Table 1.

Biochemical characteristics of all Citrobacter cronae study isolates and closely related Citrobacter type strains

Strains: 1, Tue2-1^T–Tue2_11; 2, Citrobacter werkmanii DSM17579^T; 3, Citrobacter werkmanii ; 4, Citrobacter youngae ; 5, Citrobacter pasteurii ; 6, Citrobacter portucalensis A60^T; 7, Citrobacter freundii ; 8, Citrobacter europaeus 97/79^T; 8, Citrobacter braakii. +, Positive result; –, negative result; v, variable result; na, not available. For variable reactions of Citrobacter cronae isolates (n=9), values in parentheses represent percentage of positive strains.

Characteristics	1	2	3	4	5	6	7	8	9
Amygdalin	+	–	–	–	–	–	–	–	–
Cellobiose	+	–	v	v	+	+	v	+	v
Catalase	+	+	v	v	–	–	+	+	+
Phosphatase	–	+	na	na	+	na	na	na	na
α-Glucosidase	–	–	+	v	–	na	v	na	v
Indole	–	–	–	–	–	v	–	–	v
Melibiose	–	–	–	v	–	+	+	+	v
β-Glucosidase	v (66.6)	–	–	v	+	na	v	na	–
Adonitol	v (44.4)	–	–	–	–	–	–	–	–
H2S	v (44.4)	+	+	+	+	+	+	+	v
Malonate	v (88.8)	+	+	–	–	na	–	na	+
Ornithine	v (44.4)	–	–	v	–	na	–	na	v
Sucrose	v (77.7)	–	–	–	v	+	+	–	–
5-Ketogluconate	v (66.6)	–	–	+	+	+	+	+	+
Data obtained from	This study	This study	[19, 30]	[19, 30]	[19]	[20]	[19, 30]	[2]	[19, 30]