La revue Viandes et produits carnés

La revue française de la recherche en viandes et produits carnés  ISSN  2555-8560

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Characterization of the technological quality of culled sow meat.

Effect of adding lean sow content to dry-cured sausage forcemeats on end-product time–course and quality characteristics.

Here we led a quality study on sow meat and on dry-cured sausage formulations prepared with varying proportions of lean sow content. We followed a population of 280 culled sows from the pig abattoir to the meatcutting station and carried out a series of meat quality measurements (backfat thickness, ultimate pH, colorimetry and drip loss) on the cuts. We also led chemical composition analyses on a subset of 90 sows (protein content, lipid content, moisture content, collagen content, heat-soluble collagen content). Culled sow meat in this study was rarely low-pH but we found 10%–30% DFD or DFD-like meat and 70% normal-quality meat (i.e. in the range pH 5.6–pH 6). We found very long preslaughter fasting periods, averaging 39 hours and up to 55 hours. Pre-slaughter fasting period had a significant influence on both drip loss and pHu. The culled sow meat was relatively dark, which correlated to measured pHu levels. This research confirms the effect of age on the proportion of heat-soluble collagen, which was found to decrease with increasing age due to increased collagen crosslinking.
The dry-sausage forcemeats were prepared in 4 series containing increasing proportions of sow lean content (0, 35%, 70%, and 100%). The end-product dry cured sausages containing lean sow content were characterized by significantly better elasticity, cohesiveness and chewability which translates into a more consistent and better-bound texture. This improved sausage binding comes from the higher pH of sow meat indicating stronger functionalization of the myofibrillar protein component.


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