A design of experiments-based experimental strategy is proposed to develop an effective and rapid water
extraction process for maximizing the yield of naturally-emulsified oil based on oil bodies from maize
germ. Orthogonal array (D9) of Taguchi, the signal-to-noise ratio, the main effects, and the analysis of
variance (ANOVA) were adopted to pre-test the process parameters (germ flour particle size (dp), waterto-
solid ratio (w), pH and extraction time (t)) for their effect on the extraction yield (Y) and the diameter
of oil droplets (d3.2).