Dietary tools to modulate glycogen storage in gilthead seabream muscle: glycerol supplementation. | - CCMAR -

Journal Article

TítuloDietary tools to modulate glycogen storage in gilthead seabream muscle: glycerol supplementation.
Publication TypeJournal Article
AuthorsSilva, TS, Matos, E, Cordeiro, OD, Colen, R, Wulff, T, Sampaio, E, Sousa, V, Valente, LMP, Gonçalves, A, Silva, JMG, Bandarra, N, Nunes, MLeonor, Dinis, MTeresa, Dias, J, Jessen, F, Rodrigues, P
Year of Publication2012
JournalJ Agric Food Chem
Volume60
Questão42
Date Published2012 Oct 24
Pagination10613-24
ISSN1520-5118
Palavras-chaveAnimals, Colorimetry, Diet, Dietary Supplements, Glycerol, Glycogen, Muscles, Sea Bream
Abstract

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.

DOI10.1021/jf3023244
Sapientia

http://www.ncbi.nlm.nih.gov/pubmed/22994592?dopt=Abstract

Alternate JournalJ. Agric. Food Chem.
PubMed ID22994592