Results 131 to 140 of about 2,255 (179)

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

Production of the Polyclonal Antibody against Sudan 3 and Immunoassay of Sudan Dyes in Food Samples

Journal of Agricultural and Food Chemistry, 2012
In this study, 4-aminophenylacetic acid was covalently coupled to aniline to synthesize an intermediate hapten and the intermediate hapten was coupled to β-naphthol to synthesize a tentative hapten of Sudan 3. The hapten was coupled to bovine serum albumin as the immunogen to produce the polyclonal antibody. The obtained antibody was highly specific to
Yong Hua, Qi, Wen Chong, Shan, Yan Zheng, Liu, Yu Jie, Zhang, Jian Ping, Wang   +4 more
openaire   +2 more sources

Optical limiting behavior of Sudan III dye doped polymer

Optics & Laser Technology, 2010
Abstract The optical limiting performance of Sudan III dye doped into ethylene propylene diene polymethylene polymer (EPDM) is investigated using 532 nm, 10 ns pulses from a frequency-doubled Nd–YAG laser. The optical limiting behavior is investigated by transmission measurement through the sample at different concentrations.
M.D. Zidan, A.W. Allaf, Z. Ajji, A. Allahham   +3 more
openaire   +1 more source

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   +2 more sources

Sudan III dye strongly induces CYP1A1 mRNA expression in HepG2 cells

Journal of Biochemical and Molecular Toxicology, 2012
AbstractSudan dyes possess a high affinity to the aryl hydrocarbon receptor (AHR) and potently induce its target genes, such as cytochrome P450 (CYP) 1A1, through unknown mechanisms. We investigated a detailed event occurring in cells after binding of Sudan dye to AHR in HepG2 cells. Treatment with 10 µM Sudan III caused rapid translocation of AHR into
Marumi, Ohno, Yoshinori, Ikenaka, Mayumi, Ishizuka   +2 more
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

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

Removal of water-insoluble Sudan dyes by Shewanella oneidensis MR-1

Bioresource Technology, 2012
Decolorization of water-insoluble Sudan dyes was studied with Shewanella oneidensis MR-1, which removed 66.8%, 43.4%, 56.0% and 33.7% Sudan I-IV in 104 h, respectively and reduced Sudan I to aniline and 1-amino-2-naphthol. Lactate was identified as the most efficient electron donor for Sudan I reduction.
Qiuyan, Ji, Guangfei, Liu, Jiti, Zhou, Jing, Wang, Ruofei, Jin, Hong, Lv   +5 more
openaire   +2 more sources

Production of the monoclonal antibody against Sudan 4 for multi-immunoassay of Sudan dyes in egg

Food Control, 2012
Abstract Sudan dyes (Sudan 1, 2, 3, 4, Para red and Sudan red G) have been banned as food colorants due to their carcinogenicity. This study first synthesized a hapten of Sudan 4 and produced the monoclonal antibody for immunoassay of these red dyes.
Wen Chong Shan, Jian Zhong Xi, Jie Sun, Yu Jie Zhang, Jian Ping Wang   +4 more
openaire   +1 more source