Optimization of culture conditions for enhanced production of extracellular α-amylase using solid-state and submerged fermentation from Aspergillus tamarii MTCC5152.

Arunachallam Premalatha, Kumaravel Vijayalakshmi, Muthiah Shanmugavel, Gopal Suseela Rajakumar
Author Information
  1. Arunachallam Premalatha: Department of Advanced Zoology and Biotechnology, Meenakshi College for Women, Kodambakkam, Chennai, India.
  2. Kumaravel Vijayalakshmi: Department of Biochemistry, College of Science and Humanities, SRM Institute of Science of Technology, Kattankulathur, Chengalpattu District, India. ORCID
  3. Muthiah Shanmugavel: Department of Microbiology, Central Leather Research Institute, Adyar, Chennai, India.
  4. Gopal Suseela Rajakumar: Department of Microbiology, Central Leather Research Institute, Adyar, Chennai, India.

Abstract

Amylases are one of the main enzymes used in various industries such as food, fermentation, textile, and pharmaceuticals. Microorganisms are the potent sources of amylase enzyme, apart from plant and animal sources. Fungal amylases are more stable than bacterial amylases. The production of extracellular α-amylase from Aspergillus tamarii MTCC5152 using solid-state and submerged fermentation (SSF and SmF) and the various nutritional factors influencing its production were studied. A higher activity of α-amylase (519.40 u/g) was attained in a medium having wheat bran (WB) alone as the substrate at an initial moisture content of 70% (v/w) with 2.5% (v/w) of inoculum level (containing 10 spores/ml) after 4 days of incubation at 28°C by SSF. Addition of 1% glucose to WB containing basal medium enhanced α-amylase production (6.49 u/ml) after 4 days of incubation by SmF method. Comparative evaluation of enzyme production by SSF and SmF methods produced better results in SSF method.

Keywords

References

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MeSH Term

alpha-Amylases
Fermentation
Aspergillus
Amylases

Chemicals

alpha-Amylases
Amylases

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