Continuous flow isotope ratio mass spectrometry (CF-IRMS) has been used to analyze samples of gilthead sea bream (g.s.b.) (Sparus aurata) of known geographical origin (four countries on the Mediterranean Sea) from wild and farmed sources (40 farmed and 10 wild). 13C and 15N values have been measured on muscle samples as these are the most informative parameters of the diet of the animals. Both stable isotopes are indicators of the origin of the fish: 13C giving a tool to distinguish between wild and farmed g.s.b. and 15N being more informative on the geographical origin of the fish (this fact could be related more to differences in feed mixtures given to farmed fish than to geographical reasons). The proposed methodology offers a cost- and time-effective alternative to other analytical techniques in identifying wild and farmed fish.
|Titolo:||The use of stable isotope ratio analyses to discriminate wild and farmed gilthead sea bream (Sparus aurata)|
|Autori interni:||MORETTI, VITTORIO MARIA|
|Settore Scientifico Disciplinare:||Settore AGR/19 - Zootecnica Speciale|
|Data di pubblicazione:||2007|
|Digital Object Identifier (DOI):||10.1002/rcm.2836|
|Appare nelle tipologie:||01 - Articolo su periodico|