title: Comparison among different gilthead sea bream (Sparus aurata) farming systems: activity of intestinal and hepatic enzymes and 13C-NMR analysis of lipids.
abstract: In order to evaluate differences in general health and nutritional values of gilthead sea bream (Sparus aurata), the effects of semi-intensive, land-based tanks and sea-cages intensive rearing systems were investigated, and results compared with captured wild fish. The physiological state was determined by measuring the activity of three different intestinal digestive enzymes: alkaline phosphatase (ALP), leucine aminopeptidase (LAP) and maltase; and the activity of the hepatic ALP. Also, the hepatic content in protein, cholesterol, and lipid were assessed. 13C-NMR analysis for qualitative and quantitative characterization of the lipid fraction extracted from fish muscles for semi-intensive and land based tanks intensive systems was performed. The lipid fraction composition showed small but significant differences in the monounsaturated/saturated fatty acid ratio, with the semi-intensive characterized by higher monounsaturated and lower saturated fatty acid content with respect to land based tanks intensive rearing system.
authors.affiliation: Dipartimento di Scienze e Tecnologie Biologiche ed Ambientali, Università del Salento, Prov.le Lecce-Monteroni, 73100, Lecce, Italy. laura.delcoco@gmail.com
authors.forename: Laura
authors.initials: L
authors.lastname: Del Coco
authors.forename: Paride
authors.initials: P
authors.lastname: Papadia
authors.forename: Sandra A De
authors.initials: SA
authors.lastname: Pascali
authors.forename: Giorgia
authors.initials: G
authors.lastname: Bressani
authors.forename: Carlo
authors.initials: C
authors.lastname: Storelli
authors.forename: Vincenzo
authors.initials: V
authors.lastname: Zonno
authors.forename: Francesco Paolo
authors.initials: FP
authors.lastname: Fanizzi
mesh_terms: D000818:Animals; D017756:Aquaculture / Q000379:methods*; D002247:Carbon Isotopes; D002784:Cholesterol / Q000737:chemistry; D007422:Intestines / Q000201:enzymology*; D008055:Lipids / Q000737:chemistry; D008099:Liver / Q000201:enzymology*; D009682:Magnetic Resonance Spectroscopy / Q000379:methods*; D009124:Muscle Proteins / Q000737:chemistry / Q000378:metabolism; D018482:Muscle, Skeletal / Q000737:chemistry / Q000378:metabolism; D021541:Sea Bream / Q000502:physiology*
chemical_list: D002247:Carbon Isotopes; D008055:Lipids; D009124:Muscle Proteins; D002784:Cholesterol