Autor(es): Carreiró, Filipa ; Barros, Sílvia Cruz ; Brites, Carla ; Mateus, Ana Rita ; Ramos, Fernando ; Torres, Duarte ; Silva, Ana Sanches
Data: 2024
Identificador Persistente: http://hdl.handle.net/10362/182888
Origem: Repositório Institucional da UNL
Assunto(s): Food processing; Pesticide residues; Processing factors; Retention factors; Rice; Washing process; Analytical Chemistry; Food Science
Funding Information: The study was funded by project TRACE-RICE\u2014Tracing rice and valorizing side streams along Mediterranean blockchain, grant No. 1934, of the PRIMA Programme, supported under Horizon 2020, the European Union's Framework Programme for Research and Innovation. This research was also funded by PT national funds (FCT/MCTES, Funda\u00E7\u00E3o para a Ci\u00EAncia e Tecnologia and Minist\u00E9rio da Ci\u00EAncia, Tecnologia e Ensino Superior) through the grant UIDB/00211/2020. F. Carreir\u00F3 is grateful for her fellowship in the frame of the TRACE-RICE project. Publisher Copyright: © 2024
A method was validated to determine 121 pesticide residues (carbamates, organophosphates, organochlorines, and pyrethroids) in rice samples, following the guidance document SANTE/11312/2021v2. QuEChERS method was selected for pesticide extraction, and the extract was analyzed by HPLC-MS/MS. The methodology demonstrated precision and accuracy, with recovery rates ranging from 70 % to 119 %. Additionally, the study aimed to assess the effects of washing on residue levels of 121 pesticides in contaminated long-grain rice samples. Subsequently, the rice underwent washing, and the pesticide residues were determined in the samples to evaluate the retention factor. The results suggest that the washing process can enhance the elimination of pesticide residues in rice, around 40 % of pesticides have reduced between 40 and 60 %, and 10 % of pesticides reduced by more than 60 %. This research contributes with valuable insights for improving food safety measures in the context of pesticide-contaminated cereals.
