Table 5.

Experimental design matrix using RSM with CCD and responses for butanol production.

Run No.	Variables			Butanol (g/L)
	Glucose (g/L)	C/N ratio	Butyric acid (g/L)	Actual value	Predicted value
1	20.0	10.0	0.0	4.85	4.37
2	80.0	10.0	0.0	10.66	11.03
3	20.0	120.0	0.0	3.01	2.67
4	80.0	120.0	0.0	11.11	11.15
5	20.0	10.0	10.0	7.25	7.02
6	80.0	10.0	10.0	8.94	9.73
7	20.0	120.0	10.0	6.64	6.71
8	80.0	120.0	10.0	10.95	11.24
9	5.0	00.0	5.0	0.90	1.55
10	100.5	65.0	5.0	11.50	10.69
11	50.0	5.0	5.0	11.18	10.07
12	50.0	157.5	5.0	9.00	8.97
13	50.0	65.0	0.0	9.23	9.56
14	50.0	65.0	13.4	10.41	10.55
15	50.0	65.0	5.0	10.89	10.72
16	50.0	65.0	10.0	12.16	10.94
17	50.0	65.0	5.0	10.64	10.72
18	50.0	65.0	5.0	10.53	10.72
19	50.0	65.0	5.0	9.90	10.72
20	50.0	65.0	5.0	10.08	10.72