Purification and Characterization of a Thermostable β-Mannanase from Bacillus subtilis BE-91: Potential Application in Inflammatory Diseases

Table 3

Effects of different metal ions (1 mmol/L) on -mannanase activity.

Metal ions	Relative activity (%)
Blank	100
K^+	99 ± 3.2
	103 ± 2.7
Ca^2+	117 ± 3.6
Zn^2+	115 ± 2.9
Mn^2+	168 ± 4.5
Cu^2+	116 ± 2.1
Mg^2+	107 ± 2.8
Ba^2+	83 ± 3.1
Pb^2+	74 ± 2.9
Fe^3+	99 ± 3.6
Al^3+	121 ± 4.3

Data are mean ± SD, .