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. 2021 Jun 23;14:143. doi: 10.1186/s13068-021-01994-y

Fig. 4.

Fig. 4

Effect of addition of different lignins extracted from acid-pretreated bamboo residues on the enzymatic hydrolysis of Avicel: a 20% surface lignin, b 40% surface lignin and c 40% milled wood lignin. The relationship between the enzymatic digestibility of Avicel and d contact angle and e molecular weight