FIGURE 5.

Phenol biodegradation by the five isolates designated as DW-1, DW-2, DW-3, DW-4, and DW-5. Cultures were incubated in 80 mL of MSM supplemented with 500 μg/L of phenol at 30°C at 120 rpm. No phenol degradation occurred in the autoclaved control bottles. The mean values from triplicate experiments and the standard errors of the means, indicated by error bars, are shown.