Fig. 7.

Influence of enzyme concentration and reaction time on post-consumer PET depolymerization in the presence of Humicola insolens cutinase (HiC). Experimental conditions: 5 g L⁻¹ PET; phosphate buffer (pH = 8.0 and 0.1 mol L⁻¹); 800 rpm; 70 °C; 7 days. A 3.2 vol% of enzyme; B 10 vol% of enzyme; C 40 vol% of enzyme; D 80 vol% of the enzyme