Several authors (Montero
& Borderías, 1989; Johnston et al., 2006; Li et al., 2005) pointed
out the important role of collagen for the texture properties of fish,
related to differences in the collagen molecule or in the relationship
between different collagen molecules. A recent study by
Torgersen et al. (2014) revealed myofibre–myofibre detachments
and disappearance of the endomysium in soft salmon muscles,
coinciding with deterioration of important connective tissue constituents,
such as collagen type I (Col I). In the present study, however,
the texture of both the FP and WP was considered to be
within an acceptable level.