Fig. 3

Response surface plots based on the polynomial model. The figure shows the interactive effects of, a. xylose (A) and inoculum size (B), b. xylose (A) and pH (C), c. xylose (A) and agitation rate (D), d. Inoculum size (B) and pH (C), e. Inoculum size (B) and agitation rate (D), f. pH (C) and agitation rate (D) on the production of xylitol (gL⁻¹)