Table 3.
Volatile alcohols and esters present in the fermentation media at day 5 of fermentation
| Day5 | Threshold | Odor | VIN13 | EC1118 | BM45 | 285 | DV10 |
| Ethyl Acetate | 12 | Apple, Pineapple, fruity, solvent, balsamic | 15.8 ± 4.43 | 16.923 ± 4.22 | 14.37 ± 1.49 | 14.54 ± 1.9 | 23.87 ± 2.21 |
| Methanol | 15.80 ± 4.49 | 36.13 ± 6.26 | 0 ± 0.00 | 29.89 ± 34.7 | 34.42 ± 16.84 | ||
| Propanol | 306 | Alcohol, ripe fruit, stupefying | 77.11 ± 20.23 | 55.58 ± 7.76 | 31.67 ± 6.38 | 35.19 ± 7.65 | 58.1 ± 5.38 |
| Isobutanol | 74 | Alcohol, nail polish | 8.96 ± 2.15 | 11.98 ± 0.63 | 13.57 ± 1.60 | 11.54 ± 0.85 | 11.66 ± 0.60 |
| Isoamyl Acetate | 60 | Solvent marzipan, malt | 0.11 ± 0.04 | 0.09 ± 0.01 | 0.07 ± 0.01 | 0.07 ± 0.01 | 0.10 ± 0.01 |
| Butanol | 50 | Medicinal, wine-like | 0.95 ± 0.11 | 0.89 ± 0.05 | 0.7 ± 0.06 | 0.77 ± 0.05 | 0.98 ± 0.02 |
| Isoamyl alcohol | 57.02 ± 10.92 | 61.46 ± 6.52 | 51.46 ± 5.98 | 49.32 ± 3.95 | 67.15 ± 8.09 | ||
| Hexyl acetate | 0.67 | Apple, cherry, pear, floral | 0.01 ± 0.02 | 0.16 ± 0.01 | 0.1 ± 0.01 | 0.04 ± 0.01 | 0.16 ± 0.01 |
| Ethyl Lactate | 150 | Fruity, buttery | 4.33 ± 0.14 | 4.24 ± 0.12 | bd | bd | 4.48 ± 0.06 |
| Ethyl Caprylate | 0.58 | sweet pear banana | 0.08 ± 0.02 | 0.11 ± 0.02 | 0.07 ± 0.01 | 0.07 ± 0.00 | 0.09 ± 0.01 |
| Acetic Acid | Vinegar | 1306.24 ± 74.24 | 879.5 ± 22.00 | 1000.58 ± 27.72 | 703.33 ± 43.78 | 1105.93 ± 24.80 | |
| Propionic Acid | 2.18 ± 0.35 | 2.32 ± 0.28 | 2.15 ± 0.29 | 2.01 ± 0.22 | 2.52 ± 0.19 | ||
| Iso-Butyric Acid | 8.1 | rancid butter cheese | 0.58 ± 0.12 | 0.58 ± 0.04 | 0.59 ± 0.04 | 0.54 ± 0.04 | 0.76 ± 0.04 |
| Butyric Acid | 2.2 | rancid cheese, sweet | 1.97 ± 0.41 | 2.50 ± 0.15 | 1.53 ± 0.30 | 1.57 ± 0.31 | 2.77 ± 0.62 |
| Ethyl Caprate | 0.5 | brandy fruity grape floral | 0.25 ± 0.05 | 0.32 ± 0.03 | 0.18 ± 0.03 | 0.2 ± 0.02 | 0.33 ± 0.05 |
| Iso-Valeric Acid | 0.7 | rancid cheese putrid | 0.59 ± 0.11 | 0.62 ± 0.04 | 0.53 ± 0.08 | 0.54 ± 0.16 | 0.66 ± 0.05 |
| Diethyl Succinate | 1.2 | Fruity, melon | bd | bd | bd | bd | bd |
| Valeric Acid | SWEATY | 0.57 ± 0.25 | 0.38 ± 0.07 | 0.23 ± 0.02 | 0.26 ± 0.03 | 0.39 ± 0.03 | |
| 2-Phenylethyl Acetate | 1.8 | rosy honey fruity | 0.33 ± 0.03 | 0.63 ± 0.02 | 0.35 ± 0.02 | 0.32 ± 0.03 | 0.68 ± 0.05 |
| 2-Phenyl Ethanol | 200 | Rose, honey | 12.71 ± 2.47 | 14.98 ± 0.58 | 16.35 ± 1.68 | 17.21 ± 0.83 | 16.33 ± 0.87 |
| Octanoic Acid | 10 | Fatty, rancid, oily, soapy faint fruity | 0.95 ± 0.2 | 1.43 ± 0.05 | 0.9 ± 0.08 | 0.88 ± 0.09 | 1.59 ± 0.09 |
| Decanoic Acid | 6 | Fatty, rancid | 1.5 ± 0.41 | 2.86 ± 0.38 | 1.32 ± 0.15 | 1.42 ± 0.13 | 3.01 ± 0.22 |
* Values are expressed as mg.L-1 and are the average of 4 biological repeats ± standard deviation. Metabolites present at concentrations below the detection limit are indicated by "bd".