The study highlights the relevance of including other organic contaminants in monitoring studies in food samples in addition to pesticides.ĭue to these beneficial properties, its production, exportation, and consumption have increased, leading to intensive cultivation.

PCB 101 was found in trace concentration (5.1 µg kg −1). The developed method was validated by analyzing samples collected from Douro Region. The assessment of the matrix effects showed enhancement for all the target compounds. The relative standard deviation for precision studies was less than 15%. Under the optimal conditions, satisfactory extraction efficiency was obtained with recoveries ranging from 90% to 122%, excellent sensitivity, with a quantification limit in the range of 0.6 to 7.4 µg kg −1, and good linearity ranging from 0.991 to 0.999. As there are no studies on the presence of multiple contaminants in kiwano, an optimized analytical method based on the QuEChERS for the evaluation of 30 multiple contaminants (18 pesticides, 5 polychlorinated biphenyls (PCB), 7 brominated flame retardants) was developed and validated. However, these fruits are scarcely studied in terms of chemical safety. The consumption of exotic and new fruits, such as kiwano, has increased due to their beneficial properties for human health. Global production of exotic fruits has been growing steadily over the past decade and expanded beyond the originating countries.

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