Enhancement of 2,3-Butanediol Production by Klebsiella oxytoca PTCC 1402

Table 3

The main effects of the factors at the assigned levels on 2,3-butanediol yield.

Factors	Level 1	Level 2	Level 3	L2 − L1	L3 − L2
Glucose	0.221	0.340	0.222	0.119	−0.119
Acetic acid	0.226	0.329	0.228	0.102	−0.101
Succinic acid	0.231	0.323	0.230	0.091	−0.093
pH	0.293	0.250	0.240	−0.043	−0.011
Temperature	0.243	0.243	0.298	0.000	0.054
Mixing intensity	0.238	0.301	0.245	0.062	−0.056
Inoculum size	0.235	0.241	0.308	0.006	0.067