Table 5.
Theoretical interpretation of the IR spectra of the C. vulgaris and A. platensis lipid complexes.
| No. | C. vulgaris | A. platensis | Theoretical Interpretation |
|---|---|---|---|
| Wavenumber, cm−1 | |||
| 1 | 665 | - | Deformation vibration of the hydroxyl group |
| 2 | 760 | 760 | Out of plane vibrations of C–H bonds of unsaturated fragments and pendulum vibrations of CH2 |
| 3 | 870 | - | Vibrations of molecules in the C=CH2 group |
| 4 | 965 | - | Stretching vibration of C–C bonds between carbons of CH2 groups and carbons related to unsaturated bonds |
| 5 | 1065 | 1070 | Stretching vibrations of C–C bonds of chains; C–O–P stretching vibrations |
| 6 | 1095 | 1090 | Deformation vibrations (angular) of glycerol crosslink |
| 7 | 1185 | 1183 | Stretching vibrations of C–O glycerol crosslink |
| 8 | 1225 | 1224 | Wagging vibrations of CH2 groups |
| 9 | 1283 | 1258 | Deformation vibrations –C–O– bonds |
| 10 | 1350 | - | Deformation vibrations of CH3 groups |
| 11 | - | 1450 | Scissoring vibrations of CH2 groups |
| 12 | 1448 | - | Deformation vibrations of C–H |
| 13 | 1474 | 1450 | Scissoring vibrations of CH2 groups |
| 14 | 1523 | 1515 | Conjugation of two or more –C=C– bonds vibrations of the hydrated carboxyl group |
| 15 | 1630 | 1648 | Stretching vibrations of C=C bonds |
| 16 | 2910 | 2900 | Stretching C–H vibrations of CH2 groups |
| 17 | 3400 | 3400 | Stretching vibrations of the hydroxyl group |