Quantitative analysis of the native whey protein content was performed
by comparing the peak areas obtained for the corresponding
standard proteins with those of the MWP solutions.
Afterwards, the denatured whey protein content of the MWPs was
calculated by considering the protein content of the samples and
their quantified native protein. The ratio between these two
percentages was reported as the native-to-denatured whey protein
ratio (N/D).