Factor Low High Optimum WPC 10.0 14.0 14.0 Amplitude 50.0 100.0 100.0 Time 3.0 9.0 9.0 Optimum value was obtained with the following treatment: Percentage of WPC = 14%; - Amplitude = 100%; Time = 9 min.b) Thermophysical parameters (optimal value of initial freezing temperature = -1,36436°C Factor Low High Optimum WPC 10.0 14.0 14.0 Amplitude 50.0 100.0 84.7005 Time 3.0 9.0 3.0 Optimum value was obtained with the following treatment: Percentage of WPC = 14%; - Amplitude = 84.7005%; Time = 3 min.Optimum value was obtained with the following treatment: Percentage of WPC = 14%; - Amplitude = 84.7005%; Time = 3 min. Factor Low High Optimum WPC 10.0 14.0 14.0 Amplitude 50.0 100.0 79.8809 Time 3.0 9.0 8.8885 Optimum value was obtained with the following treatment: Percentage of WPC = 14%; Amplitude = 79.8809%; Time = 8.885 min.

Table 8: Optimized values of rheological (a) thermo physical (b) and foaming properties (c) at optimal processing parameters (ultrasound amplitude and treatment time and % of WPC).