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Official Journal of the Japan Wood Research Society

Fig. 4 | Journal of Wood Science

Fig. 4

From: Natural durability of the culturally and historically important timber: Erythrophleum fordii wood against white-rot fungi

Fig. 4

2D HSQC NMR experiments in the solution state of: a nondegraded E. fordii wood; b E. fordii wood degraded by P. chrysosporium; and c E. fordii wood degraded by P. sordida; d nondegraded beech wood; e beech wood degraded by P. chrysosporium; and f beech wood degraded by P. sordida. The main lignin structures identified are also shown: A β-O-4′ substructure; B resinol substructure; C phenylcoumaran substructure; D spirodienone substructure; G guaiacyl unit; G’ Cα-oxidized G unit; S syringyl unit; S′ Cα-oxidized S unit (R, lignin or OH; R′, H or lignin). See Table 1 for signal assignment

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