The concentrations of all solutions are given on a wt/wt basis; SPI: soy protein isolate; PEO: polyethylene oxide; ARRE: anthocyanin-rich red raspberry extract; A/D after soy protein denature; B/D before soy protein denature; *Total anthocyanin content (TAC) of anthocyanin-rich red raspberry extract (ARRE): 2.75±0.21 mg cyanidin-3-glucoside per 100 g dryweight; the pH of SPI-C, SPI-ARRE B/D and SPI-ARRE A/D solutions are 12, 11 and 8, respectively