Dry brining and liquid smoking protect the outside color of salmon against changes caused by HHP. The increase in hardness may counteract the softening of the smoked salmon tissue over time.
King salmon (Oncorhynchus tschawytscha, Walbaum, 1792) samples from the top, belly and tail parts of fillets were brined (8% salt wet brine WB, salt dry brine S, 1:1 brown sugar : salt dry brine DB) for 18 h, and dipped in liquid smoke (LS) for 3 mins. S and DB significantly reduced moisture content and aw after brine, while WB increased moisture content. Therefore, yield decreased with S and DB, while it increased with WB. Color was measured by image analysis. S and DB reduced average L* (darker) while increasing a* and b* (more saturated color). Conversely WB increased L* and reduced a* and b*. LS increased a* and b*, both after 1st and 2nd dipping. Color non‐homogeneity (CCI) increased after S and DB, while decreasing after WB. Visual texture (TCI) increased after S, but decreased after WB and DB. LS application reduced both CCI and TCI. There were significant differences in texture profile analysis parameters due to sample location, and due to treatments. Hardness increased four times after S, and three times after DB, while it did not change after WB.
It is possible to modulate the final moisture content, aw, color, visual attributes, and texture by applying different brining methods, and LS dipping regimes for smoked King salmon.
Practical Applications
Different brining methods allow control of moisture content, water activity, and texture of salmon. There is also a change in color. Liquid smoke dipping enables control of color, when considered together with the brining method. Liquid smoke also affects texture of wet brined salmon. Therefore, modulation of different physical properties is possible by applying brining and liquid smoke dipping combinations.
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