Table 2. Aromatic units, p-coumarates and ferulates from Integration of ¹H–¹³C correlation signals in the HSQC spectra of the GEL sample.

	RB867515 (RB)			S.spontaneum (AG)
	IN2	IN5	IN9	IN2	IN5	IN9
Lignin aromatic units a
H (%)	64.5 b	13.1	7.6	74.8 b	7.0	6.3
G (%)	22.0	46.9	39.4	16.3	59.0	55.6
S (%)	13.5	40.0	52.9	8.9	34.1	38.1
S/G ratio	0.6	0.9	1.3	0.5	0.6	0.7
p-Hydroxycinnamates c
p-Coumarate (%)	27.6	91.0	109.9	20.9	65.3	49.7
Ferulate (%)	47.7	71.8	65.4	33.6	33.9	22.4
Ferulate/p-coumarate ratio	1.7	0.8	0.6	1.6	0.5	0.5
S/Ferulates ratio	0.3	0.6	0.8	0.3	1.0	1.7
S/p-Coumarate ratio	0.5	0.4	0.5	0.4	0.5	0.8

^aMolar percentages (H+G+S = 100)

^bOverestimated due to the presence of proteins

^cMolar content as percentage of lignin content (H+G+S = 100)