Optimization of immobilization of α-amylase in alginate gel and its comparative biochemical studies with free α-amylase

Authors

  • Sachin Talekar Department of Biotechnology Engineering, Kolhapur Institute of Technology’s College of Engineering, Kolhapur, Maharashtra, India.
  • Sandeep Chavare Department of Biotechnology Engineering, Kolhapur Institute of Technology’s College of Engineering, Kolhapur, Maharashtra, India.

Keywords:

calcium alginate, enzyme immobilization, entrapment, α-amylase, starch hydrolysis

Abstract

The α-amylase was immobilized by entrapment in calcium alginate beads. The effect of concentration of sodium alginate, calcium chloride and curing time on immobilization yield of α-amylase in calcium alginate beads were investigated and immobilized α-amylase was characterized. Three percent (w/v) sodium alginate, 1M calcium chloride and 2 h curing time were used and 90% immobilization yield of α-amylase was achieved with enhanced thermal and acidic condition stabilities. Significant changes in optimum pH and temperature values of the enzyme were recorded after immobilization. The activity of immobilized enzyme was affected by the size of the bead and bead size of 2.4mm was found to be most effective for starch hydrolysis. From the enzyme kinetic study, decrease in substrate affinity and velocity of enzyme reaction were observed after immobilization of enzyme. Immobilized α-amylase retained 35% activity after 10 reuses with 30 min of each reaction time. 

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Author Biographies

Sachin Talekar, Department of Biotechnology Engineering, Kolhapur Institute of Technology’s College of Engineering, Kolhapur, Maharashtra, India.

Department of Biotechnology Engineering, Kolhapur Institute of Technology’s College of Engineering, Kolhapur, Maharashtra, India.

Sandeep Chavare, Department of Biotechnology Engineering, Kolhapur Institute of Technology’s College of Engineering, Kolhapur, Maharashtra, India.

Department of Biotechnology Engineering, Kolhapur Institute of Technology’s College of Engineering, Kolhapur, Maharashtra, India.

Published

14-03-2012

How to Cite

Talekar, S., & Chavare, S. (2012). Optimization of immobilization of α-amylase in alginate gel and its comparative biochemical studies with free α-amylase. Recent Research in Science and Technology, 4(2). Retrieved from https://updatepublishing.com/journal/index.php/rrst/article/view/861

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