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

Table 6 NIR vibrational modes identified from regression coefficient plots and spectral assignments corresponding to lignin and/or lignin monomers

Vibrational mode from regression coefficients plot	Lignin vibrational mode
4400-4586	4411 [45]
	4546 [46]
	4686 [47]
5581-5600	5583 [45]
5959-6009	5963, 5978 [45]
5959-6009	5974, 5978, 5980 [46]
7081-7197	7092 [48]
8459-8674	8547 [46]
8720-8801	8749 [49]

ISSN: 2731-3654