Table 1 Independent variables with their respective coded values and levels used in the Box–Behnken design
From: Vinasse: from a residue to a high added value biopolymer
Culture media composition | |||
|---|---|---|---|
Level | C (g/L) | N (g/L) | Ph (g/L) |
High (+ 1) | 8 | 0.4 | 1.2 |
Central (0) | 6 | 0.25 | 1.05 |
Low (− 1) | 4 | 0.1 | 0.9 |
Fermentations conditions | |||
|---|---|---|---|
Level | C/N | T (°C) | t (h) |
High (+ 1) | 40 | 37 | 72 |
Central (0) | 30 | 33.5 | 48 |
Low (− 1) | 20 | 30 | 24 |