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  • Title: [The dissemination of Salmonella by meat and meat products from swine].
    Author: Schmidt U.
    Journal: Tierarztl Prax; 1986; 14(4):565-73. PubMed ID: 3824372.
    Abstract:
    Pork and pork products which are consumed raw, e.g. mincemeat or fresh Bologna sausage, are relatively often contaminated with salmonellae. In the average of one year we detected salmonellae in about 5% of the samples investigated. Due to seasonal and local influences up to 45% of the minced meat samples can be positive for salmonellae. In minced meat salmonellae grow only at temperatures above 7 degrees C. During frozen storage of meat for several weeks, the salmonella count decreases on an average of about 50%. A damaging of surviving salmonellae by the freezing and thawing process was not observed. On the contrary, in thawed mincemeat stored at 8 degrees C the growth of salmonellae is stimulated, i.e. they grow better than in mincemeat not frozen before. Growth of salmonellae in Bologna sausage ("frische Mettwurst") can be inhibited by adding of at least 2.5% nitrit curing salt, 0.3% glucono-delta-lactone, and lactic acid starter cultures, even if the product is stored at temperatures up to 25 degrees C. Likewise in spreadible and sliceable fermented sausage ("streichfähige und schnittfeste Rohwurst") no growth of salmonellae is to be expected, if a similar technology secures a sufficient microbiological stability during the ripening and smoking process. Therefore, the dissemination of salmonellae by pork and pork products can be avoided by technological measures, but also by a reasonable conduct of the consumer in the household.
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