Table 2.

Comparison of results in 20 biochemical tests for bacterial isolates

N	Test	E. cloacae	E. kobei	E. hormaechei
1	ONPG	Negative	Positive	Positive
2	Arginine dihydrolase	Negative	Positive	Positive
3	Lysine decarboxylase	Positive	Negative	Negative
4	Ornithine decarboxylase	Positive	Positive	Positive
5	Citrate Simmons	Negative	Positive	Positive
6	H2S	Negative	Negative	Negative
7	Urease	Positive	Positive	Positive
8	Tryptophan deaminase	Positive	Positive	Negative
9	Indole	Negative	Negative	Negative
10	Oxidase	Negative	Negative	Negative
11	Voges–Proskauer	Positive	Positive	Positive
Enzymes production
12	Gelatinase	Negative	Negative	Negative
13	Glucose	Positive	Positive	Positive
14	Mannitol	Negative	Positive	Positive
15	Inositol	Negative	Negative	Negative
16	Sorbitol	Positive	Positive	Positive
17	Rhamnose	Positive	Positive	Positive
18	Sucrose	Positive	Positive	Positive
19	Melibiose	Negative	Negative	Negative
20	Arabinose	Positive	Positive	Positive