Fig. 5. Hydroxyl group content of all fractions and the RCF oil (Foil) quantified by 31P-NMR and expressed as mmol per gram oil. Measurements were performed in triplicate. Unsubstituted G are guaiacyl units without substitution at position 5 of the aromatic ring, 5-substituted G is the sum of β-5, 5-5 and 4-O-5 substitution on the aromatic G ring. More detailed information on 31P-NMR can be found in Table S9.†.
