Table 1.

Supercritical fluid extraction (SFE) yields from date seeds using designed experiments.

Run	Process Variables of SFE			Response Variable (Yield %)
	Temperature °C (X1)	Pressure MPa (X2)	CO2 Flow mL/min (X3)	Sukari Seed (Y1)	Ambara Seed (Y2)	Majdool Seed (Y3)	Sagai Seed (Y4)
1	62.91	20.07	4.09	5.23 ± 0.26	4.62 ± 0.13	5.26 ± 0.45	6.13 ± 1.41
2	62.91	34.93	4.09	4.89 ± 0.18	4.78 ± 0.32	5.19 ± 0.62	6.33 ± 1.22
3	52.50	27.50	2.75	5.91 ± 0.33	6.95 ± 0.24	6.61 ± 0.85	6.85 ± 0.98
4	52.50	40.00	2.75	6.45 ± 0.25	6.76 ± 0.17	6.85 ± 1.01	7.73 ± 1.22
5	52.50	27.50	2.75	5.94 ± 0.13	6.12 ± 0.42	6.48 ± 0.96	7.49 ± 1.45
6	52.50	27.50	2.75	6.11 ± 0.75	6.30 ± 0.52	6.37 ± 0.49	7.27 ± 1.05
7	52.50	27.50	0.50	5.54 ± 0.11	4.32 ± 0.17	5.10 ± 0.54	5.75 ± 0.72
8	62.91	20.07	1.41	4.72 ± 0.08	3.22 ± 0.09	4.54 ± 0.41	5.82 ± 0.65
9	52.50	27.50	2.75	6.69 ± 0.25	4.81 ± 0.17	5.92 ± 0.65	6.99 ± 1.43
10	62.91	34.93	1.41	5.24 ± 0.18	4.07 ± 0.15	4.21 ± 0.37	4.83 ± 0.62
11	70.00	27.50	2.75	1.74 ± 0.06	1.60 ± 0.06	1.90 ± 0.02	2.18 ± 0.04
12	52.50	15.00	2.75	5.53 ± 0.41	4.71 ± 0.16	5.29 ± 0.47	6.25 ± 0.79
13	42.09	20.07	1.41	4.44 ± 0.22	3.82 ± 0.08	4.14 ± 0.54	4.73 ± 0.24
14	42.09	34.93	4.09	4.92 ± 0.13	4.97 ± 0.34	5.98 ± 0.76	5.98 ± 0.69
15	42.09	20.07	4.09	5.87 ± 0.35	4.70 ± 0.33	5.33 ± 0.64	4.64 ± 0.29
16	42.09	34.93	1.41	3.81 ± 0.10	3.92 ± 0.21	3.87 ± 0.11	4.63 ± 0.35
17	35.00	27.50	2.75	2.23 ± 0.08	2.21 ± 0.02	2.45 ± 0.04	2.4 ± 0.18
18	52.50	27.50	5.00	8.13 ± 1.04	7.52 ± 0.85	7.72 ± 1.17	8.28 ± 0.97