Evaluation of imazalil dissipation/migration in postharvest papaya using low-temperature partition extraction and GC-MS analysis

Jéssika Faêda de Freitas; Maria Eliana Lopes Ribeiro de Queiroz; André Fernando de Oliveira; Leandro de Paulo Ribeiro; Davi Vittorazzi Salvador; Liany Divina Lima Miranda; Robson Ribeiro Alves; Alessandra Aparecida Zinato Rodrigues

doi:10.1016/j.foodchem.2023.135969

Evaluation of imazalil dissipation/migration in postharvest papaya using low-temperature partition extraction and GC-MS analysis

Food Chem. 2023 Aug 30:418:135969. doi: 10.1016/j.foodchem.2023.135969. Epub 2023 Mar 17.

Authors

Jéssika Faêda de Freitas¹, Maria Eliana Lopes Ribeiro de Queiroz², André Fernando de Oliveira¹, Leandro de Paulo Ribeiro¹, Davi Vittorazzi Salvador³, Liany Divina Lima Miranda¹, Robson Ribeiro Alves¹, Alessandra Aparecida Zinato Rodrigues⁴

Affiliations

¹ Department of Chemistry, Universidade Federal de Viçosa, Viçosa, Minas Gerais 36570900, Brazil.
² Department of Chemistry, Universidade Federal de Viçosa, Viçosa, Minas Gerais 36570900, Brazil. Electronic address: meliana@ufv.br.
³ Department of Agricultural Engineering, Universidade Federal de Viçosa, Viçosa, Minas Gerais 36570900, Brazil.
⁴ Department of Chemistry, Universidade Federal de Viçosa, Viçosa, Minas Gerais 36570900, Brazil; Department of Agricultural Engineering, Universidade Federal de Viçosa, Viçosa, Minas Gerais 36570900, Brazil.

PMID: 36963133
DOI: 10.1016/j.foodchem.2023.135969

Abstract

Methods involving solid-liquid extraction with low-temperature partition and analysis by gas chromatography coupled to mass spectrometry (GC-MS) were validated to investigate the dissipation/migration of residues of the postharvest fungicide imazalil in papaya skin, pulp, and seeds. The fruits were stored for 23 days (14 °C). Every two days, fruits from the control group and those treated with imazalil had their skin, outer pulp, inner pulp, and seeds separated and then analyzed by GC-MS. After the 23rd day, about 70% of the imazalil had dissipated. Most of the remaining residue was found in the skin; however, the small amount migrating into the pulp was above the maximum residue levels allowed by the regulatory agencies. Imazalil residue was also detected in seeds at concentrations lower than the LOQ (0.025 mg kg^-1). Mass loss was the only quality parameter that showed a significant difference between the fruits of the control and study groups.

Keywords: Carica papaya L; Fungicide migration; Method validation; Residue analysis; Sample preparation; Storage.

MeSH terms

Carica*
Fruit / chemistry
Gas Chromatography-Mass Spectrometry
Imidazoles / analysis
Pesticide Residues* / analysis
Temperature

Substances

enilconazole
Imidazoles
Pesticide Residues