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Título

New icing media for quality enhancement of chilled hake (Merluccius merluccius) using a jumbo squid (Dosidicus gigas) skin extract

AutorEzquerra-Brauer, Josafat; Miranda, José M.; Chan-Higuera, Jesús Enrique; Barros-Velázquez, J. ; Aubourg, Santiago P.
Fecha de publicación2017
EditorJohn Wiley & Sons
CitaciónJournal of the Science of Food and Agriculture 97(10): 3412-3419 (2017)
Resumen[Background] An advanced strategy for chilled fish preservation, based on the inclusion in ice of an extract of jumbo squid (Dosidicus gigas) skin (JSS), is proposed. Aqueous solutions including acetic acid–ethanol extracts of JSS were tested at two different concentrations as icing media, with the effects on the quality evolution of chilled hake (Merluccius merluccius) being monitored.
[Results] A significant inhibition (P < 0.05) of microbial activity (aerobes, psychrotrophs, Enterobacteriaceae, proteolytic bacteria; pH, trimethylamine) was obtained in hake corresponding to the icing batch including the highest JSS concentration. Additionally, fish specimens from such icing conditions showed an inhibitory effect (P < 0.05) on lipid hydrolysis development, while no effect (P > 0.05) was depicted for lipid oxidation. Sensory analysis (skin and mucus development; eyes; gills; texture; external odour; raw and cooked flesh odour; flesh taste) indicated a shelf life extension of chilled hake stored in ice including the highest JSS concentration.
[Conclusion] A profitable use of JSS, an industrial by-product during jumbo squid commercialisation, has been developed in the present work, which leads to a remarkable microbial inhibition and a significant shelf life extension of chilled hake. In agreement with previous research, ommochrome pigments (i.e. lipophilic-type compounds) would be considered responsible for this preservative effect. © 2016 Society of Chemical Industry
Descripción8 páginas, 5 tablas, 2 figuras
Versión del editorhttp://dx.doi.org/10.1002/jsfa.8192
URIhttp://hdl.handle.net/10261/152271
DOI10.1002/jsfa.8192
ISSN0022-5142
E-ISSN1097-0010
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