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. 2019 Nov 20;11(12):1913. doi: 10.3390/polym11121913

Figure 5.

Figure 5

Influence of the different EtOH/H2O on the mild organosolv extraction * (0.18 M H2SO4, 120 °C, 5 h) on (A) extraction efficiency (corrected for alcohol incorporation as determined by 2D HSQC) and (B) total β-O-4 content as determined by 2D HSQC. * The 50:50 EtOH/H2O experiment was stopped after 4 h due to the reactor clogging.