. 2022 Jun 17;11(6):926. doi: 10.3390/biology11060926

Table 3.

Corresponding p-values of linear, interaction, and quadratic terms of regression coefficients obtained by RSM of responses for TPC, TFC, TAC, AA, DPPH, and CUPRAC experiments.

Source	DF	F-Value	p-Value	F-Value	p-Value	F-Value	p-Value	F-Value	p-Value	p-Value	p-Value	F-Value	p-Value
Source	DF	TPC (mg GAE/100 mL)		TFC (mg CE/100 mL)		TAC (mg Cy-3-gly/100 mL)		AA (mg/100 mL)		DPPH (% Inhibition)		CUPRAC (% Inhibition)
Model	5	3896.75	0.00000	10,322.31	0.00000	320.69	0.00000	2152.32	0.00000	152.89	0.00000	90.57	0.000000
Linear	2	5714.21	0.00000	15115.1	0.00000	314.37	0.00000	710.19	0.00000	80.88	0.00000	54.06	0.000000
A	1	145.71	0.00001	370.8	0.00000	563.6	0.00000	492.07	0.00000	40.64	0.00000	27.78	0.001000
B	1	11,424.47	0.00000	30,222.06	0.00000	105.62	0.00000	1051.49	0.00000	133.6	0.00000	88.75	0.000000
Square	2	34.34	0.00024	62.01	0.00000	358.48	0.00000	3234.75	0.00000	161.59	0.00000	83.31	0.000000
A²	1	35.69	0.00056	59.62	0.00000	72.14	0.00000	6420.62	0.00000	219.86	0.00000	114.43	0.000000
B²	1	47.74	0.00023	90.56	0.00000	709.4	0.00000	590.74	0.00000	173.04	0.00000	88.05	0.000000
2-Way Interaction	1	12,459.79	0.00000	32,911.97	0.00000	741.54	0.00000	2704.48	0.00000	173.38	0.00000	119.42	0.000000
A*B	1	12,459.79	0.00000	32,911.97	0.00000	741.54	0.00000	2704.48	0.00000	173.38	0.00000	119.42	0.000000
Error	7
Lack-of-Fit	3	*	*	*	*	2.31	0.21800	*	*	2.19	0.23100	*	*
Pure Error	4
Total	12
R²		99.96%		99.99%		99.57%		99.93%		99.09%		98.48%
Adj R²		99.94%		99.98%		99.25%		99.89%		98.44%		97.39%
Pred. R²		99.75%		99.90%		96.49%		99.44%		95.66%		89.96%

A: time; B: amplitude; DF: degrees of freedom; TPC: total phenolic content; TFC: total flavonoid content; TAC: total anthocyanin content; AA: ascorbic acid; DDPH: radical scavenging activity; CUPRAC: Cupric reducing antioxidant capacity; GAE: gallic acid equivalent; CE: catechin equivalent; Cy-3-gly: cyanidin 3-O-glucoside. * Doesn’t matter in statistical calculation.