Table 2.

The CCD plan and actual phytase activity results by B. subtilis B.S.46.

Run no.	Independent variables			Phytase activity (U/mL)
X1	X2	X3
1	0	0	0	4.368
2	+1	+1	−1	0.409
3	−1	+1	+1	0.606
4	0	+α	0	0.351
5	+α	0	0	0.820
6	0	0	0	4.223
7	+1	−1	+1	0.962
8	+1	+1	+1	0.658
9	0	−α	0	1.955
10	−1	+1	−1	1.106
11	0	0	0	4.332
12	+1	−1	−1	2.627
13	0	0	−α	1.654
14	0	0	+α	3.479
15	0	0	0	4.207
16	0	0	0	4.370
17	−1	−1	+1	2.632
18	0	0	0	4.591
19	−1	−1	−1	2.560
20	-α	0	0	1.603