The total concentration of phenolic compounds was expressed as equivalents of gallate using a standard curve of gallate concentration against absorption at 735
nm (Julkunen-Tiito, 1985).
Note: Because of the subjective nature of the heat stability, rennet coagulation and alcohol stability assays, and the large effect of small diferences in pH on the values obtained, statistical analysis of results of replicate experiments was not possible; all experiments were repeated at least 3 times and were reproducible, i.e. a similar effect was found in all cases.