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Isolation, characterization and biotechnological potentials of Thraustochytrids from Icelandic waters

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dc.contributor Háskólinn á Akureyri
dc.contributor University of Akureyri
dc.contributor.author Stefánsson, Magnús Örn
dc.contributor.author Baldursson, Sigurður
dc.contributor.author Magnússon, Kristinn Pétur
dc.contributor.author Eyþórsdóttir, Arnheiður
dc.contributor.author Einarsson, Hjörleifur
dc.date.accessioned 2020-12-08T12:32:19Z
dc.date.available 2020-12-08T12:32:19Z
dc.date.issued 2019-07-31
dc.identifier.citation Stefánsson, M. Ö., Baldursson, S., Magnússon, K. P., Eyþórsdóttir, A., & Einarsson, H. (2019). Isolation, characterization and biotechnological potentials of Thraustochytrids from Icelandic waters. Marine Drugs, 17(8), 449. https://doi.org/10.3390/md17080449
dc.identifier.issn 1660-3397 (eISSN)
dc.identifier.uri https://hdl.handle.net/20.500.11815/2282
dc.description.abstract The following study reports on the first thraustochytrid isolates identified from Iceland. They were collected from three different locations off the northern coast of the country (Location A, Skagaströnd; Location B, Hveravík; and Location C, Eyjafjörður). Using 18S rDNA sequence analysis, isolates from Locations A and B were identified within the Thraustochytrium kinnei species while other isolates within the Sicyoidochytrium minutum species when compared to other known strains. Cells isolated from Locations A ( 2.10±0.70 g/L) and B ( 1.54±0.17 g/L) produced more biomass than the ones isolated from Location C ( 0.43±0.02 g/L). This study offers the first-time examination of the utility of byproducts from fisheries as a nitrogen source in media formulation for thraustochytrids. Experiments showed that isolates produced more biomass (per unit of substrate) when cultured on nitrogen of marine ( 2.55±0.74 g/L) as compared to of commercial origin ( 1.06±0.57 g/L). Glycerol ( 2.43±0.56 g/L) was a better carbon source than glucose ( 1.84±0.57 g/L) in growth studies. Fatty acid (FA) profiles showed that the isolates from Location C (S. minutum) had low ratios of monounsaturated ( 4.21±2.96% ) and omega-6 ( 0.68±0.59% ) FAs. However, the isolates also had high ratios of docosahexaenoic acid (DHA; 35.65±1.73% ) and total omega-3 FAs ( 40.39±2.39% ), indicating that they could serve as a source of marine oils for human consumption and in aquaculture feeds. The T. kinnei isolates from Location A could be used in biodiesel production due to their high ratios of monounsaturated ( 18.38±6.27% ) long chain ( 57.43±8.27% ) FAs.
dc.description.sponsorship The research reported here was partly funded by the AVS R&D Fund of the Ministry of Fisheries and Agriculture in Iceland, grant number AVS: R 047-10.
dc.format.extent 449
dc.language.iso en
dc.publisher MDPI AG
dc.relation.ispartofseries Marine Drugs;17(8)
dc.rights info:eu-repo/semantics/openAccess
dc.subject Biotechnology
dc.subject Biomass
dc.subject Fish byproducts
dc.subject Líftækni
dc.subject Lífmassi
dc.subject Sjávarafurðir
dc.title Isolation, characterization and biotechnological potentials of Thraustochytrids from Icelandic waters
dc.type info:eu-repo/semantics/article
dcterms.license This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).
dc.description.version Peer Reviewed
dc.identifier.journal Marine Drugs
dc.identifier.doi 10.3390/md17080449
dc.relation.url https://www.mdpi.com/1660-3397/17/8/449/pdf
dc.contributor.department Auðlindadeild (HA)
dc.contributor.department Faculty of Natural Resource Sciences (UA)
dc.contributor.school Viðskipta- og raunvísindasvið (HA)
dc.contributor.school School of Business and Science (UA)

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