Keywords
Tartrazina
Índigo carmim
Eletroanálise
How to Cite
Abstract
Tartrazina e índigo carmim são corantes alimentícios amplamente utilizados na indústria alimentícia. Ambos os corantes apresentam ondas voltamétricas de redissolução catódica bem definidas no intervalo de pH 2 a 12, quando pré-acumulados sobre eletrodo de gota pendente de mercúrio. Curvas de calibração para tartrazina e índigo carmim são obtidas no intervalo de 5x10-9mol.L-1 a 1x10-7mol.L-1, em tempos de acúmulo de 30s e potencial de acúmulo de 0V e –0,10V, em tampão acetato pH 4,5 e carbonato pH 10, respectivamente. O método proposto foi aplicado para determinação direta de ambos os corantes em amostras individuais ou misturas em meio aquoso, e também, em amostras comerciais de suco artificial em pó e balas.
References
BARROS, A. A.; CABRAL, J. O.; FOGG, A. G. Use of gelatin in the differential pulse polarographic determination and identification of synthetic colouring matters in drugs and cosmetics. Analyst, v.113, p.853-8, 1988. [ Links ]
BARROS, A. A. Differential pulse polarographic determination of synthetic colouring matters in drugs and cosmetics. Analyst, v.112, p.1359-64, 1987. [ Links ]
BLANCO, C. C.; CAMPÃNA, A. M. G.; BARRERO, F. A. Derivative specrophotometric resolution of mixtures of the food colourants tartrazine, amaranth and curcumin in a micellar medium. Talanta, v.43, p.1019-27, 1996. [ Links ]
COLOUR index international, 3rd ed. Bradford: The Society of Dyes and Colour, 1987. v.5, p. 2273-781. [ Links ]
DOMINGUEZ, F. B.; DIEGO, F. G.; MENDEZ, J. F. Determination of sunset yellow and tartrazine by differential pulse polarography. Talanta, v.37, p. 655-8, 1990. [ Links ]
FERREIRA, V. S.; ZANONI, M. V. B.; FOGG, A. G. Indirect cathodic stripping voltammetric determination of ceftazidime as a mercury salt. Anal. Chim. Acta, v.367, p.255-9, 1998. [ Links ]
FOGG, A. G.; BARROS, A. A.; CABRAL, J. O. Differential pulse adsorptive stripping voltammetry of food and cosmetic synthetic colouring matters and their determination and partial identification in tablet coatings and cosmetics. Analyst, v.111, p.831-5, 1986. [ Links ]
HURST, W. J.; MCKIM, J. M.; MARTIN, R. A. Determination of tartrazine in food-products by HPLC. J. Food Sci., v.46, n.2, p.419-21, 1981. [ Links ]
KIRCHMAYR, K.; MALISSA, H.; SZOLGYENYI, G. P.; WINSAUER, K. Determination of intermediates and side-reaction products in tartrazine by ion-pair liquid-chromatography. J. Assoc. Offic. Anal. Chem., v.71, n.5, p.1003-6, 1988. [ Links ]
LI, Y.; DONG, S. Indigo carmine modified polypyrrole film electrode. J. Electroanal. Chem., v.348, p.181-8, 1993. [ Links ]
LÓPEZ-DE-ALBA, P. L.; MARTINEZ, L. L.; RODRIGUEZ, L. I. M.; WRÓBEL, K.; HERNÁNDEZ, J. A. Extraction of sunset yellow and tartrazine by ion-pair formation with adogen-464 and their simultaneous determination by bivariate calibration and derivative spectrophotometry. Analyst, v.122, p.1575-9, 1997. [ Links ]
MARMION, D. M. Handbook of U.S. colorants for foods, drugs and cosmetics, 2nd ed. New York: Wiley, 1984. 375p. [ Links ]
MINISTRY OF FOOD. Food Standards Committee Report on Colouring Matters. Recomendations relating to the use of colouring matters in foods. London: HMSDO, 1954. [ Links ]
MO, S.; NA, J.; MO, H.; CHEN, L. Voltammetric determinaiton of indigo carmine and amaranth on a silver-based mercury film electrode. Anal. Lett., v.25, n.5, p.899-909, 1992. [ Links ]
NEVADO, J. J. B.; CABANILLAS, C. G.; SALCEDO, A. M. Spectrophotmetric resolution of ternary mixtures of amaranth, carmoisine and ponceau 4R by the derivative ratio spectrum-zero crossing method. Fresenius. J. Anal. Chem., v.350, p.606-9, 1994. [ Links ]
NEVADO, J. J. B.; FLORES, J. R.; LLERENA, M. J. V. Square wave adsorptive voltammetric determination of sunset yellow. Talanta, v.44, p.467-74, 1997. [ Links ]
NI, Y.; BAI, J. Simultaneous determination of amaranth and sunset yellow by ratio derivative voltammetry. Talanta, v.44, p.105-9, 1997. [ Links ]
NI,Y.; BAI, J.; JIN, L. Simultaneous adsorptive voltammetric analysis of mixed colorants by multivariate calibration approach. Anal. Chim. Acta, v.329, p.65-72, 1996. [ Links ]
PEARSON, D. The chemical analysis of foods, 7th ed. Edinburgh: Churchill Livingstone, 1976. p. 50-83. [ Links ]
PUTTEMANS, M. L.; DRYON, L.; MASSART, D. L. High-Pressure Liquid- Extraction with Tri-n-octylamine. J. Assoc. Offic. Anal. Chem., v.66, p.670-2, 1983. [ Links ]
THOMPSON, C. O; TRENERRY, V. C. Determination of synthetic colors in confectionery and cordials by micellar electrokinetic capillary chromatography. J. Chromatogr. A, v.704, n.1, p.195-201, 1995. [ Links ]
TOLEDO, M. C. F.; GUERCHON, M. S.; RAGAZZI, S. Potential weekly intake of artificial food colors by 3-14-year-old children in BrazilL. Food Addit. Contam., v.9, n.4, p.291-6, 1992. [ Links ]
WANG, J. Analytical electrochemistry, VCH, New York: 1994. 198p. [ Links ]
ZOLLINGER, H. Color chemistry. 2nd ed. VCH, New York: 1991. 496 p. [ Links ]
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