Characterisation of milk samples with various whey protein contents by pyrolysis–mass spectrometry (Py–MS)

Different milk samples and their 2, 5 and 10% mixtures with ‘artificial’ or natural whey protein were analysed by means of pyrolysis–mass spectrometry (Py–MS). Py–MS followed by multivariate analysis of the resulting mass spectra enabled the determination of the whey protein addition in milk samples. Obtained results showed that this determination seems not to be influenced by the fat content and freezing of the samples, as well as a dilution of the samples. ©