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Published on: January 20, 2023
Method optimisation for large scope pesticide multiresidue analysis in bee pollen: A pilot monitoring study
Maria Antonietta Carrera1, Lorena Manzano Sánchez2, María Murcia Morales2
1Department of Desertification and Geo-ecology, Experimental Station of Arid Zones, CSIC, Ctra. Sacramento s/n, La Cañada de San Urbano, 04120 Almería, Spain.
Abstract:
Pesticide contamination in emerging foods and supplements is currently a topic of great interest. This study focused on the evaluation of pesticide residues in commercial bee pollen samples to evaluate the risk associated with their consumption. To this end, an automated clean-up method for the pesticide extracts of bee pollen was developed. An LC-MS/MS and a GC-MS/MS method were validated for the analysis of 353 pesticides in 80 bee pollen samples purchased from different countries. The results showed the presence of 77 different pesticide residues in bee pollen, including plant protection chemicals and veterinary treatments. 85 % of the samples were contaminated with pesticides and no relevant differences were found between conventional and organic samples. Pesticide concentrations exceeding the imposed MRL were found in 40 % of the samples, but the risk assessment showed that consumers are not exposed to an unacceptable risk when consuming the evaluated bee pollen.
