Table 4 Predicted levels of microwave extraction of blue honeysuckle extract for the maximum responses of total flavonoid contents (TFC), total anthocyanin contents (TAC), total polyphenol contents (TPC), DPPH radical scavenging activity (DPPH) by the r idge analysis

Responses	R2	Pro>F	X1 (%)	X2 (min)	X3 (W)	Maximum	Morphology
						Predicted
TFC	0.95	0.0001	52.9	7.5	244	65.74 mg GAE/g	Maximum
TAC	0.97	0.0001	54.8	7.4	248	0.45 mg CGE/g	Maximum
TPC	0.94	0.0001	56.9	7.7	250	14.71 mg GAE/g	Maximum
DPPH	0.95	0.0001	64.1	7.9	242	92.54%	Maximum