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Effect of high pressure processing of Atlantic mackerel (Scomber scombrus) on biochemical changes during commercial frozen storage

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https://ir.library.oregonstate.edu/concern/articles/rn301593k

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  • This research focuses on biochemical changes related to quality losses observed in Atlantic mackerel (Scomber scombrus) muscle stored under commercial frozen storage conditions (9 months, -18 ºC) when subjected to high-hydrostatic pressure (HHP) treatments (125, 150, 175 and 200 MPa for 0 min) before freezing. After freezing, free fatty acid (FFA) formation (lipid hydrolysis assessment) showed a marked inhibition in HHP-treated fish and during frozen storage of samples treated at 175 MPa. Fluorescence ratio (FR) assessment of tertiary lipid oxidation showed a partial inhibitory effect during the 0-9-month period for samples treated at 175 and 200 MPa. After 3 months storage of samples treated at these pressure levels, one-dimensional SDS-PAGE analysis of the sarcoplasmic protein fraction revealed the disappearance of a band; while samples treated at 150 MPa showed the same effect at month 9. After gel excision, trypsin digestion, tandem mass spectrometry (MS/MS) and sequence database analysis, the band was identified as phosphoglycerate mutase 2 (28.7 kDa). On the other hand, HHP processing did not show a significant effect on trimethylamine (TMA) values, primary and secondary lipid oxidation, PUFA levels, 1-D myofibril protein pattern and the activity of acid phosphatase and cathepsins B and D. Biochemical quality indices such as FFA, TMA, and FR, and the activity of acid phosphatase and cathepsin B showed a progressive increase throughout the frozen storage of all samples.
  • Keywords: Lipids, Enzymes, Frozen storage, Proteins, Scomber scombrus, High pressure processing
  • Keywords: Lipids, Enzymes, Frozen storage, Proteins, Scomber scombrus, High pressure processing
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  • Plazos, M., Méndez, L., Fidalgo, L., Vázquez, M., Torres, J. A., Aubourg, S. P., & Saraiva, J. A. (2015). Effect of high pressure processing of Atlantic mackerel (Scomber scombrus) on biochemical changes during commercial frozen storage. Food and Bioprocess Technology, 8(10), 2159-2170. doi:10.1007/s11947-015-1567-z
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  • 8
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  • 10
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  • The Xunta de Galicia and the European Social Fund are thankfully recognized for the financial support of the postdoctoral “Isidro Parga Pondal” contract to M. P. The Spanish Ministry of Science and Innovation is also gratefully acknowledged for the doctoral fellowship to L. M.This work was supported by the Secretaría Xeral de I+D from the Xunta de Galicia (Galicia, Spain) through the Research Project 10TAL402001PR (2010-2012), by Fundação para a Ciência e a Tecnologia (FCT Portugal), European Union, QRN, FEDER, COMPETE through founding of the Organic Chemistry Research Unit (QOPNA) (project PEst-C/QUI/UI0062/2013; FCOMP-01-0124-FEDER-037296), and by Formula Grants no. 2011-31200-06041 and 2012-31200-06041 from the USDA National Institute of Food and Agriculture.
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