Table 2.
The location of the maxima of absorption bands FTIR with arrangement of appropriate vibrations selected for maltodextrin (MD), skim milk powder (MP), and multifloral honey (H) made in terms of spectral 3900–700 cm−1.
| Type and Origin of Vibrations | FTIR Position of Bands (cm−1) | ||
|---|---|---|---|
| MD | MP | H | |
| ν(O–H) in H2O | 3291 | 3285 | 3281 |
| ν(C–H) or/and ν(NH3) of free amino acids δ (O–H) from H2O |
2927 2892 |
2927 2872 |
2937 2886 |
| ν(C–O) from carbohydrate | 1742 | 1739 | 1740 |
| δ (O–H) from H2O | 1645 | 1643 | 1642 |
| δ (N–H) from amid II | 1546 | ||
| δ (O–CH) and δ (C–C–H) | 1453 | 1449 | 1450 |
| δ (O–H) in C–OH group + δ (C–H) in the alkenes | 1417 | 1419 | 1420 |
| δ (–OH) in C–OH group | 1363 | 1366 | 1366 |
| ν(C–H) in carbohydrates or/and ν(C–O) in carbohydrates | 1257 1230 |
1254 1229 |
1257 1229 |
| ν(C–H) in carbohydrates or/and ν(C–O) in carbohydrates | 1148 | 1148 | 1148 |
| ν(C–O) in C–O–C group | 1104 1076 |
1114 1066 |
1101 1076 |
| ν(C–O) in C–OH group or ν (C–C) in the carbohydrate structure | 1013 992 |
1020 992 |
1027 980 |
| δ (C–H) | 925 | 915 | 916 |
| Anomeric region of carbohydrates or δ (C–H) | 896 862 846 819 |
883 875 852 821 |
895 864 817 |