Efficient Degradation of Feather by Keratinase Producing Bacillus sp.

Table 1

Morphological and biochemical characterization of BF isolates.

Character	Test	Isolates
		BF11	BF21
Growth at (°C)	4	−	−
	10	−	−
	27	+	+
	37	+	+
	45	+	+
	55	+	+
	65	−	−
	4	−	−
Growth at different pH	4.5	−	−
	5.5	+	+
	6.5	+	+
	7.5	+	+
	8.5	+	+
	9.5	+	+
	10.5	−	−
Biochemical tests	Indole	−	−
	MR	−	−
	VP	+	+
	Citrate	+	+
Oxygen requirement		A	A
Spore staining		+	+
Motility		+	+
Sugar utilization	Arabinose	−	−
	Glucose	+	+
	Sucrose	+	+
	Lactose	−	−
	Fructose	+	+
	Maltose	+	+
	Mannitol	+	+
	Xylose	−	−
	Glycerol	+	+
	Galactose	−	−
	Starch	+	+
Enzymatic activity	Oxidase	−	−
	Catalase	+	+
	Urease	−	−
	Nitrate reduction	+	+
	Gelatinase	+	+
	Caseinase	+	+
	Amylase	+	+
	𝛽-Galactosidase	−	−
Salt Tolerance (%)	2	+	+
	5	+	+
	7	+	+
	10	−	−