Table 3. SOD activity of lactic acid bacteria and E. coli.

Strain	SOD activity (U/mg protein)
		IPTG+	IPTG–
L. casei Shirota	ND	-	-
L. casei ATCC334	ND	-	-
L. lactis ATCC19435	45.1	-	-
L. casei MS1001	11.0	-	-
L. casei MS1002	ND	-	-
E. coli BES3 (20°C)	-	100.4	55.6
E. coli BSM4 (20°C)	-	32.8	38.4

ND: not detected.

Temperatures in parentheses are those when the gene expression was induced.