S. No. | Biochemical tests | S. aureus | S. typhi |
1 | Oxidase | − | − |
2 | Catalase | + | + |
3 | Coagulase | + | × |
4 | DNase | + | − |
5 | Indole | − | − |
6 | Urease | + | − |
7 | Citrate | + | + |
8 | H2S | − | + |
9 | Suc. Ferm. | + | + |
10 | Fruc. Ferm. | + | + |
11 | Gluc. Ferm. | + | + |
12 | Mannitol | + | + |
13 | Motility test | Non Motile | Motile |
14 | Morphology Gram staining | Gram positive | Gram negative Rods |