0.05.