Mixture experiment. Three component design of experiment shows limitation and thermolability of cellobiohydrolase activity compared to the cellulase background of delta-CEL7A delta-CEL6A RL-P37. Shown are the experimental design points (left), contour plots for 50°C saccharification (middle) and 60°C saccharification (right). Red dots represent actual data points. Duplicate data points are indicated by the label (2). Contour labels indicate percent glucan conversion.