Optimization of Ultrasound-Assisted Extraction of Total Flavonoids from Dendranthema indicum var. aromaticum by Response Surface Methodology

Table 6

Predicted and experimental values of total flavonoids (TF) extraction rate under optimum conditions.

Optimum conditions			TF extraction rate (g QE^a/100 g DW)
Time (min)	Solid/liquid ratio (g/mL)	Temperature (°C)	Predicted	Experimental^b
40	1 : 23.073	60	0.448	0.424 ± 0.029

^aQuercetin equivalent. ^bMean ± SD (n = 3).