With the aim to adjust the inulinase rate, three inulinase concentrations
(0.01, 0.05 and 0.25 mL L−1) were studied. Enzymes were added
before the heat treatment (60 °C for 1 h). Differences among the ethanol
yield achieved with 0.25mL L−1 (0.439±0.010 g g−1) and that obtained
with 0.05 mL L−1 (0.393 ± 0.014 g g−1) and 0.01 mL L−1 (0.356 ±
0.013 g g−1)were againsignificant, so itwould be the optimal inulinase
concentration for winter juice.