Table 2.
The positioning of FTIR absorption maxima of the wine samples together with assignment of their corresponding functional groups.
| Type and Origin of Vibrations | André Wine | Cabernet Moravia Wine | Hibernal Wine | Sauvignon Wine |
|---|---|---|---|---|
| ν(O-H) in water and hydroxylated molecules (alcohols and phenols) |
3304 | 3302 | 3303 | 3303 |
| νw(-CH) of hydrocarbons | 2932 | 2934 | 2933 | 2934 |
| νm(-CH3) of hydrocarbons | 2879 | 2879 | 2882 | 2882 |
| νm(-C=O) | 1715 | 1715 | 1714 | 1714 |
| δ(-OH) and ν(C=C) | 1602 | 1600 | 1603 | 1605 |
| ν(C=C) and ν(C-N) | 1516 | 1516 | 1514 | 1514 |
| ν(C=C) δ(-CH3) | 1448 | 1449 | 1451 | 1451 |
| δm(-CH2) and δ (-CH) | 1404 | 1405 | 1397 | 1399 |
| ν(C=C), δ (-CH2) | 1335 | 1330 | 1332 | 1332 |
| δ (-CH2) | 1265 | 1265 | 1270 | 1267 |
| νm(-C-O) and δm(-CH2) | 1220 | 1224 | 1217 | 1215 |
| νst(-C-O) and νw (-OH) second overtones | 1101 | 1102 | 1097 | 1100 |
| νm(-C-O) | 1033 989 |
1034 992 |
1033 989 |
1033 991 |
| δw(-HC=CH-, trans-) out-of-plane) | 923 | 917 | 917 | 921 |
| δ(-CH2-) and -HC=CH-(cis-) scissor | 851 | 849 | 847 | 852 |