Table 2.

Experimental design and results (actual and predicted values) of the full factorial central composite design.

Std Run	Time (min)	TMP (bar)	CFV (cm/s)	Membrane permeability (L m−1 h -1 bar −1)		Amount of xylitol (g/L)
				Actual	Predicted	Actual	Predicted
1	30.00	1.00	0.70	50.20	50.31	15.09	15.03
2	50.00	1.00	0.70	48.32	48.48	13.90	13.86
3	30.00	1.40	0.70	51.86	51.97	15.87	15.84
4	50.00	1.40	0.70	49.87	49.90	15.30	15.38
5	30.00	1.00	1.06	52.40	52.53	16.17	16.07
6	50.00	1.00	1.06	50.34	50.39	15.33	15.34
7	30.00	1.40	1.06	57.30	57.30	16.26	16.28
8	50.00	1.40	1.06	54.85	54.91	16.21	16.25
9	20.00	1.20	0.88	54.50	54.41	16.18	16.26
10	60.00	1.20	0.88	50.25	50.19	15.12	15.07
11	40.00	0.80	0.88	47.43	47.29	14.31	14.40
12	40.00	1.60	0.88	53.49	53.47	16.18	16.12
13	40.00	1.20	0.52	49.65	49.53	14.32	14.34
14	40.00	1.20	1.24	56.80	56.76	16.25	16.26
15	40.00	1.20	0.88	51.87	52.07	15.67	15.80
16	40.00	1.20	0.88	52.17	52.07	15.53	15.80
17	40.00	1.20	0.88	51.84	52.07	15.72	15.80
18	40.00	1.20	0.88	52.50	52.07	16.00	15.80
19	40.00	1.20	0.88	52.27	52.07	15.98	15.80
20	40.00	1.20	0.88	51.93	52.07	15.89	15.80