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Fig. 5 | Biotechnology for Biofuels

Fig. 5

From: Valorization of lignin and cellulose in acid-steam-exploded corn stover by a moderate alkaline ethanol post-treatment based on an integrated biorefinery concept

Fig. 5

2D 13C-1H correlation (HSQC) spectra of AL and purified EHR (a Aliphatic region of AL; b Aromatic region of AL; c Aliphatic region of purified EHR; d Aromatic region of purified EHR. Key structural details of lignin: (A) β-O-4′ aryl ether linkages; (H) p-hydroxyphenyl units; (G) guaiacyl units; (S) syringyl units; (PCE) p-coumarates; (FA) ferulates; (X) β-d-Xylp)

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