Study on optimization of enzymatic hydrolysis of sour cherry juice by orthogonal test

With sour cherry as the raw material on optimization of enzymatic hydrolysis by single-factor test and orthogonal test was made.Results showed that the optimum conditions were pectinase dosage 1.6mL/kg, hydrolysis time 3.5h and hydrolysis temperature 55℃.Under these conditions, the juice yield was 87.17%and that turbidity was 1.25NTU.The main factor that influenced the juice processing in the order of hydrolysis temperature, pectinase dosage and hydrolysis time.