TABLE 2.
Biochemical profiles of strains isolated using API 20E
| Test | Reaction and/or enzyme | Aeromonas bivalvium (MC23) | Aeromonas salmonicida (MC25) | Aeromonas bivalvium (MA2) | Raoultella ornithinolytica (MA5) | Klebsiella sp. (MA11) |
|---|---|---|---|---|---|---|
| ONPG | β-Galactosidase (ortho-nitrophenyl-β-d-galactopyranosidase) | + | + | + | + | − |
| ADH | Arginine dihydrolase | + | + | + | − | − |
| LDC | Lysine decarboxylase | − | − | − | + | + |
| ODC | Ornithine decarboxylase | − | − | − | − | − |
| CIT | Citrate utilization | − | − | − | + | + |
| H2S | H2S production | − | − | − | − | − |
| URE | Urease | − | − | − | + | + |
| TDA | Tryptophan deaminase | + | + | + | + | + |
| IND | Indole production | + | + | + | + | + |
| VP | Acetoin production (Voges-Proskauer test) | − | + | + | + | + |
| GEL | Gelatinase | + | + | + | − | − |
| GLU | Fermentation/oxidation (glucose) | + | + | + | + | + |
| MAN | Fermentation/oxidation (mannitol) | + | + | + | + | + |
| INO | Fermentation/oxidation (inositol) | − | − | − | + | + |
| SOR | Fermentation/oxidation (sorbitol) | − | − | − | + | + |
| RHA | Fermentation/oxidation (rhamnose) | − | − | − | + | + |
| SAC | Fermentation/oxidation (saccharose) | + | + | + | + | + |
| MEL | Fermentation/oxidation (melibiose) | − | − | − | + | + |
| AMY | Fermentation/oxidation (amygdalin) | − | − | + | + | + |
| ARA | Fermentation/oxidation (arabinose) | + | + | + | + | + |
| Nitrate reduction GLU tube | NO2 production | − | − | + | + | + |