Figure 2
From: Ambient mass spectrometry for rapid authentication of milk from Alpine or lowland forage

PLS-DA scores plot based on (+ / −) DART-HRMS metabolites on the train set (n = 63). Ninety-five percent ellipses confidence intervals (0.95-CI) are drawn around each centroid of groupings. MMS, mix crop/maize silages (blue circles); HAY, permanent meadow and lucerne hays (green circles); APS, Alpine pasture (red circles).