Table 4.

Box-Behnken design arrangement and responses.

Run	X 1	X2	X3	Anthocyanin yield* (mg/100 g)			Anthocyanin yield* (mg/100 g)
				(acidified methanolic extraction)			(acidified ethanolic extraction)
				Y exp⁡	Y pre	% sd	Yexp⁡	Y pre	% sd
1	45	90	20	1132.18	1114.60	3.40	654.60	664.17	2.65
2	60	120	20	1164.47	1110.16	1.32	897.29	867.26	3.46
3	30	60	20	925.12	1114.60	1.10	484.27	514.29	8.36
4	45	90	20	1154.45	1114.60	2.84	633.44	664.17	1.85
5	45	60	5	982.45	1114.60	2.75	537.70	506.71	2.19
6	45	90	20	1094.33	1000.58	1.74	685.77	664.17	3.13
7	30	120	20	1065.39	1213.52	4.05	612.29	615.18	4.41
8	45	120	5	1021.42	1025.63	3.10	642.07	638.21	2.08
9	45	90	20	1079.86	1162.90	4.65	676.86	664.17	4.25
10	60	90	5	1177.27	914.96	2.87	704.42	738.30	3.95
11	45	120	35	1190.35	1181.62	4.29	654.60	685.59	1.79
12	45	60	35	1114.37	991.18	4.28	582.51	586.38	7.79
13	30	90	5	999.15	1344.78	2.65	491.78	492.76	1.18
14	60	60	20	1207.89	1114.60	3.10	740.32	737.43	9.90
15	30	90	35	1079.31	1093.67	7.93	598.10	564.21	8.31
16	60	90	35	1346.21	1059.75	5.70	794.87	793.89	0.00
17	45	90	20	1112.15	1174.63	3.16	670.18	664.17	3.32

*Data are presented as mean of triplicate analyses.

X ₁: temperature; X ₂: time; X ₃: solid-liquid ratio.

% sd < 10 is considered significant.