Fig. 2

3D Response surface plots representing the interaction between each two independent variables and their effect on spMCA. Other variables were kept at their constant level. a spMCA vs temperature; time, b spMCA vs casein; pH, c spMCA vs pH; time, d spMCA vs pH; temperature, e spMCA vs moisture; time, f spMCA vs moisture; temperature, g spMCA vs casein; temperature, h spMCA vs Moisture; pH, i spMCA vs casein; time, j spMCA vs casein; moisture