In the study conducted by van Koningsveld et al. (2006), different potato protein samples
were observed to establish their emulsion-forming and stabilizing effects under various
conditions. Potato fruit juice was collected from the cv. Elkana potato variety. Protein
samples were prepared from PFJ with different extraction techniques to yield five unique
protein samples: potato protein isolate, (NH4)2SO4 precipitate, patatin, ethanol-precipitated
patatin, and protease inhibitor pool (van Koningsveld et al., 2006). The emulsions were
formed in a neutral environment, and it was observed that the emulsion containing patatin
showed no droplet aggregation under microscopic conditions, whereas the other protein
samples showed severe droplet aggregation, and therefore the emulsion was unstable.