Results 151 to 160 of about 185,175 (195)

Synthesis of Deuterium-Labeled Azo Dyes of the Sudan Family

Synthesis, 2008
Carcinogenic amines are formed in vivo during the metabolism of Sudan azo dyes. The identification and assay of these polluting agents requires the availability of deuterated analogues. Accordingly, two series of derivatives labeled on the phenylazo and naphthol moieties were synthesized.
DE NINO, Antonio, DI DONNA, Leonardo, MAIUOLO, Loredana, MAZZOTTI F, SINDONA, Giovanni   +4 more
openaire   +3 more sources

Study on the Interaction of Gingerol and Sudan Dye

Advanced Materials Research, 2011
The antioxidation activity and the linear relationship between the absorbance and the concentration of gingerol were detected in different condition. Gingerol’s median effect concentration(EC50) was 7.6165ug·mL-1and its TAC was higher than that of ginger oleoresin prepared from ginger extract. The surface property of gingerol-Sudan (I) was investigated
Cheng Lun Liu, Tai Ping Xie, Chun Lan He, Long Jun Xu, Zheng Shi Liu   +4 more
openaire   +1 more source

Comparison of the binding of the dyes Sudan II and Sudan IV to bovine hemoglobin

Journal of Luminescence, 2014
Sudan dyes are widely used in industry, and sometimes illegally used as food additives despite their potential toxicity. In this work, the interactions of Sudan II and Sudan IV with bovine hemoglobin (BHb) were investigated by fluorescence, synchronous fluorescence, resonance light scattering (RLS), UV-vis absorption, circular dichroism (CD), and ...
Sun, Haoyu, Xia, Qing, Liu, Rutao
openaire   +4 more sources

Some observations on the metabolism and excretion of the bisazo dyes sudan III and sudan IV

Food and Cosmetics Toxicology, 1967
Abstract The metabolism and excretion of the fat-soluble bisazo dyes Sudan III and Sudan IV have been studied in the rat. Limited absorption of Sudan III from the gastro-intestinal tract after oral dosage, slow back diffusion of both dyes across the intestinal wall after intraperitoneal injection and absence of either dye in urine or bile after ...
A.J. Ryan, P.G. Welling
openaire   +1 more source

Photocatalytic degradation of Azure and Sudan dyes using nano TiO2

Journal of Hazardous Materials, 2007
The present study investigates the dependence of photocatalytic rate on molecular structure of the substrate that is degraded. The photocatalytic degradation of Azure (A and B) and Sudan (III and IV) dyes, having similar structure, but different functional groups, were investigated with two catalysts.
Aarthi, T, Narahari, Prashanthi, Madras, Giridhar   +2 more
openaire   +2 more sources

Induction of propranolol metabolism by the azo dye sudan III in rats

Biochemical Pharmacology, 1992
Effects of the azo dye sudan III, an inducer of cytochrome P450 isozymes belonging to the CYP1A subfamily, on propranolol (PL) in vitro and in vivo metabolism were investigated in rats. The kinetic parameters of the activity for each metabolic pathway were determined in liver microsomes from control and sudan III-treated rats.
R, Ishida, S, Obara, Y, Masubuchi, S, Narimatsu, S, Fujita, T, Suzuki   +5 more
openaire   +2 more sources

Sudan dyes: are they dangerous for human health?

Drug and Chemical Toxicology, 2012
Azo and diazo compounds include Sudan dyes, which were widely used in industry. Although they are not permitted in food, they had been found contaminating different food products and their presence is investigated regularly (since 2003) in these products.
openaire   +2 more sources

On the Azo/Hydrazo Equilibrium in Sudan I Azo Dye Derivatives

The Journal of Physical Chemistry A, 2013
In this study, Raman, infrared, UV/vis, NMR, and single crystal X-ray diffraction spectroscopies are used to elucidate the tautomeric equilibrium of azo dyes derived from 1-phenyl-azo-2-naphthol (Sudan I). A new crystallographic structure is described for Sudan I, revealing the presence of intramolecular hydrogen bonds and supramolecular interactions ...
Gilson R, Ferreira, Humberto Costa, Garcia, Mara Rubia C, Couri, Hélio F, Dos Santos, Luiz Fernando C, de Oliveira   +4 more
openaire   +2 more sources

THE THEORETICAL DESCRIPTION OF SUDAN DYES ELECTROCHEMICAL DETERMINATION ON A TRIAZOLIC DERIVATIVE

2023
The theoretical description of the electrochemical determination of sudan dyes, assisted by novel triazolic derivatives, using a disulfonic organic acid as a binder, has been made. The correspondent mathematical model was analyzed by means of linear stability theory and bifurcation analysis.
Tkach, Volodymyr Valentynovych, Sílvio C. De Oliveira2, Olga V. Luganska3,, Marta V. Kushnir1, Lyudmyla V. Romaniv1,, Jarem R. Garcia5, Petró I. Yagodynets´1, Vira M. Odyntsova4, Mykola P. Krasko4,   +2 more
openaire   +1 more source

Synthesis of magnetic nanoparticles to detect Sudan dye adulteration in chilli powders

Food Chemistry, 2019
Magnetic nanoparticles were synthesised to extract Sudan dyes from chilli powders. The adsorbents used were magnetic ferroferric oxide nanoparticles coated with polystyrene. The extraction procedures for Sudan dyes comprised liquid-solid extraction and magnetic solid phase extraction.
Xi Yu, Jun Kang Lee, Huilin Liu, Hongshun Yang   +3 more
openaire   +2 more sources