Table 2 Low, medium and high levels of medium components affecting A. niger total enzyme activity and cell biomass in a BB design
Factors | Code | Low level (−1) | Middle (0) | High level (+ 1) |
|---|---|---|---|---|
Pectin (g/L) | A | 10.00 | 30.00 | 50.00 |
(NH4)2SO4 (g/L) | B | 1.00 | 3.50 | 6.00 |
K2HPO4 (g/L) | C | 0.50 | 1.25 | 2.00 |