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Table 2 ANOVA for response surface models of all independent variables

From: Optimization of ultrasound-assisted extraction of flavonoid compounds and their pharmaceutical activity from curry leaf (Murraya koenigii L.) using response surface methodology

Factor Catechin Myricetin Quercetin DPPH
Mean p-value Mean p-value Mean p-value Mean p-value
  Square Prob > F Square Prob > F Square Prob > F Square Prob > F
Model 0.0225 < 0.0001** 0.0226 < 0.0001** 0.0225 < 0.0001** 244.3220 0.0001**
Linear term         
 X1 0.0142 0.0060** 0.0145 0.0061** 0.0142 0.0060** 372.0941 0.0006**
 X2 0.0041 0.0873 0.0040 0.0954 0.0041 0.0873 40.4155 0.1258
 X3 0.0012 0.3259 0.0011 0.3466 0.0012 0.3259 19.1805 0.2749
Quadratic         
 X1 2 0.1637 < 0.0001** 0.1640 < 0.0001** 0.1637 < 0.0001** 1599.0550 < 0.0001**
 X2 2 0.0005 0.5309 0.0005 0.5285 0.0005 0.5309 2.2023 0.7028
 X3 2 0.0006 0.4902 0.0006 0.4883 0.0006 0.4902 8.9640 0.4472
Interactions         
 X1X2 0.0034 0.1168 0.0035 0.1126 0.0034 0.1168 13.7813 0.3502
 X1X3 0.0002 0.7122 0.0002 0.6853 0.0002 0.7122 0.4513 0.8624
 X2X3 0.0002 0.6527 0.0002 0.6853 0.0002 0.6527 3.2513 0.6436
  1. Independent variable X1: Temperature, X2: Mthanol concentration, X3: Ultrasonic power; **Significant at P < 0.01.