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Table 3 Percent loss in pNP activity due to the proteins being bound to lignin as a function of pH

From: New perspective on glycoside hydrolase binding to lignin from pretreated corn stover

pNP substrates Activity loss in pNP activity in the unbound fraction at different pH values
pH 4.8 pH 6.0
pNP-cellobioside (β-d-glucosidases, endoglucanases) 95 (%) 84 (%)
pNP-xylopyranoside (xylanases; β-d-xylobiosidases) 74 (%) 70 (%)
pNP-glucopyranoside (β-d-glucosidases) 99 (%) 68 (%)