Lipidomics revealed the geographical origin and breed variability of sheep milk

Figure S1. PCA score plot of test samples and quality control (QC) samples.
Figure S2. Total ion chromatograms of QC samples in positive ion mode (A) and negative ion mode (B).
Figure S3. Total ion chromatograms of blank sample In positive ion mode (A) and negative ion mode (B).
Figure S4. One dimensional distribution diagram of PCA-X for quality control (QC) samples in PCA scores plot.
Figure S5. The peak areas of lipid classes among different breeds and different geographical origins.
Figure S6. Permutation test of OPLS-DA model for East Friesian (China) vs. DairyMeade (China) (A), and East Friesian (China) vs. East Friesian (Netherlands) (B).
Figure S7. FDA scores of two breeds and two geographical origins.
Table S1. The identification of lipids in positive and negative ion mode.
Table S2. The distribution of lipids in sheep milk from three sources.
Table S3. Lipids with significant differentials between two breeds and two origins.
Table S4. Results of stepwise canonical discriminant analysis for breed (DairyMeade vs. East Friesian) and origin (China vs. the Netherlands) comparisons.
Discriminant formulas