Foam expansion (FE) and foam stability (FS) as
functions of concentration (1-30 mg/ml) are depicted
in Figs. 2A and 2B, for the BPC and the BPHs (10-
30% DH), respectively. The FE increased with
protein concentration in all cases. At 1 and 5 mg/ml
of hydrolysate the DH had no consistent effect on FE,
and at 1 mg/ml of hydrolysate the highest FE was
observed at 20%DH (p