Liquid-liquid equilibria of aqueous two-phase systems made of polyethylene glycol and gelatin systems and their application in emulsion formation

Water-in-water (W/W) emulsion is an interesting template for microentrapment of hydrophilic compounds due to biocompatible nature of its aqueous media. W/W emulsification can be established from a destabilised aqueous two-phase system (ATPS). In this study, binodal data of ATPSs comprising polyethylene glycol (PEG) and gelatin were generated. Binodal curves of PEG + gelatin + water systems were successfully correlated using non-linear empirical...