875

Glycosidic linkage

Hemicellulose

[26]

930

Glycosidic linkage

Cellulose, Hemicellulose, Lignin

990

C-O valence vibration

Cellulose

1035

C-O, C = C, C-C-O vibrational stretching

Cellulose, Hemicellulose, Lignin

1160

C-O-C asymmetrical stretching

Cellulose, Hemicellulose

1215

C-C + C-O stretching

Lignin

[33]

1327

C-O of syringyl ring

Lignin

1335

C-H bending, O-H in-plane bending

Cellulose, Hemicellulose, Lignin

1380

C-H bending

Cellulose, Hemicellulose, Lignin

1440

O-H in-plane bending

Cellulose, Hemicellulose, Lignin

[35]

1595

Aromatic ring C = C vibration

Lignin

3343

-OH stretching

Cellulose, Hemicellulose, Lignin