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 Eu...
Published in: | Marine Drugs |
---|---|
Main Authors: | , , , , , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
MDPI AG
2016
|
Subjects: | |
Online Access: | https://doi.org/10.3390/md14120219 https://doaj.org/article/8165ec6ed0474fb4990e08644e5fe63e |
id |
ftdoajarticles:oai:doaj.org/article:8165ec6ed0474fb4990e08644e5fe63e |
---|---|
record_format |
openpolar |
spelling |
ftdoajarticles:oai:doaj.org/article:8165ec6ed0474fb4990e08644e5fe63e 2023-05-15T13:40:50+02:00 Lipid Composition of Oil Extracted from Wasted Norway Lobster (Nephrops norvegicus) Heads and Comparison with Oil Extracted from Antarctic Krill (Euphasia superba) Amaya Albalat Lauren E. Nadler Nicholas Foo James R. Dick Andrew J. R. Watts Heather Philp Douglas M. Neil Oscar Monroig 2016-12-01T00:00:00Z https://doi.org/10.3390/md14120219 https://doaj.org/article/8165ec6ed0474fb4990e08644e5fe63e EN eng MDPI AG http://www.mdpi.com/1660-3397/14/12/219 https://doaj.org/toc/1660-3397 1660-3397 doi:10.3390/md14120219 https://doaj.org/article/8165ec6ed0474fb4990e08644e5fe63e Marine Drugs, Vol 14, Iss 12, p 219 (2016) Norway lobster Nephrops norvegicus head waste lipid class EPA DHA Biology (General) QH301-705.5 article 2016 ftdoajarticles https://doi.org/10.3390/md14120219 2022-12-30T23:54:25Z 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. Article in Journal/Newspaper Antarc* Antarctic Antarctic Krill Iceland Directory of Open Access Journals: DOAJ Articles Antarctic Norway The Antarctic Marine Drugs 14 12 219 |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
Norway lobster Nephrops norvegicus head waste lipid class EPA DHA Biology (General) QH301-705.5 |
spellingShingle |
Norway lobster Nephrops norvegicus head waste lipid class EPA DHA Biology (General) QH301-705.5 Amaya Albalat Lauren E. Nadler Nicholas Foo James R. Dick Andrew J. R. Watts Heather Philp Douglas M. Neil Oscar Monroig 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 EPA DHA Biology (General) QH301-705.5 |
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. |
format |
Article in Journal/Newspaper |
author |
Amaya Albalat Lauren E. Nadler Nicholas Foo James R. Dick Andrew J. R. Watts Heather Philp Douglas M. Neil Oscar Monroig |
author_facet |
Amaya Albalat Lauren E. Nadler Nicholas Foo James R. Dick Andrew J. R. Watts Heather Philp Douglas M. Neil Oscar Monroig |
author_sort |
Amaya Albalat |
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://doi.org/10.3390/md14120219 https://doaj.org/article/8165ec6ed0474fb4990e08644e5fe63e |
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_source |
Marine Drugs, Vol 14, Iss 12, p 219 (2016) |
op_relation |
http://www.mdpi.com/1660-3397/14/12/219 https://doaj.org/toc/1660-3397 1660-3397 doi:10.3390/md14120219 https://doaj.org/article/8165ec6ed0474fb4990e08644e5fe63e |
op_doi |
https://doi.org/10.3390/md14120219 |
container_title |
Marine Drugs |
container_volume |
14 |
container_issue |
12 |
container_start_page |
219 |
_version_ |
1766141054472421376 |