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Modification of lignin in aspen wood powder by DyP2. Reactions were performed at 40°C. Lignin modification metrics, G/Ar, S/Ar, P/NP, and L/(L+PS) ratios are presented, from left to right. Data are based on six ToF-SIMS spectra of each treatment (n=6); ANOVA analysis with Tukey’s post-test: **p<0.005; ***p<0.0001, compared to the no-enzyme control.
