Optimization and Chemical Characterization of Biosurfactant Produced from a Novel Pseudomonas guguanensis Strain Iraqi ZG.K.M

Figure 6

Effect of different pH values on biosurfactant production. pH 7 was the optimum with the highest E₂₄% (60 ± 0.33%) and lowest surface tension 49 ± 0.33 mN/m.