1.1.1.B65 6 9 purified enzyme, the stability drops significantly at pH 8.5 and pH 9.0, the enzyme loses 85% and 94% of the activity when incubated for 3.5 h at 30°C, and it loses 11% of activity at pH 6.0 after 3.5 h at 30°C. After 96 h at 4°C, 78% of enzyme activity is retained at pH 6.0, and 30% at pH 8.5 743100