Figure 3.

Metabolite identification based on limit discriminant weight plots. Limit discriminant weight plots of back-scaled OPLS-DA data from GDL milk and probiotic milk treated patient groups with variable covariances presented with different R² cut-off values. (a) GDL acidified milk group; (b) Probiotic milk group. Peak at δ 1.32 ppm represents the β_CH3 of lactate and the peak at δ 4.10 ppm represents the α_CH of lactate. The peak at δ 2.34 ppm represents the α_CH2 proton of 3-hydroxybutyrate. Grey spectra show all covariances and black spectra have a cut-off value R² > 0.6.