Research Article

Factorial Design to Optimize Biosurfactant Production by Yarrowia lipolytica

Figure 2

Pareto Chart of standardized effects for emulsification index (a) and Δ surface tension (b) for the 2 4 full factorial design used in the optimization of nitrogen source. The point at which the effects estimates were statistically significant (at P  =  .05) is indicated by the broken vertical line.
821306.fig.002a
(a)
821306.fig.002b
(b)