Table 3. Compounds significantly correlated to first and second dimensions of the multiple factor analysis (MFA).
| Tentative of Identification | Chemical Protonated Formula | First dimension | Pearson correlation coefficient | Tentative of Identifications | Chemical Protonated Formula | Second dimension | Pearson correlation coefficient |
|---|---|---|---|---|---|---|---|
| Alkyl fragment (ethenone) | C2H3O+ | O4 | 1.000 | 2-Hydroxy-4-isopropylnaphthalene | C13H15O+ | P5 | 1.000 |
| Alkyl fragment | C5H11+ | H9 | 1.000 | 2,4-Dimethylfuran | C6H9O+ | T6 | 1.000 |
| 2-Heptenal | C7H13O+ | T10 | 1.000 | Cyclopentyl-1-thiaethane | C6H13S+ | S20 | 1.000 |
| 2-Methyl-1-propanol | C4H11O+ | O18 | 1.000 | 2-Methyl-5-(1-methylethenyl)-2-cyclohexen-1-ol (Carveol) | C10H17O+ | T20 | 0.998 |
| 2-Pentylfuran | C9H15O+ | T17 | 1.000 | 2,3-Octanedione | C8H15O2+ | O30 | 0.998 |
| Acetaldehyde | C2H5O+ | O5 | 1.000 | Ethyl 2- methylbutanoate ((Ethyl 2-methylbutyrate) | C7H15O2+ | O28 | 0.997 |
| c8 aldehydes and ketones | C8H17O+ | T13 | 0.998 | 2-Methylbutanal | C5H11O+ | O21 | 0.997 |
| Diethanol sulfide | C4H11O2S+ | S23 | −1.000 | Pyridine | C5H6N+ | O19 | −0.997 |
| Acrylic Acid | C3H5O2+ | O14 | −1.000 |
The selection of significant compounds was done based on their correlation coefficients (α = 0.05) and sorted by Pearson correlation coefficient.