Table 5. Predicted and experimental values at optimized conditions¹⁾ for quality parameters

Selected parameter	Predicted value	Experimental value	% difference from predicted
Luteolin	174.51 mg/100 g	172.35±1.25 mg/100 g	1.25
TPC	1,667.23 mg GAE/100 g	1,666.29±0.06 mg GAE/100 g	0.06
TFC	1,411.90 mg QE/100 g	1,410.70±0.09 mg QE/100 g	0.09
ABTS	62.27%	61.38±1.46%	1.46
DPPH	74.68%	72.77±2.62%	2.62

Optimized parameters: 81°C; 87.5% methanol. Confidence=95%, Population=99%.