Simultaneous determination of some common food dyes in commercial products by digital image analysis

A simple and relatively fast image-analysis method using digital images, obtained with a flatbed scanner, has been described. The method was used for the simultaneous determination of four common food dyes, namely, carmoisine, brilliant blue, sunset yellow, and quinoline yellow, in binary mixtures i...

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Bibliographic Details
Published in:Yàowu shi͡p︡in fenxi 2015-09, Vol.23 (3), p.447-452
Main Authors: Sorouraddin, Mohammad-Hossein, Saadati, Masoud, Mirabi, Fariba
Format: Article
Language:English
Subjects:
Azo dyes
Binary mixtures
Chocolate
Chromatography
Correlation coefficients
Digital imaging
Dyes
Flatbed
flatbed scanner
Food
food additive
food color
Food dyes
Food production
Food products
High performance liquid chromatography
Image analysis
Image processing
Liquid chromatography
Methods
Original
Quality control
Quinoline
Retention
Scanners
simultaneous determination
Software
Sunset
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Summary:A simple and relatively fast image-analysis method using digital images, obtained with a flatbed scanner, has been described. The method was used for the simultaneous determination of four common food dyes, namely, carmoisine, brilliant blue, sunset yellow, and quinoline yellow, in binary mixtures in commercial products without a need for any prior separation steps. The results obtained were validated against a standard high-performance liquid chromatography method and a good agreement was obtained. The parameters affecting the experimental results were optimized. Under the optimal conditions, the method provided acceptable linear ranges (20–250 mg/L) with correlation coefficients higher than 0.998, suitable precision (relative standard deviation ≤ 4.5%), and limits of detection between 4.82 and 8.05 mg/L.
ISSN:1021-9498
2224-6614
DOI:10.1016/j.jfda.2014.10.007