Immobilized beta-glucosidase from Curvularia lunata

Area of Science:

• Enzymology
• Biotechnology
• Biochemistry

Background:

• Beta-glucosidase is a crucial enzyme in various biological processes.
• Enzyme immobilization is a key technique to improve enzyme stability and reusability.
• Curvularia lunata is a fungal species that produces beta-glucosidase.

Purpose of the Study:

• To immobilize beta-glucosidase from Curvularia lunata using different carriers.
• To evaluate the activity, stability, and reusability of the immobilized enzyme.
• To determine the optimal conditions for enzyme activity and assess kinetic parameters.

Main Methods:

• Immobilization of beta-glucosidase in polyacrylamide, sodium alginate, and agar pellets.
• Enzyme activity assay by measuring 2-nitrophenol release spectrophotometrically.
• Thermostability assessment over 12-26 days.
• Determination of Michaelis constant (Km) for immobilized preparations.

Main Results:

• All immobilized beta-glucosidase preparations showed enhanced stability compared to the free enzyme.
• Polyacrylamide exhibited the best thermostability and reusability among the tested carriers.
• Optimal pH and temperature conditions were identified for the immobilized enzymes.
• Michaelis constant (Km) values were calculated for each immobilized enzyme.

Conclusions:

• Enzyme immobilization significantly improves beta-glucosidase stability and reusability.
• Polyacrylamide is a highly effective carrier for beta-glucosidase immobilization.
• The study provides valuable insights for industrial applications of immobilized beta-glucosidase.