Principal Component Analyses and important loading variables of the phospholipid composition of formula UKB1 and reference materials. Panel (A), British brand 1 (UKB1) with subgroups that represent the hypothesised (*) dominant lipid source hypothesised marked (Red, cows’ milk lipids; Green, soya lecithin). (B), Plot of lipids from skimmed milk powder (SMP) and soya milk with loadings indicating which variables are the most important for distinguishing the two sample types. PC, phosphatidylcholine; PE, phosphatidylethanolamine; PI, phosphatidylinositol. R2 values for each component are shown in parentheses on each axis.