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Título: | Low-Field Nuclear Magnetic Resonance of Proton (<sup>1</sup>H LF NMR) Relaxometry for Monitoring the Time and Temperature History of Frozen Hake (Merluccius merluccius L.) Muscle |
Autor: | Sánchez Valencia, Javier CSIC; Sánchez Alonso, Isabel CSIC ORCID ; Martínez, Iciar CSIC ORCID; Careche, Mercedes CSIC ORCID | Fecha de publicación: | 2015 | Editor: | Springer Nature | Citación: | Food and Bioprocess Technology 8: 2137- 2145 (2015) | Resumen: | © 2015, Springer Science+Business Media New York. The objective of the work was to investigate the potential of low-field nuclear magnetic resonance of protons (<sup>1</sup>H LF NMR) relaxometry to produce indicators useful in the estimation of the quality and shelf life of frozen hake (Merluccius merluccius L.) muscle as affected by storage temperature and time. <sup>1</sup>H low-field NMR T<inf>2</inf> transverse relaxation measurements were performed from fillets of a total of 145 hakes that had been stored at −10, −20, −30, or −80 °C for up to 150 weeks. The principal component (PC) scores from the <sup>1</sup>H LF NMR distribution of T<inf>2</inf> relaxation times were adjusted to zero-order kinetics and the reaction rates followed an Arrhenius-type pattern. Kinetic modeling using the PC scores of the 12–400-ms range resulted in the best model corresponding to both T<inf>21</inf> and T<inf>22</inf> regions. The temperature dependency of the rate of reactions, measured by B values, was similar to that previously found for shear resistance and for the hydrolysis of phospholipids, well-known markers related to the sensory quality in this species. Thus, our results suggest that this methodology has a great potential to evaluate the frozen storage time and temperature in hake as well as to provide an indication of the expected quality of the fillet. | URI: | http://hdl.handle.net/10261/123771 | DOI: | 10.1007/s11947-015-1569-x | Identificadores: | doi: 10.1007/s11947-015-1569-x issn: 1935-5149 |
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