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SM ISO690:2012 LEULESCU, Marian, PĂLĂRIE, Ion, HARABOR, Ana, MOANŢĂ, Anca, CIOATERĂ, Nicoleta, POPESCU, Mariana, MORINTALE, Emilian, ROTARU, Petre. Thermal behaviour and physical properties of food azo dyes, biologically active. I. Tartrazine. In: Central and Eastern European Conference on Thermal Analysis and Calorimetry, Ed. 4, 28-31 august 2017, Chişinău. Germany: Academica Greifswald, 2017, Editia 4, p. 477. ISBN 978-3-940237-47-7. |
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Central and Eastern European Conference on Thermal Analysis and Calorimetry Editia 4, 2017 |
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Conferința "Central and Eastern European Conference" 4, Chişinău, Moldova, 28-31 august 2017 | ||||||
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Pag. 477-477 | ||||||
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The food azo dyes are significant biologically active materials. Thermal behavior of trisodium(4E)-5-oxo-1-(4sulfonatophenyl)-4-[(4-sulfonatophenyl)hydrazono]-3-pyrazole carboxylate, tartrazine or E102 named (Figure 1), food dye was studied in correlation with the physical, chemical and biologically antioxidant properties [1]. Azoic dye structure has been determined by X-ray diffraction and SEM analysis. Atomic transitions and atomic bonds behavior in molecules, fluorescent excitation of the compound has been identified by spectroscopic FTIR, UV-Vis, atomic fluorescence and Raman techniques. Optical properties were determined through refractive index for different concentrations measurements. Relative electrical permeability, electronic polarization and others were calculated. Biological of azo dye activity has been evidenced through their interaction with animal proteins and azo dye toxicity, to plants, it was manifested through the treatment of wheat with different concentrations azo dye solutions. Were measured surface tension and pH of the azo dye solutions depending on the temperature [2]. Figure 1 Figure 2 Thermal analysis measurements were performed in air dynamic atmosphere (150 cm3/min) at 10 K/min to 1000 °C, using alumina crucibles with PerkinElmer Diamond TG/DTA device [3]. These measurements of tartrazine revealed a thermal stability till 350 °C (Figure 2). The visible absorption band with a peak at the wavelength 436.36 nm, for tartrazine solution c = 0.001 %, has absorbance value of 1.011. The study was conducted in order to determine the bioactivity behavior of tartrazine. |
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<meta name="citation_title" content="Thermal behaviour and physical properties of food azo dyes, biologically active. I. Tartrazine"> <meta name="citation_author" content="Leulescu Marian"> <meta name="citation_author" content="Pălărie Ion"> <meta name="citation_author" content="Harabor Ana"> <meta name="citation_author" content="Moanţă Anca"> <meta name="citation_author" content="Cioateră Nicoleta"> <meta name="citation_author" content="Popescu Mariana"> <meta name="citation_author" content="Morintale Emilian"> <meta name="citation_author" content="Rotaru Petre"> <meta name="citation_publication_date" content="2017"> <meta name="citation_collection_title" content="Central and Eastern European Conference on Thermal Analysis and Calorimetry"> <meta name="citation_volume" content="Editia 4"> <meta name="citation_firstpage" content="477"> <meta name="citation_lastpage" content="477"> <meta name="citation_pdf_url" content="https://ibn.idsi.md/sites/default/files/imag_file/p477.pdf">