Speciation and adulteration analysis of milk by liquid AP-MALDI MS profiling

AP-MALDI MS profiling coupled with multivariate analysis for speciation and the detection of food adulteration using a simple one-pot sample preparation of milk. Milk samples from cow, goat, sheep and camel were classified with 100% accuracy. With respect to milk adulteration, it was possible to detect goat milk adulterated with 5% cow milk with 92.45% sensitivity and 94.53% specificity. Goat milk adulterated with 10% cow milk was detected with 99.15% sensitivity and 99.10% specificity.