highly significantP = 0.0171
As seen in Table 3 , the results of significance test of regression equation coefficient of the model showed that the first term a ( P < 0.001), B ( P < 0.001), and C ( P < 0.001) were highly significant; the interaction terms AB ( P = 0.0171), AC ( P = 0.0427), and BC ( P = 0.0398) were significantly; The quadratic terms A 2 ( P < 0.001), B 2 ( P < 0.001), and C 2 ( P < 0.001) were highly significant ( Table 2 ), which indicated that the extraction reaction time, enzymolysis reaction time, solid-liquid ratio, extraction reaction time and enzymatic hydrolysis reaction time, extraction reaction time and solid-liquid ratio, enzymatic hydrolysis reaction time, and solid-liquid ratio had significant effects on the extraction rate of PCCL.