Evaluating polymer interplay after hot water pretreatment to investigate maize stem internode recalcitrance

Table 4 Lignin characteristics: thioacidolysis yield, S/G ratio and fluorescence intensity

	Raw maize stem		20-min HWP		40-min HWP
	M7	M9	M7	M9	M7	M9
Thioacidolysis yield (µmol g⁻¹ KL)	765 (± 23)	671 (± 43)	799 (± 11)	884 (± 12)	321 (± 33)	266 (± 8)
S/G ratio	1.79 (± 0.02)	1.02 (± 0.03)	1.96 (± 0.14)	0.99 (± 0.01)	2.87 (± 0.10)	1.35 (± 0.10)
Fluorescence intensity	8100	5500	4700	2600	1700	1200

Thioacidolysis yields are expressed in µmol g⁻¹.Klason Lignin. Syringyl/Guaiacyl molar ratios (S/G ratio) were determined by thioacidolysis. Fluorescence intensity was measured at λ_excitation = 365 nm and λ_emission = 440 nm. Results are expressed as means of three repetitions with standard deviation in brackets

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