LotaV3, Main, Exploration, bibRecord, 000038

Fatty acid composition of freshwater wild fish in subalpine lakes: a comparative study.

Identifieur interne : 000038 ( Main/Exploration ); précédent : 000037; suivant : 000039

Fatty acid composition of freshwater wild fish in subalpine lakes: a comparative study.

Auteurs : Mauro Vasconi [Italie] ; Fabio Caprino ; Federica Bellagamba ; Maria Letizia Busetto ; Cristian Bernardi ; Cesare Puzzi ; Vittorio Maria Moretti

Source :

Lipids [ 1558-9307 ] ; 2015.

RBID : pubmed:25519933

Descripteurs français

KwdFr :
- Acides gras (analyse), Animaux (MeSH), Eau douce (MeSH), Lacs (MeSH), Muscles (composition chimique), Poissons (métabolisme).
MESH :
- analyse : Acides gras.
- composition chimique : Muscles.
- métabolisme : Poissons.
- Animaux, Eau douce, Lacs.

English descriptors

KwdEn :
- Animals (MeSH), Fatty Acids (analysis), Fishes (metabolism), Fresh Water (MeSH), Lakes (MeSH), Muscles (chemistry).
MESH :
- chemical , analysis : Fatty Acids.
- chemistry : Muscles.
- metabolism : Fishes.
- Animals, Fresh Water, Lakes.

Abstract

In this study, the proximate and fatty acid compositions of the muscle tissue of 186 samples of fish belonging to fifteen species of freshwater fish harvested in subalpine lakes (bleak, shad, crucian carp, whitefish, common carp, pike, black bullhead, burbot, perch, Italian roach, roach, rudd, wels catfish, chub and tench) were investigated. Most of the fish demonstrated a lipid content in the fillet lower than 2.0 g 100 g(-1) wet weight (range 0.6-9.7). A strong relationship between feeding behavior and fatty acid composition of the muscle lipids was observed. Planktivorous fish showed the lowest amounts of n-3 fatty acids (p < 0.05), but the highest monounsaturated fatty acid (MUFA) contents, in particular 18:1n-9. Conversely, carnivorous fish showed the highest amounts of saturated fatty acids and n-3 fatty acids (p < 0.05), but the lowest MUFA contents. Omnivorous fish showed substantial proportions of n-3 fatty acids and the highest contents of n-6 fatty acids. Principal component analysis showed a distinct separation between fish species according to their feeding habits and demonstrated that the most contributing trophic markers were 18:1n-9, 18:3n-3, 22:6n-3 and 20:4n-6. The quantitative amounts n-3 polyunsaturated fatty acid in muscle tissues varied depending on the fish species, the lipid content and the feeding habits. Some species were very lean, and therefore would be poor choices for human consumption to meet dietary n-3 fatty acid requirements. Nevertheless, the more frequently consumed and appreciated fish, shad and whitefish, had EPA and DHA contents in the range 900-1,000 mg 100 g(-1) fresh fillet.

DOI: 10.1007/s11745-014-3978-4
PubMed: 25519933

Affiliations:

Le document en format XML

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<front><div type="abstract" xml:lang="en">In this study, the proximate and fatty acid compositions of the muscle tissue of 186 samples of fish belonging to fifteen species of freshwater fish harvested in subalpine lakes (bleak, shad, crucian carp, whitefish, common carp, pike, black bullhead, burbot, perch, Italian roach, roach, rudd, wels catfish, chub and tench) were investigated. Most of the fish demonstrated a lipid content in the fillet lower than 2.0 g 100 g(-1) wet weight (range 0.6-9.7). A strong relationship between feeding behavior and fatty acid composition of the muscle lipids was observed. Planktivorous fish showed the lowest amounts of n-3 fatty acids (p < 0.05), but the highest monounsaturated fatty acid (MUFA) contents, in particular 18:1n-9. Conversely, carnivorous fish showed the highest amounts of saturated fatty acids and n-3 fatty acids (p < 0.05), but the lowest MUFA contents. Omnivorous fish showed substantial proportions of n-3 fatty acids and the highest contents of n-6 fatty acids. Principal component analysis showed a distinct separation between fish species according to their feeding habits and demonstrated that the most contributing trophic markers were 18:1n-9, 18:3n-3, 22:6n-3 and 20:4n-6. The quantitative amounts n-3 polyunsaturated fatty acid in muscle tissues varied depending on the fish species, the lipid content and the feeding habits. Some species were very lean, and therefore would be poor choices for human consumption to meet dietary n-3 fatty acid requirements. Nevertheless, the more frequently consumed and appreciated fish, shad and whitefish, had EPA and DHA contents in the range 900-1,000 mg 100 g(-1) fresh fillet.</div>
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Fatty acid composition of freshwater wild fish in subalpine lakes: a comparative study.

Fatty acid composition of freshwater wild fish in subalpine lakes: a comparative study.

Source :

Descripteurs français

English descriptors

Abstract

Links toward previous steps (curation, corpus...)

Le document en format XML

Pour manipuler ce document sous Unix (Dilib)

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