Table 5.

Effect of metal ions on endoglucanase activity. Enzyme was produced by S. misionensis PESB-25 grown on 1.0% (w/v) SCB and 1.2% (w/v) CSL.

Iona	Relative activity (%)*	Endoglucanase activity (U·mL−1)
Control (no addition)	100.0	1.72
NaCl	133.2 ± 2.0	2.23
CuSO4	140.6 ± 0.3	2.30
MgSO4	126.6 ± 0.9	2.18
CoSO4	161.2 ± 0.6	2.73
MnSO4	201.5 ± 0.1	3.48
FeSO4	131.1 ± 0.1	2.34
CaCl2	137.6 ± 2.3	2.25
KCl	125.3 ± 4.9	2.17
BaCl2	109.3 ± 0.9	1.97

^aThe final concentration in the reaction mixture was 2 mM.

*Values are based on Mean ± SD of 3 individual observations.