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

Table 2 ANOVA for response surface models of all independent variables

Factor	Catechin		Myricetin		Quercetin		DPPH
Factor	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

Independent variable X₁: Temperature, X₂: Mthanol concentration, X₃: Ultrasonic power; **Significant at P < 0.01.

ISSN: 2662-7671