Chemical Changes in Chilled Farmed Salmon (Oncorhynchus kisutch): Effect of Previous High Pressure Treatment
A. Rodríguez, I. Ortea, M. Trigo, Y. Sierra, J. M Gallardo, G. Tabilo-Munizaga, M. Pérez-Won, S. P Aubourghttps://doi.org/10.17221/630-CJFSCitation:Rodríguez A., Ortea I., Trigo M., Sierra Y., M Gallardo J., Tabilo-Munizaga G., Pérez-Won M., P Aubourg S. (2009): Chemical Changes in Chilled Farmed Salmon (Oncorhynchus kisutch): Effect of Previous High Pressure Treatment. Czech J. Food Sci., 27: S20-S22.
Coho salmon (Oncorhynchus kisutch) has recently attracted a great interest as a farmed product. This research focuses on its commercialisation as a chilled product. Thus, the effect of a previous hydrostatic high pressure (HHP) treatment on chemical changes related to quality loss was studied. A marked effect of HHP treatment was observed on lipid hydrolysis (free fatty acid formation), lipid oxidation (primary, secondary and tertiary compounds) and protein breakdown (sarcoplasmic fraction) throughout the chilling storage; however, no influence could be observed on nucleotide degradation and polyene index. Sensory analysis (putrid and amine odour development) showed a profitable effect of HHP on chilled salmon quality; however, no effect could be concluded on rancid odour development.Keywords:Coho salamon; high pressure; chilling; proteins; lipids; nucleatides