Improvement of Phytase Activity by a New Saccharomyces cerevisiae Strain Using Statistical Optimization

Table 2

Experimental design and results for the optimization of the medium composition for phytase activity using RSM.

Run; n°	Sodium phytate (% w/v)	Sucrose (%  w/v)	Phytase activity in sodium phytate medium (U/mL)
			Experimental	Predicted
1	−1	−1	0.35	0.34
2	+1	−1	0.36	0.35
3	−1	+1	0.35	0.34
4	+1	+1	0.51	0.50
5	−1.41	0	0.29	0.29
6	+1.41	0	0.40	0.41
7	0	−1.41	0.34	0.35
8	0	+1.41	0.45	0.46
9	0	0	0.43	0.43
10	0	0	0.43	0.43
11	0	0	0.43	0.43