. 2022 Nov 24;4(12):9388–9398. doi: 10.1021/acsapm.2c01665

Table 2. Hydroxyl Content of the Different Samples in mmol/g Measured by ³¹P NMR.

fraction	aliphatic	5-subst^b/S	G	H^a	–COOH	S/G/H	total phenolic	total
IEL	2.69	2.04/1.04	1.11	0.40	0.27	1/1.07/0.38	3.55	6.51
IFL	0.91	1.38/0.53	0.55	0.27	0.22	1/1.04/0.51	2.20	3.33
IML	1.78	1.36/0.67	0.72	0.31	0.18	1/1.07/0.46	2.39	4.35
IBL	2.40	1.05/0.67	0.59	0.22	0.03	1/0.88/0.33	1.86	4.29

Terminal p-benzoic acid esters; IEL 11.3%, IFL 12.3%, IML 13.0%, IBL 11.8% of total phenolic OHs.

Total 5-substituted, includes syringyl phenols.

Table 2. Hydroxyl Content of the Different Samples in mmol/g Measured by 31P NMR.