Figure 4

Effect of glucose and gluconic acid on β-glucosidase activity. Level of β-glucosidase activity in Novozym 188 (●) and Cellic CTec2 (▲) as function of gluconic acid (dotted line), and glucose (solid line) concentration. The activity was measured using p-nitrophenyl-β- D-glucopyranoside as substrate. The activity without the presence of glucose or gluconic acid was set to 100%.