Assessment of Sorbate and Benzoate Content in Mustard, Ketchup and Tomato Sauce by Sub-Minute Capillary Electrophoresis

Research background. Sorbate and benzoate are important preservatives in food products, but these compounds can also have genotoxic effects, causing health risks to their consumers. In this regard, this study aims to determine the concentrations of sorbate and benzoate in Brazilian samples of mustard, ketchup and tomato sauce using a sub-minute capillary electrophoresis method adequately validated. Experimental approach. In this study, sorbate and benzoate were evaluated in sauces samples by capillary electrophoresis using a simple sample preparation procedure. Previously, the method was validated according to Eurachem guidelines, and its greenness was assessed by Eco-scale. Results and conclusions. The fitness for purpose of the method, as well as its suitability for the analysis of the studied matrixes and its agreement with the principles of green chemistry were checked and confirmed. Also, according to our findings, among the 30 commercial samples assessed, six of them presented some mislabelling or non-compliance with European or Brazilian legislation, reinforcing the constant need for quality assessment and surveillance of food products. Novelty and scientific contribution. So far, few studies have been found related to investigating these preservatives in these types of foods, highlighting the significance and contribution of this manuscript to the improvement of knowledge in the field.