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Resolution of ternary mixtures of Tartrazine, Sunset yellow and Ponceau 4R by derivative spectrophotometric ratio spectrum-zero crossing method in commercial foods

✍ Scribed by J.J Berzas Nevado; J Rodrı́guez Flores; C Guiberteau Cabanillas; M.J Villaseñor Llerena; A Contento Salcedo


Book ID
117224415
Publisher
Elsevier Science
Year
1998
Tongue
English
Weight
149 KB
Volume
46
Category
Article
ISSN
0039-9140

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Determination of Tartrazine and Ponceau-
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Two spectrophotometric methods have been described for determining Tartrazine and Ponceau-4R in binary mixtures. These methods permit the simultaneous determination of these food colorants in various commercially available food samples which contain saccharose and citric acid. Ratio spectra first-or