Know your fish: A novel compound-specific isotope approach for tracing wild and farmed salmon.
Food Chem
; 256: 380-389, 2018 Aug 01.
Article
em En
| MEDLINE
| ID: mdl-29606463
ABSTRACT
The rapid expansion of the aquaculture industry with carnivorous fish such as salmon has been accompanied by an equally rapid development in alternative feed ingredients. This has outpaced the ability of prevailing authentication method to trace the diet and origins of salmon products at the retail end. To close this gap, we developed a new profiling tool based on amino acid δ13C fingerprints. With this tool, we discriminated with high-accuracy among wild-caught, organically, and conventionally farmed salmon groups, as well as salmon fed alternative diets such as insects and macroalgae. Substitution of fishmeal with macroalgae was detected at 5% difference level. The δ13C fingerprints of essential amino acids appear particularly well suited for tracing protein sources, and the non-essentials for tracing lipid origins (terrestrial vs. aquatic). In an industry constantly developing new feed proteins and functional additives, our method is a promising tool for tracing salmon and other seafood products.
Palavras-chave
Alternative feed ingredients; Amino acid δ(13)C fingerprinting; Bulk δ(13)C and δ(15)N analyses; Compound specific isotope analyses; Fish diet reconstruction; Glycine (Gly); Histidine (His); Insect meal; Isoleucine (Ile); Leucine (Leu); Organically and conventionally farmed salmon; Phenylalanine (Phe); Proline (Pro); Seafood traceability and authentication; Seaweed meal; Serine (Ser); Tyrosine (Tyr); Valine (Val); Wild Atlantic and Pacific salmon
Texto completo:
1
Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Salmão
/
Isótopos de Carbono
/
Alimentos Marinhos
/
Análise de Alimentos
/
Ração Animal
Tipo de estudo:
Evaluation_studies
Limite:
Animals
Idioma:
En
Ano de publicação:
2018
Tipo de documento:
Article