MODELING OF SALT DIFFUSION IN ATLANTIC SALMON MUSCLE

A finite difference model was developed to predict salt concentration in post-rigor Atlantic salmon (Salmo salar) muscle during salting in 2 0% (w/v) brine at 10 degrees C. The model was validated by experimenta l salt uptake data and salt diffusivity was estimated by minimizing th e mean sum of the squares of the deviations between the observed and p redicted salt uptake. The salt diffusivity, D, was salt concentration dependent: D = (1.08 + 0.59C) x 10(-10) m(2)/s for salt concentration, C, from 0.012 to 0.748 kg/kg salt-free solids.