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. 2020 Apr 1;5(14):7861–7876. doi: 10.1021/acsomega.9b04084

Table 4. Production of Superoxide Anions by Test Bacterial Strains.

    mean absorbance (λ520 nm)
treatment mean concentration(μg mL–1) B. thuringiensis P. mosselii S. meliloti A. chroococcum
control 0 0.21 0.12 0.23 0.18
Ag-NPs 387.5 0.78 0.67 0.54 0.46
ZnO-NPs 387.5 0.52 0.51 0.58 0.46