Lipid Composition of Oil Extracted from Wasted Norway Lobster (Nephrops norvegicus) Heads and Comparison with Oil Extracted from Antarctic Krill (Euphasia superba)
In the UK, the Norway lobster (Nephrops norvegicus) supports its most important shellfish fishery. Nephrops are sold either whole, or as tails-only for the scampi trade. In the tailing process, the head (cephalothorax) is discarded as waste. A smaller crustacean species, the Antarctic krill Euphasia...
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MDPI AG
2016
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Online Access: | https://hdl.handle.net/20.500.11815/384 https://doi.org/10.3390/md14120219 |
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ftopinvisindi:oai:opinvisindi.is:20.500.11815/384 2023-05-15T13:39:17+02:00 Lipid Composition of Oil Extracted from Wasted Norway Lobster (Nephrops norvegicus) Heads and Comparison with Oil Extracted from Antarctic Krill (Euphasia superba) Albalat, Amaya Nadler, Lauren Foo, Nicholas Dick, James Watts, Andrew Philp, Heather Neil, Douglas Monroig, Oscar Faculty of Life and Environmental Sciences (UI) Líf- og umhverfisvísindadeild (HÍ) Verkfræði- og náttúruvísindasvið (HÍ) School of Engineering and Natural Sciences (UI) Háskóli Íslands University of Iceland 2016-12-01 219 https://hdl.handle.net/20.500.11815/384 https://doi.org/10.3390/md14120219 en eng MDPI AG Marine Drugs;14(12) Albalat, A.; Nadler, L.E.; Foo, N.; Dick, J.R.; Watts, A.J.R.; Philp, H.; Neil, D.M.; Monroig, O. Lipid Composition of Oil Extracted from Wasted Norway Lobster (Nephrops norvegicus) Heads and Comparison with Oil Extracted from Antarctic Krill (Euphasia superba). Mar. Drugs 2016, 14, 219. doi:10.3390/md14120219 1660-3397 https://hdl.handle.net/20.500.11815/384 Marine Drugs doi:10.3390/md14120219 info:eu-repo/semantics/openAccess Norway lobster Nephrops norvegicus Head waste Lipid class Humrar Fitusýrur info:eu-repo/semantics/article 2016 ftopinvisindi https://doi.org/20.500.11815/384 https://doi.org/10.3390/md14120219 2022-11-18T06:51:31Z In the UK, the Norway lobster (Nephrops norvegicus) supports its most important shellfish fishery. Nephrops are sold either whole, or as tails-only for the scampi trade. In the tailing process, the head (cephalothorax) is discarded as waste. A smaller crustacean species, the Antarctic krill Euphasia superba, represents an economically valuable industry, as its extractable oil is sold as a human dietary supplement. The aim of this study was to determine the amount and composition of the oil contained in discarded Nephrops heads and to compare its composition to the oil extracted from krill. Differences due to Geographical variation and seasonal patterns in the amount and composition of lipid were also noted. Results indicated that Nephrops head waste samples collected from more southern locations in Scotland (Clyde Sea area) contained higher levels of oil when compared to samples collected from northern locations in Iceland. Moreover, seasonal differences within the Clyde Sea area in Scotland were also observed, with oil extracted from Nephrops head waste peaking at around 11.5% during the summer months when larger and more mature females were caught by trawl. At this time of the year, the valuable fatty acids eicosapentaenoic acid (EPA) and docosahexaenoic acid (DHA) accounted for around 23% of the total fatty acid content in oil extracted from Nephrops head waste. A seasonal effect on EPA content was found, with higher levels obtained in the summer, while no trend was found in DHA percentages. Finally, oil from Nephrops head waste contained a higher proportion of EPA and DHA than krill oil but these fatty acids were more abundantly linked to the neutral lipids rather to than polar lipids. The characterization of lipid that could be extracted from Nephrops head waste should be seen as a first step for the commercial use of a valuable resource currently wasted. This approach is extremely relevant given the current limited supply of EPA and DHA and changes in the Common Fisheries Policy. This work was supported ... Article in Journal/Newspaper Antarc* Antarctic Antarctic Krill Iceland Opin vísindi (Iceland) Antarctic Norway The Antarctic Marine Drugs 14 12 219 |
institution |
Open Polar |
collection |
Opin vísindi (Iceland) |
op_collection_id |
ftopinvisindi |
language |
English |
topic |
Norway lobster Nephrops norvegicus Head waste Lipid class Humrar Fitusýrur |
spellingShingle |
Norway lobster Nephrops norvegicus Head waste Lipid class Humrar Fitusýrur Albalat, Amaya Nadler, Lauren Foo, Nicholas Dick, James Watts, Andrew Philp, Heather Neil, Douglas Monroig, Oscar Lipid Composition of Oil Extracted from Wasted Norway Lobster (Nephrops norvegicus) Heads and Comparison with Oil Extracted from Antarctic Krill (Euphasia superba) |
topic_facet |
Norway lobster Nephrops norvegicus Head waste Lipid class Humrar Fitusýrur |
description |
In the UK, the Norway lobster (Nephrops norvegicus) supports its most important shellfish fishery. Nephrops are sold either whole, or as tails-only for the scampi trade. In the tailing process, the head (cephalothorax) is discarded as waste. A smaller crustacean species, the Antarctic krill Euphasia superba, represents an economically valuable industry, as its extractable oil is sold as a human dietary supplement. The aim of this study was to determine the amount and composition of the oil contained in discarded Nephrops heads and to compare its composition to the oil extracted from krill. Differences due to Geographical variation and seasonal patterns in the amount and composition of lipid were also noted. Results indicated that Nephrops head waste samples collected from more southern locations in Scotland (Clyde Sea area) contained higher levels of oil when compared to samples collected from northern locations in Iceland. Moreover, seasonal differences within the Clyde Sea area in Scotland were also observed, with oil extracted from Nephrops head waste peaking at around 11.5% during the summer months when larger and more mature females were caught by trawl. At this time of the year, the valuable fatty acids eicosapentaenoic acid (EPA) and docosahexaenoic acid (DHA) accounted for around 23% of the total fatty acid content in oil extracted from Nephrops head waste. A seasonal effect on EPA content was found, with higher levels obtained in the summer, while no trend was found in DHA percentages. Finally, oil from Nephrops head waste contained a higher proportion of EPA and DHA than krill oil but these fatty acids were more abundantly linked to the neutral lipids rather to than polar lipids. The characterization of lipid that could be extracted from Nephrops head waste should be seen as a first step for the commercial use of a valuable resource currently wasted. This approach is extremely relevant given the current limited supply of EPA and DHA and changes in the Common Fisheries Policy. This work was supported ... |
author2 |
Faculty of Life and Environmental Sciences (UI) Líf- og umhverfisvísindadeild (HÍ) Verkfræði- og náttúruvísindasvið (HÍ) School of Engineering and Natural Sciences (UI) Háskóli Íslands University of Iceland |
format |
Article in Journal/Newspaper |
author |
Albalat, Amaya Nadler, Lauren Foo, Nicholas Dick, James Watts, Andrew Philp, Heather Neil, Douglas Monroig, Oscar |
author_facet |
Albalat, Amaya Nadler, Lauren Foo, Nicholas Dick, James Watts, Andrew Philp, Heather Neil, Douglas Monroig, Oscar |
author_sort |
Albalat, Amaya |
title |
Lipid Composition of Oil Extracted from Wasted Norway Lobster (Nephrops norvegicus) Heads and Comparison with Oil Extracted from Antarctic Krill (Euphasia superba) |
title_short |
Lipid Composition of Oil Extracted from Wasted Norway Lobster (Nephrops norvegicus) Heads and Comparison with Oil Extracted from Antarctic Krill (Euphasia superba) |
title_full |
Lipid Composition of Oil Extracted from Wasted Norway Lobster (Nephrops norvegicus) Heads and Comparison with Oil Extracted from Antarctic Krill (Euphasia superba) |
title_fullStr |
Lipid Composition of Oil Extracted from Wasted Norway Lobster (Nephrops norvegicus) Heads and Comparison with Oil Extracted from Antarctic Krill (Euphasia superba) |
title_full_unstemmed |
Lipid Composition of Oil Extracted from Wasted Norway Lobster (Nephrops norvegicus) Heads and Comparison with Oil Extracted from Antarctic Krill (Euphasia superba) |
title_sort |
lipid composition of oil extracted from wasted norway lobster (nephrops norvegicus) heads and comparison with oil extracted from antarctic krill (euphasia superba) |
publisher |
MDPI AG |
publishDate |
2016 |
url |
https://hdl.handle.net/20.500.11815/384 https://doi.org/10.3390/md14120219 |
geographic |
Antarctic Norway The Antarctic |
geographic_facet |
Antarctic Norway The Antarctic |
genre |
Antarc* Antarctic Antarctic Krill Iceland |
genre_facet |
Antarc* Antarctic Antarctic Krill Iceland |
op_relation |
Marine Drugs;14(12) Albalat, A.; Nadler, L.E.; Foo, N.; Dick, J.R.; Watts, A.J.R.; Philp, H.; Neil, D.M.; Monroig, O. Lipid Composition of Oil Extracted from Wasted Norway Lobster (Nephrops norvegicus) Heads and Comparison with Oil Extracted from Antarctic Krill (Euphasia superba). Mar. Drugs 2016, 14, 219. doi:10.3390/md14120219 1660-3397 https://hdl.handle.net/20.500.11815/384 Marine Drugs doi:10.3390/md14120219 |
op_rights |
info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/20.500.11815/384 https://doi.org/10.3390/md14120219 |
container_title |
Marine Drugs |
container_volume |
14 |
container_issue |
12 |
container_start_page |
219 |
_version_ |
1766116709067915264 |