FIGURE 8.
Response surface plots showing the interaction effects between factors on carboxymethyl cellulase (CMCase) activity of consortium VI. (A) The effect of the interaction between culture time and culture temperature on enzyme activity. (B) The effect of the interaction between culture time and pH on enzyme activity. (C) The effect of the interaction between culture time and inoculum volume on enzyme activity. (D) The effect of the interaction between culture temperature and pH on enzyme activity. (E) The effect of the interaction of culture temperature and inoculum volume on enzyme activity. (F) The effect of the interaction of pH and inoculum volume on enzyme activity. Different letters (e.g., “a,” “b,” “ab,” and “c”) in a same column indicate significant differences at p < 5%.