| Year |
2008 |
| Abstract |
The effect of Atlantic salmon (Salmo salar) raw material handling (pre-rigor, post-rigor and frozen/thawed) on water mobility and salt uptake after brine salting (16 w/w % NaCl for 4 h) were investigated by LF 1H NMR, 1H and 23Na MRI and light microscopy. Light microscopy demonstrated structural differences between raw materials, however, no significant differences in fiber diameter were found. MR imaging revealed significant differences in salt uptake between raw materials, frozen/thawed fillets gained most salt, whereas pre-rigor salted fillets gained least. The most even salt distribution was obtained in frozen/thawed fillets. The LF NMR T2 relaxation revealed two main water pools in all raw materials, T21, with relaxation times in the range 20-100 ms and T22, with relaxation times in the range 100-300 ms, and that there were pronounced differences in water mobility between the raw materials. Salting induced an increase in water mobility for prerigor fillets, whereas the opposite tendency was seen for frozen/thawed fillets. In post rigor fillets the water mobility remained unchanged. |
| Reference |
Aursand, I.G., Veliyulin, E., Böcker, U., Ofstad, R., Rustad, T., Erikson, U. 2009. Water and salt distribution in Atlantic salmon (Salmo salar) studied by low-field 1H NMR, 1H and 23Na MRI and light microscopy: Effects of raw material quality and brine salting. Journal of Agricultural and Food Chemistry, Vol 57, pp 46-54. |
| Publisher |
Journal of Agricultural and Food Chemistry, |
Ulrike Böcker
Ragni Ofstad
