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Table 2 Effect of pH on vanillin inhibition

From: Inhibition of lignin-derived phenolic compounds to cellulase

PH Cellulose conversiona without vanillin (%) Cellulose conversion with vanillinb (%) Apparent inhibition (%) Inhibitor-binding constant β (vanillin, mL/mg)
4.3 40.9 ± 2.1 26.3 ± 1.8 35.7 ± 2.8 0.1112
4.8 41.4 ± 0.6 26.9 ± 0.6 35.0 ± 0.9 0.1092
5.3 39.5 ± 2.0 26.6 ± 0.3 32.6 ± 2.0 0.0967
  1. aEnzymatic hydrolysis of Avicel was carried out with cellulose concentration of 10 mg/mL and cellulase concentration of 0.3 mg/mL at 50 ºC. Cellulose conversion was determined at 24 h
  2. bVanillin concentration was 5 mg/mL