Isolation and Characterization of Urease-Producing Soil Bacteria

Table 2

Biochemical and exoenzyme profiles of the three selected strains.

Characteristics	Isolate_3	Isolate_7	Isolate_11
Control	−	−	−
API 20NE
Nitrate reductase	+	+	+
Indole formation	−	+	−
Arginine dihydrolase	−	W	+
Urease	+	+	+
Protease	+	−	+
L-Arabinose	−	+	+
API ZYM
Alkaline phosphatase	+	+	+
Esterase (C4)	W	W	−
Esterase lipase (C8)	W	W	−
Lipase (C14)	−	−	−
Leucine arylamidase	+	+	+
Valine arylamidase	W	W	+
Cystine arylamidase	−	−	−
Trypsin	−	W	W
α-Chymotrypsin	+	−	−
Acid phosphatase	+	+	+
Naphtanol-AS-BI_phosphohydrolase	W	W	W
α-Galactosidase	−	−	−
β-Galactosidase	−	+	+
β-Glucuronidase	−	−	−
α-Glucosidase	+	−	W
β-Glucosidase	−	−	W
N-Acetyl-β-glucosaminidase	−	−	W
α-Mannosidase	−	−	−
α-Fucosidase	−	−	−

“+” = positive; “W” = weakly positive; and “−” = negative.