Table 1.
Factors and levels of PB design
| Factors | Level | |
|---|---|---|
| -1 | + 1 | |
| A: medium volume (ml) | 50 | 70 |
| B: initial pH | 5.0 | 7.0 |
| C: inoculum size (%) | 1.5 | 2.5 |
| D: fermentation time (d) | 6.0 | 8.0 |
| E: rotary speed (rpm) | 120 | 180 |
| F: fermentation temperature (°C) | 25 | 35 |
Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.