Table 4.

Correlations between variables and principal component analysis (PCA) factors, contribution of the variables and squared cosines of the variables.

PCA Variable	Correlations between Variables and PCA Factors		Contribution of the Variables (%)		Correlations between Variables and PCA Factors
	F1	F2	F1	F2	F1	F2
TPC	0.82	−0.52	18.50	13.94	0.67	0.27
AA	0.94	−0.33	24.31	5.71	0.88	0.11
I%	0.93	−0.34	23.87	6.19	0.86	0.12
DIZ S	0.84	0.39	19.51	8.06	0.71	0.15
DIZ E	0.63	0.70	10.95	25.28	0.40	0.49
DIZ C	0.32	0.89	2.87	40.83	0.10	0.78
Et	0.20	0.67			0.04	0.45
MP	−0.11	−0.03			0.01	0.00
T	−0.29	−0.79			0.09	0.62
Rep	−0.31	−0.72			0.10	0.52

Note: Values in bold correspond for each variable to the factor for which the squared cosine is the largest. TPC—total phenolic content; AA—antioxidant activity; I%—radical scavenging activity; Et—ethanolic concentration; MP—microwave power; Rep—extraction repetition, T—extraction duration.