Whey protein isolate (WPI) has the potential to be a Pickering stabilizer, but its applications in emulsions are restricted due to its structural susceptibility to external environments. Proanthocyanidin (PAC) is a natural antioxidant polyphenol that can improve protein properties and enhance the stability and longevity of emulsions. In the current work, PACs were employed to bind WPIs, forming a complex to stabilize Pickering emulsion. Fluorescence spectroscopy, infrared spectroscopy, confocal microscopy, quartz crystal microbalance with dissipation monitoring (QCM-D), and antioxidant stabili...
