Fig. 4From: Statistical optimization and gamma irradiation on cephalosporin C production by Acremonium chrysogenum W42-IThree-dimensional (3D) surface for the effects of inoculum size, incubation period and pH on CPC activity. The remaining parameter (Inoculum size IS) was adjusted to central level when the influence of two parameters (Incubation period IP and pH) was plottedBack to article page