Research Article

The Stability Improvement of α-Amylase Enzyme from Aspergillus fumigatus by Immobilization on a Bentonite Matrix

Table 1

Summary of partial purification procedures of α-amylase from A. fumigatus unit activity was determined with 0.1% soluble starch as a substrate in aquadest at 60°C for 10 min.

StepV (mL)Unit activity (U/mL)Total activity (U)Protein content (mg/mL)Total protein (mg)Specific activity (U/mg)Yield (%)Purity

Crude enzyme3500100.37351308.70.2123742.91472.881001
Fraction (NH4)2SO4 (20–85%)140345.5748379.70.087012.193970.0813.778
Dialysis239179.6842993.40.03989.524514.6712.2410