Fatty acid composition, oxidative stability, and sensory evaluation of the sausages produced from the meat of pigs fed a diet enriched with 8% of fish oil

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Abstract
The objective of the present study was to increase by dietary means the long‐chain polyunsaturated fatty acid (LC‐PUFA) n‐3 content in selected meat products. Fatty acid (FA) composition, texture, sensory characteristics, and oxidative stability were determined in the Vienna sausages (V‐sausages) and Bologna‐type salami (B‐salami) produced from the meat of six pigs fed a standard feed (control, C) and six pigs fed a standard feed enriched with 8% of fish oil (F), respectively. The saturated FA content in the unheated FV and FB products was decreased ( p  < 0.05) by 24% and 39%, PUFA n‐6/n‐3 ratio improved ( p < 0.001) from 13.9 to 2.8 and from 13.5 to 2.6, respectively. LC‐PUFA n‐3 content in the VF and BF products was 360 and 214 mg/100 g, which corresponds to 80% and 48% of the recommended daily intake. Interestingly, dietary fish oil decreased ( p < 0.01) instrumentally the measured core hardness of the V‐sausages, but increased ( p < 0.001) this texture characteristic in the B‐salami. Malondialdehyde content in the VF and BF products increased ( p < 0.05) on average by 23% and the flavor of the heated FV sausages scored lower ( p < 0.05) in comparison with the C‐counterparts.

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