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Type: Artigo de periódico
Title: Assessment Of The Breakdown Products Of Solar/uv Induced Photolytic Degradation Of Food Dye Tartrazine
Author: Dos Santos T.C.
Zocolo G.J.
Morales D.A.
Umbuzeiro G.D.A.
Zanoni M.V.B.
Abstract: The food dye tartrazine (CI 19140) was exposed to UV irradiation from an artificial source, a mercury vapor lamp, and a natural one, sunlight. It was observed that conditions such as energy dose, irradiation time, pH and initial dye concentration affected its discoloration. There was 100% of color removal, after 30min of irradiation, when a dye solution 1×10-5molL-1 was submitted to an energy dose of 37.8Jcm-2. Liquid Chromatography coupled to Diode Array Detection and Mass Spectrometry confirmed the cleavage of the chromophore group and the formation of five by-products at low concentration. Although by-products were formed, the Salmonella/microsome mutagenicity assay performed for both, the dye solution at a dose of 5.34mg/plate and the solutions obtained after exposure to UV irradiation, did not present mutagenic activity for TA98 and TA100 with and without S9. © 2014 Elsevier Ltd.
Editor: Elsevier Ltd
Rights: fechado
Identifier DOI: 10.1016/j.fct.2014.03.025
Date Issue: 2014
Appears in Collections:Unicamp - Artigos e Outros Documentos

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