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) |