Fig. 4

Three-dimensional (3D) response surface plot showing the influence of independent variables (temperature, pH, incubation period, and inocula volume) on cellulase production of E. faecium BS5. (a) Combined effect of temperature (℃) and pH (b) Combined effect of temperature (℃) and incubation time (hr) (c) Combined effect of temperature (℃) and inocula volume (mL) (d) Combined effect of pH and incubation time (hr) (e) Combined effect of pH and inocula volume (mL) (f) Combined effect of incubation time (hr) and inocula volume (mL).