Table 1.
The ROAV values of the main volatile compounds by GC-MS.
| No. | Volatile Compounds | Odor Description # | Threshold ψ (μg/L) | CK | APYA | APYB | APYC | APYD |
|---|---|---|---|---|---|---|---|---|
| 1 | Nonanal | Floral, green | 3.1 | 100 | 100 | 100 | 100 | 100 |
| 2 | 2-methyl-1-propanol | Wine | 33 | 18.14 | 0.90 | 27.23 | 26.45 | <0.01 |
| 3 | 3-methyl-1-butanol | Cocoa, floral | 6.1 | 10.01 | 65.29 | <0.01 | 60.68 | 86.67 |
| 4 | Ethanol | Alcohol, floral | 620 | 5.17 | 0.9 | 2.26 | 1.76 | 1.39 |
| 5 | 1-Pentanol | Fruit, green | 153 | <0.01 | 2.61 | 4.78 | 3.16 | <0.01 |
| 6 | Phenylethyl alcohol | Floral, fruit | 21 | <0.01 | 4.92 | <0.01 | 15.57 | <0.01 |
| 7 | Eucalyptol | Camphor, cool | 5.08 | <0.01 | <0.01 | 21.60 | <0.01 | 47.57 |
| 8 | 2-methyl-butanal | Almond, cocoa | 1 | 93.89 | <0.01 | <0.01 | <0.01 | <0.01 |
| 9 | Benzeneacetaldehyde | Berry, floral, flower | 1.7 | <0.01 | <0.01 | 92.86 | <0.01 | <0.01 |
| 10 | Octanal | Fruity | 170 | <0.01 | <0.01 | 3.88 | <0.01 | <0.01 |
| 11 | Ethyl butyrate | Apple, banana | 126.1 | 2.80 | 0.23 | 5.99 | <0.01 | <0.01 |
| 12 | Ethyl isobutyrate | Apple, floral | 0.11 | 57.87 | 67.13 | <0.01 | 80.70 | <0.01 |
| 13 | Butyl acrylate | — | 10 | 25.48 | 0.94 | 7.11 | 6.64 | 65.54 |
| 14 | Isoamyl acetate | Apple, banana, fruit | 91.8 | <0.01 | 3.87 | <0.01 | <0.01 | <0.01 |
| 15 | 2-Phenylethyl formate | Rose, green | 270 | <0.01 | <0.01 | <0.01 | 1.08 | 0.35 |
| 16 | Acetoin | Butter, cream | 14 | <0.01 | <0.01 | <0.01 | 8.38 | <0.01 |
| 17 | Terpinolene | Pine, plastic, sweet | 200 | 1.54 | <0.01 | <0.01 | <0.01 | <0.01 |
| 18 | β-pinene | Pine, polish | 140 | 2.62 | <0.01 | <0.01 | <0.01 | <0.01 |
| 19 | α-Phellandrene | Citrus, mint, pepper | 40 | 6.08 | <0.01 | <0.01 | <0.01 | 9.26 |
| 20 | Limonene | Citrus, fruit | 210 | 1.63 | <0.01 | 0.53 | <0.01 | <0.01 |
| 21 | Anethole | Anise, sweet | 57 | <0.01 | 1.98 | 1.72 | <0.01 | <0.01 |
| 22 | D-Limonene | Citrus, lemon | 45 | <0.01 | <0.01 | <0.01 | 1.75 | <0.01 |
| 23 | Estragole | Anise, herb | 16 | 4.51 | <0.01 | <0.01 | 10.75 | 29.50 |
| 24 | N-propylbenzene | Mothball | 19 | <0.01 | 1.19 | <0.01 | 2.70 | <0.01 |
| 25 | Palmitic acid ethyl ester | Fatty, fruity, rancid | 2000 | <0.01 | <0.01 | <0.01 | <0.01 | 1.17 |
# CK, APYA, APYB, APYC, and APYD represent YB4 treated with 0%, 6%, 9%, 12%, and 15% NaCl. The odor description was derived from the literature (Flavornet, the odor database). ψ, All odor thresholds were acquired from Odor and Flavor Detection Thresholds in Water (expressed in parts per billion, mg/L). —, no odor description information was found in the literature.