Table 1 List of all identified odorants in the sample by means of GC-O and their characteristics.
No. | Odorant | Odour qualitya | Ri valueb on | FD-factorc on | Identified by | ||
---|---|---|---|---|---|---|---|
DB-FFAP | DB-5 | DB-FFAP | DB-5 | ||||
1 | (E)-Non-2-enal | fatty | 1521 | 1156 | ≥729 | 81 | d |
2 | (E)-Oct-2-enal | fatty, peanut-like | — | 1058 | — | 27 | i |
3 | (E,E)-Deca-2,4-dienal | fatty, peanut-like | 1808 | — | ≥729 | — | i |
4 | (E,E)-Nona-2,4-dienal | fatty, peanut-like | 1686 | 1212 | ≥729 | ≥729 | d |
5 | (E,E)-Nona-2,6-dienal | cucumber-like, green | — | 1153 | — | 81 | i |
6 | (E,E)-Octa-2,4-dienal | cucumber-like | 1579 | 1100 | 81 | 81 | h |
7 | (E,Z)-Nona-2,4-dienal | fatty, cucumber-like | 1657 | 1189 | 243 | 27 | h |
8 | (Z)-Non-2-enal | green | 1493 | — | 27 | — | i |
9 | 1,2-Dimethylnaphthalene | naphthalene-like | 2042 | 1453 | ≥729 | 243 | d, e |
10 | 1,4-Dimethylnaphthalene | naphthalene-like | — | 1457 | n.d. | n.d. | g |
11 | 1,5-Dimethylnaphthalene | naphthalene-like | 2017 | — | n.d. | n.d. | f |
12 | 1,6-Dimethylnaphthalene | naphthalene-like | — | 1440 | n.d. | n.d. | g |
13 | 1,7-Dimethylnaphthalene | naphthalene-like | 1978 | — | n.d. | n.d. | f |
14 | 1-Methylnaphthalene | naphthalene-like | 1869 | 1306 | ≥729 | 27 | e |
15 | 2,3,5-Trimethylnaphthalene | naphthalene-like, leather-like | 2155 | — | 9 | — | d |
16 | 2,6-/2,7-Dimethylnaphthalene | anise-like | 1948 | 1420 | n.d. | n.d. | f, g |
17 | 2-/3-Methylbutanoic acid | cheesy | — | 863 | — | 9 | i |
18 | 2-Methylnaphthalene | naphthalene-like | 1831 | 1294 | ≥729 | 243 | e |
19 | 3-Ethylphenol | phenolic, leather-like | 2173 | — | ≥729 | — | d |
20 | 3-Methylisoquinoline | sweet, portable toilet-like | 1975 | 1325 | 243 | ≥729 | d |
21 | Acetophenone | almond-like, solvent-like | 1643 | 1076 | 81 | 9 | h |
22 | Benzothiazole | car tire-like | 1917 | 1221 | 9 | 81 | h |
23 | Butanoic acid | cheesy | 1629 | — | 27 | — | i |
24 | Dodecanoic acid | fatty, fishy | 2470 | 1573 | 81 | 81 | h |
25 | Hex-1-en-3-one | glue-like | — | <800 | — | 27 | i |
26 | Hexanal | cut grass-like, tomato-like, green | 1077 | 806 | 81 | 81 | h |
27 | Naphthalene | mouldy, naphthalene-like | 1719 | 1183 | 243 | ≥729 | e |
28 | Nonanal | green, grassy | 1381 | 1111 | 81 | 9 | h |
29 | Oct-1-en-3-one | mushroom-like | 1288 | 979 | 27 | 27 | h |
30 | Octanal | cucumber-like, green | 1276 | 1000 | 9 | 27 | h |
31 | p-Cresol | horse stable-like | 2075 | 1087 | 243 | 81 | d |
32 | Phenylacetic acid | honey-like | 2550 | — | 81 | — | i |
33 | Raspberry ketone | sweet, berry-like | 2973 | 1560 | ≥729 | ≥729 | h |
34 | Rotundone | pepper-like | 2245 | 1715 | ≥729 | ≥729 | h |
35 | Sotolone | spicy | 2191 | 1117 | ≥729 | 27 | h |
36 | trans-4,5-Epoxy-(E)-dec-2-enal | sweet, metallic | 1942 | 1381 | 81 | ≥729 | d |
37 | Vanillin | vanilla-like | 2560 | 1400 | ≥729 | ≥729 | d |
38 | γ-Octalactone | sweet, coconut-like | — | 1265 | — | 81 | i |