Table 4 FTIR spectral data for Suaeda fruticosa (SF) with corresponding peak assignment
Substrate | Peaks | Description |
|---|---|---|
Untreated | 1420 | C-H deformation |
1600–1690 | aromatic skeletal vibration in lignin | |
1511 | functional group in lignin | |
2800–3000 | asymmetric, symmetric methyl and methylene CH cellulose group | |
3430–3443 | characteristics of OH group in lignin | |
3000–3700 | hydrogen bonded (O–H) stretching | |
Pretreated | 1312–1315 | OH stretching in cellulose |
1690 | C = O stretching | |
1727 | C = O stretching | |
| Â | 1500 | syringyl ring |
Saccharified with purified xylanase | 1031 | C-H deformation of secondary alcohols and aliphatic ethersaromatic C-H deformation |
1312 | recognized as hemicellulose | |
1608 | COO-stretching in hemicellulose | |
Saccharified with crude xylanase | 892 | aromatic vibration at β-glycosidic linkage in hemicellulose |
1312–1315 | OH stretching in cellulose |