Effect of mechanically deboned poultry meat content on technological properties and sensory characteristics of lamb and mutton sausages

Abstract

Objective: This study aimed to develop a value-added product concerning technological and sensory characteristics changes of the use of mechanically deboned poultry meat (MDPM) as meat replacer in lamb and mutton emulsion-type sausages (mortadella).

Methods: Sausages were produced with lamb and mutton and with different contents of MDPM. Six treatments, using lamb or mutton and 0%, 30%, and 60% of MDPM in relation to the meat batter, were produced and analyzed for pH, proximal composition, calcium and residual nitrite content, water activity, 2-thiobarbituric acid reactive substances (TBARS), instrumental color and texture profile. The sensory profile of the mortadella's was also evaluated by acceptance test and check-all-that-applies (CATA) analysis.

Results: The MDPM addition increased (p<0.05) fat, residual nitrite and calcium content in the all sausage formulations, but mutton sausage had (p<0.05) higher fat and lower moisture content than lamb sausage. The pH, water activity, TBARS index and color was not affected by MDPM additions, while the mutton sausages were significantly redder (higher a*, C*, and lower h°) and darker (lower L*) than lamb sausages. Adding up to 60% of MDPM reduced (p<0.05) sausages hardness and chewiness. Overall, the meat replacement by MDPM increased the sausages acceptance, but the mutton sausage with 30% of MDPM replacer were the most preferred. Consumers related that pink color, glossy appearance, poultry meat-like taste, soft texture, juicy and greasy mouth feel to all sausages contain MDPM according to CATA analysis.

Conclusion: Mutton from culled ewes can be utilized for mortadella production with 30% replacement of lean mutton and fat by MDPM.

Keywords: Check-all-that-applies Analysis; Discarded Animals; Mortadella; Sheep Meat.

Figure 1

Internal preference maps (IPM) for the appearance, flavor, texture and overall impression of the sheep mortadella samples. The internal preference map for the Tri-plot (PARAFAC) of appearance, flavor and texture of the mortadella based on their consumer scores (shown as vectors in the plot) in the acceptance test is also shown. L, lamb sausage; M, mutton sausage; and 0, 30, 60, percentage of mechanically deboned poultry meat (MDPM) in relation to the meat batter (meat+pork fat).

Figure 2

External preference map (EPM) of the sensory terms on the check-all-that-apply (CATA) questionnaire for the sheep mortadella samples in the correlation matrix with overall consumer impression. L, lamb sausage; M, mutton sausage; and 0, 30, 60, percentage of mechanically deboned poultry meat (MDPM) in relation to the meat batter (meat+pork fat).