Fig. 11. Model prediction of emulsion (a) average particle size, (b) destabilization % and (c) viscosity as a function of normalized input parameters: solubility (S), interfacial tension (IT), water (WHC) and oil holding capacity (OHC), and intrinsic fluorescence (IF). The strength of the relationship between the input and output (emulsion droplet size, destabilization and viscosity) parameters was investigated using the one-factor-at-a-time (OFAT) approach, where one input variable was changed step-by-step from a low to a high value at one time, while the other variables were kept fixed at their mean normalized baseline values.