Pesticide residues in herbs and their transfer for infusions

Autor(es)

Caldeirao, Lucas ; Godoy, Helena Teixeira ; Fernandes, Jose ; Cunha, Sara C. C.

• Tipo de documento: Artigo Científico
• Fonte: JOURNAL OF SEPARATION SCIENCE; v. 46, n. 16, p. 12-pg., 2023-06-04.

Resumo

In this work, a cost-effective gas chromatography-mass spectrometry method was validated for the analysis of twenty-five pesticide residues in herbs and infusions using a quick, easy, cheap, effective, rugged, and safe procedure or a dispersive liquid-liquid microextraction method, respectively. Figures of merit of the method showed good accordance with current guidelines. From the 58 herb samples studied (pertaining to 20 different species), 80% presented at least one detectable pesticide, with 62% of them above the maximum residual level. Results showed that pesticide residues from naturally contaminated herbs were not transferred at a significant rate to the herbal infusions. When a control assay was conducted by spiking a blank herb sample with a large amount of each pesticide (7 mg/L) 15 analytes were detected below the limit of quantification in the infusion. (AU)

• Processo FAPESP: 18/25746-9 - Aplicação de solventes eutéticos profundos em técnica de preparo de amostra para determinação de contaminantes em chás prontos para beber
• Beneficiário: Lucas Caldeirão Rodrigues Miranda
• Modalidade de apoio: Bolsas no Exterior - Estágio de Pesquisa - Doutorado
• Processo FAPESP: 17/11635-8 - Resíduos e contaminantes em alimentos infantis e mamadeiras: desenvolvimento e validação de métodos analíticos
• Beneficiário: Helena Teixeira Godoy
• Modalidade de apoio: Auxílio à Pesquisa - Regular
• Processo FAPESP: 17/05048-2 - Plantas tradicionalmente empregadas como infusão: Técnicas de preparo de amostra e determinação de contaminantes
• Beneficiário: Lucas Caldeirão Rodrigues Miranda
• Modalidade de apoio: Bolsas no Brasil - Doutorado