Peak positions

(Wavenumber (cm⁻¹))

Corresponding chemical

functional group

References

3328

OH stretching vibration of polysaccharides and water hydration

[9] [19] [29]

2919

CH and CH₂ Stretching and vibrating of cellulose and hemicellulose

[19] [30]

1730

Ester or carboxylic acid (C=O) symetric stretching vibration of Xylanes and/or lignin

[20] [21]

1506

(C=C) stretching and vibrating of lignin

[21] [31]

1422

CH₂ symetric stretching and bending of cellulose

[7] [31]

1236

Acetyl group (-COO) of hemicellulose

[4]

1007

(C-OH) Vibration and deformation of lignin

[31]

898

C-O group of monosaccharides

[4] [20] [31]