BioMed Research International / 2016 / Article / Tab 2

Research Article

Structural Changes of Lignin after Liquid Hot Water Pretreatment and Its Effect on the Enzymatic Hydrolysis

Table 2

Assignments of characteristic peaks in FTIR spectrogram.

Wavenumber (cm−1)Assignments of characteristic peaks

2937C-H stretching vibrations in methyl and methylene
1597Stretching vibrations of aromatic skeleton and C=O
1514Vibrations of aromatic skeleton
1463C-H deformations in methyl
1427Plane deformation of C-H in aromatic skeleton
1271Stretching vibrations of guaiacyl ring and C=O
1217Stretching vibrations of C-C, C-O, and C=O
1032Plane deformations of aromatic C-H, C-O deformations in primary alcohols, and C=O stretching vibrations
856C-H vibrations in the positions of 2, 5, and 6 out of the plane of guaiacyl units

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