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Fig. 5 | Biotechnology for Biofuels

Fig. 5

From: A novel hybrid organosolv: steam explosion method for the efficient fractionation and pretreatment of birch biomass

Fig. 5

SEM imaging at low (1–4) and high (5–8) magnifications of birch treated with hybrid organosolv pretreatment, with (1, 5) and without (2, 6) the presence of explosive discharge at the end of the pretreatment and treated with traditional steam explosion with (3, 7) and without (4, 8) the presence of explosive discharge at the end of the pretreatment

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