Table 4.

Aldehydic LOP loadings vectors for a three-component PCA model performed on all analytical data using Varimax rotation and Kaiser normalisation. Bold values indicate significant loadings vectors, and those highlighted in yellow represent the most strongly loaded PC for each aldehyde considered.

Aldehydic LOP	PC1	PC2	PC3
(E)-2-alkenals	0.48	0.80	0.33
(E,E)-2-4-Alkadienals	0.79	0.44	0.42
4-5-Epoxy-(E)-2-alkenals	0.70	0.59	0.41
4-OH-/4-OOH-(E)-2-Alkenals	0.69	0.59	0.39
(E,Z)-2,4-Alkadienals	0.83	0.35	0.42
n-Alkanals	0.65	0.66	0.36
4-Oxo-(E)-2-alkenals	0.50	0.41	0.75
(Z)-2-Alkenals	0.30	0.71	0.62
LMM n-Alkanals	0.61	0.36	0.66