Table 4.

Optimized responses and theoretical optimum.

Dependent variable	X 1	X 2 (min)	X 3 (mL/g)	Optimal value†	Theoretical predicted‡
Pectin yield (%)	2.00	62.07	36.57	24.32	24.30
DE (%)	2.59	70.05	40.00	78.26	73.00
MeO (%)	2.23	60.97	31.12	10.72	10.45
AUA (%)	2.15	57.77	26.97	83.24	81.33

^†Optimum calculated by each model separately. ^‡Responses at pH = 2.0, extraction time = 62.31 min, and LSR = 35.07 g/mL.