Abstract
Low-field 1 H nuclear magnetic resonance transverse relaxation was used to measure water mobility and distribution in cod stored at −20°C or −30°C for up to 12 months and subsequently from 0 to 21 days in modified atmosphere at +2°C. The relaxation profiles were decomposed by parallel factor analysis resulting in four first-order relaxation curves from which the relative water pool sizes and the transverse relaxation times (T2) were calculated. The T2-values of the four identified water pools were 37 ms, 56 ms, 126 ms and 361 ms, respectively. The relative size of the water pools, but not the relaxation times, depended on the frozen storage temperature and on the chilled storage period.
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