Abstract:

The enzymatic hydrolysis of pulped Chinese lantern by mixed proteases was optimized using orthogonal
array design to increase reducing sugar and juice yield. The optimal enzymatic hydrolysis conditions were determined
as 0.3 g/L, 65 ℃ and 70 min for enzyme dosage, temperature and time, respectively. The reducing sugar content and
juice yield obtained under these conditions were 52.1 mg/g and 83.26%, respectively. This study indicates that both
parameters can be increased by the enzymatic treatment.

Key words: Chinese lantern (Physalis alkekengi), mixed proteases, enzymatic hydrolysis condition, reducing sugar content