In a recent publication (here), researchers from Tecnologico de Monterrey, Mexico, built a multivariate classification model for cereal bars based upon simultaneous ICP-MS analysis of 22 trace elements. The authors used the model as a relatively simple and quick analytical tool to verify the labelled variety of cereal bars (gluten free vs conventional, or whether the bars were based on yoghurt, chocolate or fruit). They did not explore the potential of the model to check for brand counterfeiting, which could widen the scope of applicability to any similar type of branded manufactured food.
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