Fig. 2. (a) Principal component analysis (PCA) and (b) loading plots of partial least squares-discriminant analysis (PLS-DA) from quantified metabolites of whole chicken meat extracts using 2D NMR (heteronuclear single quantum coherence, HSQC) on 850 MHz cryo-NMR spectrometer.

Highlighted variates (yellow dots) on loading plot mean variance importance on projection (VIP) score>1. 2D NMR, two-dimensional nuclear magnetic resonance.