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. 2021 Jul 2;12:679966. doi: 10.3389/fpls.2021.679966

FIGURE 6.

FIGURE 6

Mean percentage (%) composition of alcohol insoluble residues (AIR) prepared from previously pretreated biomass from Arundo donax, Cortaderia selloana, Phragmites australis and Miscanthus × giganteus (no results are shown for M. × giganteus leaves due to sample losses). Pretreatment acronyms: NP, non-pretreated control samples (incubated only with water; striped bars); WRF, samples pretreated only with Pleurotus ostreatus; ALK, samples pretreated only with 0.1 M NaOH for 24 h at 21°C; W + K, samples pretreated with P. ostreatus followed by 0.1 M NaOH for 24 h at 21°C. Ara/Xyl is the ratio of arabinose to xylose determined in the biomasses. Pairwise t-tests were performed between each treatment and control (NP) samples to evaluate the impact of the pretreatments in relation to NP samples for each variable, the treatments which are significantly different from the NP controls are marked with a “*” (p ≤ 0.05). Error bars represent the standard error of the sample replicates.