Temperature and pH profiling of extracellular amylase from Antarctic and Arctic soil microfungi

Krishnan, Abiramy and Alias, Zazali and Convey, Peter and Gonzalez-Aravena, Marcelo and Smykla, Jerzy and Idid, Mohammed Rizman and Alias, Siti Aisah (2022) Temperature and pH profiling of extracellular amylase from Antarctic and Arctic soil microfungi. Fermentation-Basel, 8 (11). ISSN 2311-5637, DOI https://doi.org/10.3390/fermentation8110601.

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While diversity studies and screening for enzyme activities are important elements of understanding fungal roles in the soil ecosystem, extracting and purifying the target enzyme from the fungal cellular system is also required to characterize the enzyme. This is, in particular, necessary before developing the enzyme for industrial-scale production. In the present study, partially purified alpha-amylase was obtained from strains of Pseudogymnoascus sp. obtained from Antarctic and Arctic locations. Partially purified alpha-amylases from these polar fungi exhibited very similar characteristics, including being active at 15 degrees C, although having a small difference in optimum pH. Both fungal taxa are good candidates for the potential application of cold-active enzymes in biotechnological industries, and further purification and characterization steps are now required. The alpha-amylases from polar fungi are attractive in terms of industrial development because they are active at lower temperatures and acidic pH, thus potentially creating energy and cost savings. Furthermore, they prevent the production of maltulose, which is an undesirable by-product often formed under alkaline conditions. Psychrophilic amylases from the polar Pseudogymnoascus sp. investigated in the present study could provide a valuable future contribution to biotechnological applications.

Item Type: Article
Funders: Yayasan Penyelidikan Antartika Sultan Mizan (YPASM), University Malaya (Grant No: PG041-2013A & RP007-2012A), Ministry of Energy, Science, Technology, Environment and Climate Change (MESTECC), Malaysia (Grant No: GA006-2014FL), UK Research & Innovation (UKRI) Natural Environment Research Council (NERC)
Uncontrolled Keywords: Alpha-amylase; Enzyme; Antarctic; Arctic; Temperature; pH
Subjects: G Geography. Anthropology. Recreation > GE Environmental Sciences
Q Science > QH Natural history > QH301 Biology
Divisions: Faculty of Science > Institute of Biological Sciences
Deputy Vice Chancellor (Research & Innovation) Office > Institute of Ocean and Earth Sciences
Depositing User: Ms. Juhaida Abd Rahim
Date Deposited: 10 Nov 2023 08:33
Last Modified: 10 Nov 2023 08:33
URI: http://eprints.um.edu.my/id/eprint/40744

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