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.
Actual and coded levels of the factors used in the experimental design
| Variables | Factor level | ||||
|---|---|---|---|---|---|
| − α (− 1.68) |
− 1 | 0 | 1 | + α (+ 1.68) |
|
| NaCl (%) | 2.36 | 10 | 20 | 30 | 37.64 |
| Solvent: biomass (v/w) | 1.18 | 5 | 10 | 15 | 18.82 |
| Extraction time (min) | 8.54 | 20 | 35 | 50 | 61.46 |
