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Production and partial purification of α-amylase from a novel isolate Streptomyces gulbargensis

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Journal of Industrial Microbiology & Biotechnology

Abstract

Extracellular amylase production by a newly isolated alkali-thermotolerant strain Streptomyces gulbargensis DAS 131 was optimized and characterized. The highest amylase production was achieved by growing S. gulbargensis DAS 131 in media with 1% starch. Strain exhibited maximal activity at pH 9.0 and 45°C and relatively stable in alkaline conditions (pH 11). Starch and peptone were found to be the good source of carbon and nitrogen with a yield of 2,216.6 and 2,156.1 U, respectively. Maltose and maltotriose were the main end products of starch hydrolysis, indicating α-amylase activity. SDS-PAGE analysis revealed a monomeric form with a molecular weight of 55 kDa.

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Acknowledgments

The authors would like to thank CSIR Task force network programme on Exploration of India’s Rich Microbial Diversity (NWP 0006) for providing the financial support.

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Correspondence to Ashok Pandey.

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Syed, D.G., Agasar, D. & Pandey, A. Production and partial purification of α-amylase from a novel isolate Streptomyces gulbargensis . J Ind Microbiol Biotechnol 36, 189–194 (2009). https://doi.org/10.1007/s10295-008-0484-9

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  • DOI: https://doi.org/10.1007/s10295-008-0484-9

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