Simultaneous Optimization of Microwave-Assisted Extraction of Phenolic Compounds and Antioxidant Activity of Avocado (Persea americana Mill.) Seeds Using Response Surface Methodology

Table 4

Experimental and predicted values of response variables at optimum extraction conditions.

Response variables	Optimum extraction conditions			Maximum value
	X1 (%)	X2 (W)	X3 (min)	Experimental value	Predicted value
TPC (mg·GAE/g)	58	400	5	82.36 ± 1.05	83.90
TFC (mg·QE/g)				19.93 ± 2.50	21.84
DPPH (%)				73.61 ± 0.57	75.67
ABTS (%)				80.20 ± 3.23	82.66

X₁: ethanol concentration (%); X₂: microwave power (W); X₃: extraction time (min). Experimental results were expressed as average values ± standard deviation (n = 3).