Fig. 3. Bi-plot (PC1 vs. PC2) from the PCA-model including all 42 VOCs and six sensory descriptors (squares) and the saveloy samples (triangles). The VOCs are denoted according to the compound
code shown in Table 1. The samples are denoted according to the treatment: control (c), Brochothrix thermosphacta (Bt), Chryseomonas luteola (Cl), Leuconostoc carnosum (Lc) and
Carnobacterium maltaromaticum (Cm) and the Mixture samples (M) and the time of measurement: day1 (0), week3 (3), week3+3 days (3+3), week 3+7 days (3+7) and week 4 (4).