| Species | Au removed (μmo/g dry wt. cells) |
| Citrobacter freundii IAM12471 | 941 |
| Escherichia coli IAM1264 | 1230 |
| Pseudomonas aureofaciens IAM12353 | 1000 |
| Pseudomonas maltophilia IAM1554 | 1259 |
| P. putida IAM1506 | 1104 |
| P. saccharophilia IAM1504 | 1418 |