Development and validation of a ready to use cryo-EROD assay for the standardized screening of dioxins and dioxin-like compounds in foodstuffs.
Food Chem Toxicol
; 122: 206-214, 2018 Dec.
Article
em En
| MEDLINE
| ID: mdl-30300728
ABSTRACT
Recent European regulations have indicated the need for new bioanalytical screening methods capable of monitoring dioxin and dioxin-like compounds in foodstuffs and environmental samples, cost-effectively and with a quicker turnaround. Cryo-cells of the hepatic H4IIE line preserved in 96-well plates were exposed to sample extracts prepared from various foodstuffs and analysed for their content of dioxins and dioxin-like compounds by means of the 7-Ethoxyresorufin-O-Deethylase (EROD)-assay in two laboratories. Assay data were compared between both laboratories and results from instrumental analysis used as a confirmatory method. Additionally, cut-off values for the different studied matrices were derived. The current European regulation regarding methods of analysis for the control of foodstuffs was applied with the aim of determining the feasibility of the cryo-methodology. Results obtained in both laboratories were in congruence with the required validation parameters of the Commission Regulation (EU) No 2017/644. Cut-off values should be established matrix-dependent to reduce the rate of false compliant results and to keep the rate of false non-compliant results under control. In summary, the ready-to-use cryo-assay method for the bioanalytical screening of foodstuffs in control laboratories without cell-culture facilities has successfully proven to be accurate, far quicker and more cost effective than current methods.
Palavras-chave
Texto completo:
1
Base de dados:
MEDLINE
Assunto principal:
Contaminação de Alimentos
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Técnicas de Química Analítica
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Citocromo P-450 CYP1A1
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Dioxinas
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Congelamento
Tipo de estudo:
Diagnostic_studies
/
Screening_studies
Limite:
Animals
País/Região como assunto:
Europa
Idioma:
En
Revista:
Food Chem Toxicol
Ano de publicação:
2018
Tipo de documento:
Article