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Figure 1

From: Speciation and milk adulteration analysis by rapid ambient liquid MALDI mass spectrometry profiling using machine learning

Figure 1

(a) Linear Discriminant Analysis (LDA) plot obtained with Abstract Model Builder (AMX) from the MS profile data of sample sets of four different mammals, using the m/z range from 400 to 1000. (b) Volcano plot displaying the m/z values of ions linked to cow milk classification. (c) Graphical representation of some of the most significant differences in the relative signal intensities for lipid ions that are highly relevant for cow milk classification. Based on their m/z values the peaks at m/z 699.41 and m/z 728.50 can be putatively assigned to the [M + H]+ ion species of glycerophosphoinositol PI 24:0 and glycerophosphoethanolamine PE 35:3 or glycerophosphocholine PC 32:3 , respectively.

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