Table 2.
Code | Compound | LRIexpta | Odour description | Intensityb |
|||
---|---|---|---|---|---|---|---|
iLSL | mLSL | iMSL | mMSL | ||||
1 | ethyl propanoate | 713 | fruity, over-ripe | - | - | - | 9 |
2 | propyl acetate | 715 | pungent, sweet fruit | - | - | - | 12 |
3 | ethyl 2-methylpropanoate | 759 | fruity, pineapple | - | 10 | 6 | 12 |
4 | methyl 2-methylbutanoate | 778 | fruity, pineapple | 9 | 11 | 9 | 11 |
5 | hexanal | 805 | green, grass | 4 | 9 | 7 | 6 |
6 | ethyl butanoate | 806 | sweet fruity, fake sweets | - | - | - | 10 |
7 | ethyl 2-methylbutanoate | 849 | fruity sweet, pineapple | 8 | 11 | 8 | 13 |
8 | (Z)-3-hexen-1-ol | 856 | fresh-cut grass | - | - | - | 5 |
9 | 1-hexanol | 870 | herbaceous | - | - | - | 5 |
10 | (Z)-4-heptenal | 902 | lamb fat, cheesy | - | - | 11 | - |
11 | butyl propanoate | 911 | ripe banana | - | - | - | 4 |
12 | S-methyl 2-methylbutanethioate | 940 | sulphury | - | - | 5 | 3 |
13 | dimethyl trisulfide | 972 | pickled onions, cabbage | 10 | 13 | 9 | 13 |
14 | ethyl (methylthio)acetate | 985 | earthy, slightly cucumber | - | - | - | 5 |
15 | eucalyptol | 1032 | pine | - | - | - | 3 |
16 | ethyl 3-(methylthio)propanoate | 1102 | cardboard, slightly green | - | - | - | 4 |
17 | (Z)-6-nonenal | 1110 | cucumber | 10 | - | 12 | - |
18 | 3,6-nonadien-1-ol | 1164 | rags, dry | 8 | 5 | 4 | 3 |
Linear retention index on DB-5 column, calculated from a linear equation between each pair of straight chain n-alkanes C6-C25.
The sum of intensities recorded by two assessors for each sample (scoring scale: weak = 3, medium = 5, strong = 7), − = not detected.