Table 3.
Linear retention indices (LRI) and odour description of volatile compounds identified in Cabernet Sauvignon wine variety and retentates obtained by reverse osmosis and nanofiltration at 2.5, 3.5, 4.5 and 5.5 MPa with and without cooling.
| Compound | LRI | Odour | Compound | LRI | Odour |
|---|---|---|---|---|---|
| Acids | Esters | ||||
| Acetic acid | 622 | vinegar | Ethyl hexanoate | 997 | fruity |
| Octanoic acid | 1199 | fatty | Ethyl 4-hydroxybutanoate | 1060 | caramellic |
| Nonanoic acid | 1265 | fatty | Diethyl succinate | 1179 | fruity |
| Decanoic acid | 1376 | fatty | Ethyl octanoate | 1191 | fruity |
| Lauric acid | 1556 | fatty | Ethyl hydrogen succinate | 1198 | faint |
| Myristic acid | 1749 | fatty | Phenethyl acetate | 1248 | floral |
| Palmitic acid | 2004 | fatty | Ethyl decanoate | 1391 | fruity |
| Alcohols | Ethyl vanillate | 1580 | smoky | ||
| Isoamyl alcohol | 734 | fruity | Ethyl laurate | 1584 | fatty |
| 1-butanol | 752 | fusel oil | Hexyl salicylate | 1667 | green |
| 2,3-butanediol | 804 | fruity | Ethyl myristate | 1778 | fatty |
| 1-hexanol | 868 | green | Diisobutyl phthalate | 1859 | faint |
| Methionol | 981 | sulphurous | Ethyl pentadecanoate | 1880 | honey |
| Benzyl alcohol | 1037 | fruity | Methyl palmitate | 1907 | fatty |
| 1-octanol | 1071 | green | Dibutyl phthalate | 1953 | faint |
| 2-phenylethanol | 1103 | floral | Ethyl palmitate | 1978 | fatty |
| Dodecanol | 1469 | fatty | Ethyl linoleate | 2146 | fatty |
| Carbonyl compounds | Ethyl oleate | 2152 | fatty | ||
| 4-propylbenzaldehyde | 1261 | faint | Ethyl stearate | 2176 | fatty |
| Geranyl acetone | 1448 | floral | Volatile phenols | ||
| Lily aldehyde | 1517 | floral | 4-ethylphenol | 1166 | smoky |
| Hexyl cinnamaldehyde | 1738 | floral | 4-ethylguaiacol | 1268 | smoky |
| Terpenes | 2,4-Di-T-butylphenol | 1501 | faint | ||
| α-terpinolene | 1092 | citrus | |||
| Nerol | 1218 | citrus | |||
| β-citronellol | 1223 | citrus | |||
| β-damascenone | 1377 | fruity | |||
| Phenanthrene | 1772 | faint |