Simultaneous determination of Sunset Yellow FCF and Sudan I by solid-phase spectrophotometry

Abstract

A new, sensitive and simple spectrophotometric method for the simultaneous determination of Sunset Yellow FCF and Sudan I in mixtures is proposed. The method is based on the isolation of Sunset Yellow FCF on Sephadex diethylaminoethyl (DEAE)A-25 gel (pH 5.0) and the isolation of the Sudan I on C18 silica gel @€I 5.0) measuring, directly, their absorbanas in the solid phase at 3, = 487 nm in both cases. The concentration ranges applicable were between 15 and 500 ng ml-1 for Sunset Yellow FCF and between 20 and 200 ng ml-1 for Sudan I with detection limits of 3.5 and 4.4 ng ml-1, respectively. The method was applied to the determination of mixtures of both compounds in synthetic colourings used as additives in food, drugs and cosmetic products.

A new method for analysis of sunset yellow in food samples based on cloud point extraction prior to spectrophotometric determination

“…At a certain temperature some micellar solutions can macroscopically phase separate into a micelles-rich phase and micellespoor phase [20]. Micelles formation phenomenon has been widely used to extract organic and complex species from aqueous solutions [21][22][23][24][25][26][27].…”

A capillary electrophoresis microsystem for the rapid in-channel amperometric detection of synthetic dyes in food

“…Thus, many analytical approaches have been proposed for the simultaneous determination of some synthetic food additives, such as thinlayer chromatography [4,5], derivative spectrophotometry [6][7][8][9], adsorptive voltammetry [10] and differential pulse polarography [11], but they are in general only suitable for analysing few-component mixtures. At present, the most promising methods seem to be those based on separation approaches such as capillary electrophoresis (CE) and high-performance liquid chromatography (HPLC).…”

Simultaneous Voltammetric Determination of Synthetic Colorants in Foods Using a Magnetic Core–Shell Fe3O4@SiO2/MWCNTs Nanocomposite Modified Carbon Paste Electrode

“…Spectrophotometry allows simultaneous quantitative analyses of mixtures of colorants having similar absorption spectra (Capitán-Vallvey et al 1998;Bozdogan et al 2000). The use of highperformance liquid chromatography (HPLC) was also reported for quantification of colorants.…”