Journal article
Dietary Tools To Modulate Glycogen Storage in Gilthead Seabream Muscle: Glycerol Supplementation
CIMAR/CCMAR, Centre of Marine Sciences of Algarve1
DTU Food, National Food Institute, Division of Industrial Food Research2
CIMAR/CIIMAR, Interdisciplinary Centre of Marine and Environmental Research and ICBAS, Institute of Biomedical Sciences Abel Salazar3
Unit of Innovation of Fish and Aquaculture Products, Av. de Brasília, 1449-006, Lisboa, Portugal4
REQUIMTE, Laboratory of Toxicology, Department of Biological Sciences, Faculty of Pharmacy5
The quality and shelf life of fish meat products depend on the skeletal muscle’s energetic state at slaughter, as meat decomposition processes can be exacerbated by energy depletion. In this study, we tested dietary glycerol as a way of replenishing muscle glycogen reserves of farmed gilthead seabream.
Two diets were tested in duplicate (n = 42/tank). Results show 5% inclusion of crude glycerol in gilthead seabream diets induces increased muscle glycogen, ATP levels and firmness, with no deleterious effects in terms of growth, proximate composition, fatty acid profile, oxidative state, and organoleptic properties (aroma and color).
Proteomic analysis showed a low impact of glycerol-supplementation on muscle metabolism, with most changes probably reflecting increased stress coping capacity in glycerol-fed fish. This suggests inclusion of crude glycerol in gilthead seabream diets (particularly in the finishing phase) seems like a viable strategy to increase glycogen deposition in muscle without negatively impacting fish welfare and quality.
Language: | English |
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Publisher: | American Chemical Society |
Year: | 2012 |
Pages: | 10613-10624 |
ISSN: | 15205118 and 00218561 |
Types: | Journal article |
DOI: | 10.1021/jf3023244 |