Optimization of Growth Conditions for Chlorpyrifos-Degrading Bacteria in Farm Soils in Nakuru County, Kenya

Figure 1

Tetrazolium test results showing color change to purple in all 7 isolates. The image on the top left shows the setup before the experiment. Images MW1 to MW7 show the change in color in the inoculated tubes to purple (due to degradation of CP), while the control remained colorless, indicating no degradation. Key: MW1: Alcaligenes faecalis UWI9; MW2: Bacillus weihenstephanensis FB25M; MW3: Bacillus toyonensis 20SBZ2B; MW4: Alcaligenes sp. SCAU23; MW5- Pseudomonas sp. P_B845W; MW6: uncultured bacterium clone 99; MW7: Brevundimonas diminuta CB21.