|
No
|
Compounda
|
Odour note
|
Fractionb
|
DB5
|
FFAP
|
FD boiled
|
FD raw
|
|---|
|
1
|
Acetoin
|
Buttery
|
NBF
|
nd
|
1275
|
4
|
4
|
|
2
|
Acetic acid
|
Vinegar-like
|
AF
|
635
|
1450
|
4
|
4
|
|
3
|
2-Methylbutanal
|
Malty
|
NBF
|
663
|
912
|
16
|
nd
|
|
4
|
2,3-Pentanedione
|
Caramel
|
NBF
|
696
|
1054
|
4
|
2
|
|
5
|
Butanoic acid
|
Sweaty, cheesy
|
AF
|
835
|
1619
|
4
|
4
|
|
6
|
2-Methylpyrazine
|
Popcorn
|
NBF
|
820
|
nd
|
8
|
nd
|
|
7
|
2,5-Dimethylpyrazine
|
Nutty, roasty
|
NBF
|
906
|
nd
|
8
|
nd
|
|
8
|
Benzaldehyde
|
Almond-like
|
NBF
|
963
|
1524
|
16
|
8
|
|
9
|
1-Octen-3-one
|
Mushroom
|
NBF
|
977
|
1295
|
32
|
32
|
|
10
|
Octanal
|
Citrus
|
NBF
|
1006
|
1276
|
16
|
8
|
|
11
|
2-Acetylthiazole
|
Roasty, earthy
|
NBF
|
1020
|
1624
|
64
|
nd
|
|
12
|
2-Acetylpyridine
|
Popcorn
|
NBF
|
1031
|
1551
|
128
|
nd
|
|
13
|
3-Hydroxy-4,5-dimethyl-2(5H) furanone (Sotolon)
|
Seasoning
|
AF
|
1107
|
2200
|
16
|
nd
|
|
14
|
β-ionone
|
Floral
|
NBF
|
1457
|
1959
|
4
|
8
|
|
15
|
β-iso-methyl ionone
|
Floral
|
NBF
|
1534
|
nd
|
4
|
8
|
|
16
|
Octadecanal
|
Fatty
|
NBF
|
1818
|
2179
|
8
|
4
|
|
17
|
Hexadecanoic acid
|
Waxy
|
AF
|
1984
|
2940
|
4
|
4
|
|
18
|
Octadecanoic acid
|
Mild fatty
|
AF
|
2178
|
nd
|
4
|
4
|
|
19
|
9,12-Octadecadienoic acid (Z,Z)
|
Faint fatty
|
AF
|
2183
|
nd
|
4
|
4
|
- AF acidic fraction, NBF neutral and basic fraction, FD flavour dilution
- a Compounds were identified by comparing their retention indices on DB-5 and FFAP columns, mass spectra, and their aroma impressions were compared with the respective reference compounds
- b Fractions in which the odorants were detected by GC–O after fractionation
