Egg yolk emulsification properties
The methods of Wang and Wang (2009) were used. Egg yolk (1.5 g) was suspended in 25 mL of DI water and soybean oil was added at a constant rate. The amount of oil added until phase inversion was used to calculate the emulsification capacity (EC, g oil/g yolk). Emulsion stability (ES) was measured and calculated by dividing the nonseparated volume by total volume after 1 d of
standing of the emulsion at 23 ◦C.