Purification and Properties of Polygalacturonase Produced by Thermophilic Fungus Thermoascus aurantiacus CBMAI-756 on Solid-State Fermentation

Table 3

Influence of ions on the PG activity.

Ion	Residual activity (%)
Control	100
Fe^+3	94
Ag^+	82
Ca^+2	94
Mg^+2	76
Mn^+2	23
Zn^+2	41
K^+	100
Hg^+2	0
EDTA	73