Although it is @ve11 recognized that rats fed azo dyes develop tumors at rates that depend upon the diet fed with the dye (@28), the mechanism by which this is accomplished is unknown. One possi bility is that pertinent diets alter the metabolism of the dye and thus alter the concentration of ef fective carcinogen; another, that diet can effect changes in normal cellular constituents that eithe...

The writers have been studying an antigen-antibody system in which the antigen was the red dye, R-salt-azo-benzidine-azo-crystallie egg albumin’ (1, 2), fractionated to the extent that it reacted only exceptionally with anti-egg albumin sera. However, as stated previously (Z), the original specificity was not entirely abolished, since antisera to the dye protein yielded precipitates with crysta...

The electronic and structural properties of single wall carbon nanotubes (SWCNTs) interacted with 4-amino phenyl-azobenzene were theoretically investigated by using the hybrid DFT (hybrid-density functional theory) calculations. The amount of thermodynamic parameters of this reaction in the gas and aqueous phase suggesting thermodynamic favourability for adsorption of 4-amino phenyl-azobenzene ...

A green, simple and sensitive spectrophotometric method was proposed for the determination of isoxsuprine hydrochloride (ISX), based on preconcentration with cetyltrimethylammonium bromide (CTAB) modified magnetic iron oxide nanoparticales (MNPs). ISX coupled diazotized metoclopramide drug via diazotization-coupling reaction in alkaline medium to form yellow-orange color product which extracted...

Numerous heterocyclic azo dyes have been reported for the spectrophotometric determination of Cu(II). Here, we report a new heterocyclic azo dye 1-(2'Chloro-4'-sulphophenyl-3-methyl-4-azo-(2"carboxy-5"-sulphonic acid)-5-pyrazolone [CSMACSP] for the spectrophotometric determination of Cu(II). The method is simple, rapid and sensitive. Light green colour 1:1 (M:L) complex formed between Cu(II) an...

Abstract The treatment of azo dye effluent from the dyeing process, as well sustainable development environment, can all be achieved through use green mycoremediation. In this in vitro study, Trichothecium roseum was isolated by sedimentation technique environment an unplasticized polyvinyl chloride pipe manufacturing plant and used to decolourize optimise biosorption percentage Azo Lanasyn Nav...

A simple, sensitive and direct colorimetric method for the determination of indomethacin either in pure form or in capsules has been developed. The method is based on the diazo coupling reaction between indomethacin and a highly reactive arenediazonium ion, 4-carboxyl-2,6-dinitrobenzene diazonium ion, with the consequent formation of an azo dye. The reaction is fast and gave an orange azo dye i...

Decolourization of azo dyes by Pleurotus ostreatus, a white-rot fungus capable of lignin depolymerization and mineralization, is related to the ligninolytic activity of enzymes produced by this fungus. The capacity of P. ostreatus to decolourize the azo dye Orange II (OII) was dependent and positively co-linear to Mn(2+) concentration in the medium, and thus attributed to Mn(2+)-dependent perox...

Removal of azo dye effluents generated by textile photography industries is a main issue in wastewater treatment. Enzymatic treatment of dyes appears to be one of the most efficient processes for their degradation. The elucidation of degradation pathways is of special interest considering health and environmental priorities. Ex situ nuclear magnetic resonance (NMR) spectroscopy and electrospray...