Bioresources and Bioprocessing

Table 3 Matrix of central composite design of independent variables for the production of biosurfactants

From: Application of response surface methodology to improve the production of antimicrobial biosurfactants by Lactobacillus paracasei subsp. tolerans N2 using sugar cane molasses as substrate

Runs	Factors			Responses
Runs	Peptone (g/L)	Temperature (°C)	Molasses (%, m/v)	Yield (g/L)	Inhibition diameter (mm)	Surface tension (mN/m)
1	8.00 (+ 1)	40.00 (+ 1)	9.00 (+ 1)	1.00	21.50	49.91
2	5.50 (0)	32.50 (0)	5.50 (0)	2.62	63.70	36.71
3	1.68 (− α)	32.50 (0)	5.50 (0)	1.20	38.20	48.01
4	5.50 (0)	32.50 (0)	5.50 (0)	2.60	62.78	36.98
5	5.50 (0)	44.00 (+ α)	5.50 (0)	0.71	19.00	52.66
6	5.50 (0)	32.50 (0)	5.50 (0)	2.74	63.60	36.01
7	3.00 (− 1)	25.00 (− 1)	9.00 (+ 1)	1.00	22.82	49.09
8	5.50 (0)	32.50 (0)	0.16 (− α)	1.20	33.07	48.72
9	9.31 (+ α)	32.50 (0)	5.50 (0)	1.70	52.12	43.19
10	5.50 (0)	32.50 (0)	5.50 (0)	2.36	54.12	39.13
11	8.00 (+ 1)	40.00 (+ 1)	2.00 (− 1)	1.96	37.23	42.38
12	8.00 (+ 1)	25.00 (− 1)	9.00 (+ 1)	0.90	23.12	51.28
13	3.00 (− 1)	25.00 (− 1)	2.00 (− 1)	0.099	0.10	63.80
14	8.00 (+ 1)	25.00 (− 1)	2.00 (− 1)	1.00	27.02	49.10
15	5.50 (0)	32.50 (0)	5.50 (0)	2.35	64.90	38.07
16	5.50 (0)	23.00 (− α)	5.50 (0)	0.30	5.80	54.80
17	5.50 (0)	32.50 (0)	5.50 (0)	2.653	53.78	38.34
18	3.00 (− 1)	40.00 (+ 1)	9.00 (+ 1)	1.30	32.70	46.78
19	5.50 (0)	32.50 (0)	10.83 (+ α)	2.33	41.01	39.71
20	3.00 (− 1)	40.00 (+ 1)	2.00 (− 1)	0.10	0.10	63.90

*() indicates the coded values of the different factors

Back to article page