Modification of Medium Composition for Enhancing the Production of Antifungal Activity from Xenorhabdus stockiae PB09 by Using Response Surface Methodology

Table 1

Coded levels and real values for the experimental design and results of FFD.

Run	X1: sucrose (g/L)	X2: yeast extract (g/L)	X3: mineral (g/L)	Mycelial inhibition (%)
				Observed	Predicted
1	−1 (1)	−1 (16)	−1 (5.5)	60.67	62.57
2	+1 (4)	−1 (16)	−1 (5.5)	70.67	69.67
3	−1 (1)	+1 (24)	−1 (5.5)	75.27	73.97
4	+1 (4)	+1 (24)	−1 (5.5)	80.67	81.07
5	−1 (1)	−1 (16)	+1 (9.5)	65.27	67.80
6	+1 (4)	−1 (16)	+1 (9.5)	78.33	74.90
7	−1 (1)	+1 (24)	+1 (9.5)	82.33	79.20
8	+1 (4)	+1 (24)	+1 (9.5)	82.27	86.30
9	0 (2.5)	0 (20)	0 (7.5)	76.34	78.35
10	0 (2.5)	0 (20)	0 (7.5)	80.27	78.35
11	0 (2.5)	0 (20)	0 (7.5)	79.45	78.35
12	0 (2.5)	0 (20)	0 (7.5)	77.33	78.35