Table 6 Comparison between predicted and experimental values of response variable of blue honey suckle extract at the givcen condition1) within the range of optimal condition

Response variables2)	Predicted value	Experimental value
TFC (mg RE/g)	65.74	64.09
TAC (mg CGE/g)	0.45	0.38
TPC (mg GAE/g)	14.71	14.29
DPPH (%)	92.54	91.85

The given conditions; 60% of ethanol concentration, 7.5 min of irradiation time, 245 W of microwave power.
TFC, total flavonoid content; TAC, total anthocyanin content; TPC, total polyphenol content; DPPH, DPPH radical scavenging activity.