Table 1 FTIR frequencies of measured range and their peak assignment.
Position [cm −1 ] | Assignment |
|---|---|
1650 | Amide I: C=O stretching of the peptide back bone |
1540 | Amide II: N-H bending coupled to C-N stretching |
1453 | Asymmetric and symmetric C-H bending from CH2 and CH3 on proteins |
1398 | C=O vibrations of COO− from free fatty acids, free amino acids and polypeptides |
1324 | Amide III from proteins |
1078 | Symmetric stretching of P-O from nucleic acids and phospholipids; C-H or C-OH vibrations from saccharides. |
1033 | C-O or C-OH vibrations from glucose, polysaccharides |
926 | C-O or C-OH vibrations from carbohydrates |
