Abstract
Due to food safety concerns, the European Food Safety Authority (EFSA) asked to identify useful parameters for identifying the mechanically separated meat (MSM). In this work, the 90Sr levels of MSM products were assessed for evaluating the suitability of this parameter for MSM identification. Indeed, this contaminant may accumulate in animal bones and bone fragments may be present in MSM. One hundred samples of fresh meats and meat products composed of different MSM percentages and without MSM were analyzed by ultra-low-level liquid scintillation counting. The 90Sr activity concentrations detected in meat products with high percentage of MSM were significantly higher (p ≥ 0.05) (0.099Bqkg-1) than those of fresh meats (0.024Bqkg-1) and meat products containing low percentage of MSM (0.011Bqkg-1). The percentage of correct MSM identification was 61%. In order to increase this percentage and to develop a new tool of investigation, the 90Sr was elaborated in combination with other three parameters: 88Sr, Ca and ash percentage, through a multivariate approach. The precision of this tool of investigation was significantly increased (87%), higher than the reference method (Ca level) (76%), representing a valid novel approach in the identification of MSM products.
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