Table 5 Experimental independent variables at two levels used for the biosynthesis of AgNPs by the supernatant of the selected bacterial isolate using Plackett–Burman design
Variable | Symbol | level | |
|---|---|---|---|
Low (−1) | High (+ 1) | ||
AgNO3 conc. | A | 0.5Â mM | 1.5Â mM |
Bacterial supernatant conc. | B | 10% | 30% |
incubation Time | C | 24.0Â h | 72.0Â h |
pH | D | 7.0 | 9.0 |
Illumination | E | Dark | Light |