Determination of Sudan I in drinks containing Sunset yellow by adsorptive stripping voltammetry.
Food Chem
; 212: 807-13, 2016 Dec 01.
Article
em En
| MEDLINE
| ID: mdl-27374598
ABSTRACT
An efficient, fast and sensitive method for the determination of Sudan I (SI) in drinks containing Sunset yellow (Sy) is developed and validated using an adsorptive stripping voltammetric procedure. Sy is currently added to a large number of foods; however during their synthesis SI may be produced. The determination is based on adsorption of Sy and SI onto HMDE and later reduction of the azo group at -0.71 and -0.82V, respectively. Using the best set of the experimental conditions (pH 12.3; Eads -0.40V) for the determination of SI in Sy, a linear response for SI in the concentration range 0.5-27.2µgL(-1) was found, with a detection limit of 1.5µgL(-1) in a tads of only 30s. The method was applied to the determination of SI in commercial drinks with satisfactory results. The presence of SI was confirmed by mass spectrometry.
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Texto completo:
1
Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Compostos Azo
/
Bebidas
/
Corantes
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Eletroquímica
/
Naftóis
Idioma:
En
Revista:
Food Chem
Ano de publicação:
2016
Tipo de documento:
Article