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  • Title: Freezing of meat raw materials affects tyramine and diamine accumulation in spontaneously fermented sausages.
    Author: Bover-Cid S, Miguelez-Arrizado MJ, Luz Latorre Moratalla L, Vidal Carou MC.
    Journal: Meat Sci; 2006 Jan; 72(1):62-8. PubMed ID: 22061375.
    Abstract:
    Biogenic amine accumulation was studied in spontaneously fermented sausages (Fuet) manufactured from unfrozen-fresh meat (U-sausages) and frozen-thawed meat (F-sausages). The aim was to investigate whether the frozen storage of raw materials affects the microbial composition and its aminogenic activity during sausage fermentation. Tyramine was the major amine in all sausages. Although the final levels were similar, tyramine accumulated more rapidly in F-sausages, which contained putrescine as the second amine. By contrast, U-sausages accumulated much more cadaverine than putrescine. F-sausages showed a slightly lower pH and free amino acid content as well as higher counts of technological flora (lactic acid and gram positive catalase positive bacteria) and lower counts of enterobacteria. Therefore, to freeze the meat raw materials for few days before sausage manufacture could be a useful practice, especially for the artisan fermented sausages (without starter), because it helps to reduce enterobacteria development and cadaverine production.
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