Título: Analytical LettersImportada do Authenticus Pesquisar Publicações da Revista

Vol. 45 Nº 5-6

Páginas: 613-624

ISSN: 0003-2719

Editora: Taylor & Francis

ISI Web of Knowledge - 8 Citações

Scopus - 8 Citações

FOS: Ciências exactas e naturais > Química

ID Authenticus: P-002-GK6

DOI: 10.1080/00032719.2011.649458

Abstract (EN): Hazardous levels of melamine in food and feed products have been of great concern after the outbreak of contamination reported in Chinese commodities in 2008. Despite the existence of several analytical methods for melamine (MEL) detection in food, few provide a full validation data set, especially when MEL and cyanuric acid (CYA) are analyzed simultaneously. The aim of this study was to validate an analytical methodology for MEL and CYA analysis in foodstuffs by GC-MS after trimethylsilylation with N, O-bis(trimethylsilyl)trifluoroacetamide. Linearity was obtained in the range of 0.4 to 800 mg/kg for both compounds, with limits of detection (LODs) of 0.15 and 0.05 mg/kg for MEL and CYA, respectively. Screening in 20 food products [3 soya milk powder, 1 baby milk powder, 3 soya powder, 13 diversified cookies and biscuits (8 from China and 2 from Portugal), and 3 dog food) revealed MEL incidence in 55% of the cases, with a maximum concentration of 3.4 mg/kg. CYA was not detected in all samples.

Idioma: Inglês

Tipo (Avaliação Docente): Científica

Nº de páginas: 12