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Table 4 MIR vibrational mode regions identified from regression coefficient plots and spectral assignments corresponding to lignin and/or lignin monomers

From: High-throughput prediction of eucalypt lignin syringyl/guaiacyl content using multivariate analysis: a comparison between mid-infrared, near-infrared, and Raman spectroscopies for model development

Vibrational mode from regression coefficients plot S/G/H vibrational mode and spectral assignment
788-790 784 (G) [37]
808-836 813 (G) [37]
827 (S) [38]
854-883 863, 878 (G) [37]
912-917 914 (G) [37]
1137-1168 1142 (G) [39]
1151 (G) [40]
1205-1263 1215 (Lignin) [40]
1226 (G), 1252 [39]
1270-1299 1270 (G) [39]
1269 (G) [40]
1319-1425 1425 (S) [38]
1330, 1425 (S), 1379, 1428 (Lignin) [39]
1327 (G), 1425, 1427 [40]
1442-1502 1500 (S) [38]
1465 (Lignin) [39]
1462, 1463 [40]
1508-1521 1506-1513 [39]
1513, 1514 [40]
1585-1606 1589 (S) [38]
1596–1600 (Lignin) [39]
1594, 1603 [40]
1610-1612 1610 [41]
1698-1714 1704 [40]
1745-1756 1733-1753 [42]
  1. G = guaiacyl, S = syringyl.