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Título: | Effect of advanced chilling methods on lipid damage during sardine (Sardina pilchardus) storage |
Autor: | Losada, Vanesa CSIC; Barros-Velázquez, Jorge CSIC ORCID; Gallardo, José Manuel CSIC; Aubourg, Santiago P. CSIC ORCID | Palabras clave: | Sardine Chilled storage Slurry ice Ozone Lipid hydrolysis and oxidation Quality Shelf life |
Fecha de publicación: | 2004 | Editor: | John Wiley & Sons | Citación: | European Journal of Lipid Science and Technology 106(12): 844-850 (2004) | Resumen: | Slurry ice is a biphasic system consisting of small spherical ice crystals surrounded by seawater at subzero temperature. Its effect on lipid damage (hydrolysis and oxidation) was evaluated during the chilled storage of a fatty fish species, sardine (Sardina pilchardus). Slurry ice treatment was checked alone and in combination with ozone and compared to traditional flake icing during a 22-day storage. Different lipid damage indices (free fatty acids, FFA; peroxide value, PV; thiobarbituric acid index, TBA-i; fluorescent compounds, FR) were checked and compared to sensory assessment and nucleotide degradation (K value). According to lipid hydrolysis (FFA) and oxidation (PV and FR) developments, slurry ice showed an inhibitory effect (p <0.05) on lipid damage during storage, as well as an inhibition of nucleotide autolytic degradation. Ozonised slurry ice did not provide differences (p >0.05) from slurry ice alone when considering lipid hydrolysis, nucleotide degradation and some lipid oxidation indices (PV and FR), although a higher (p <0.05) TBA-i was observed at day 22 of storage when compared to flake ice and slurry ice treatments. However, a lower (p <0.05) fluorescence development was observed for fish treated under ozonised slurry ice when compared to traditionally iced fish. Sensory assessment showed a higher shelf life for fish samples treated under ozonised slurry ice than for their counterparts under slurry ice (15 d versus 12 d), while flake icing led to a far shorter shelf life (5 d). According to sensory and biochemical (lipid matter and nucleotide) analysis, slurry ice has proved to be a promising technology for damage inhibition and quality retention in a fatty fish species such as sardine. Ozonised slurry ice was also shown to be useful, since a longer shelf life was obtained in the present experiment and a pro-oxidant effect of ozone on sardine lipids was not proved | Descripción: | 7 páginas, 2 figuras, 4 tablas | Versión del editor: | http://dx.doi.org/10.1002/ejlt.200400991 | URI: | http://hdl.handle.net/10261/51897 | DOI: | 10.1002/ejlt.200400991 | ISSN: | 1438-7697 | E-ISSN: | 1438-9312 |
Aparece en las colecciones: | (IIM) Artículos |
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Effect_advanced_chilling.pdf | 279 kB | Adobe PDF | Visualizar/Abrir |
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