A simple and inexpensive methodology was used to develop a novel electrochemical sensor for the determination of Sudan II. The interaction of Sudan II with salmon sperm ds-DNA on the surface of salmon sperm ds-DNA-modified pencil graphite electrode (PGE) and in solution phase was studied, using ...

A method was developed for analyzing of sudan I, sudan II, sudan III, and sudan IV by high performance liquid chromatography coupled with an electrochemical detector. The electrochemical oxidation of each compound was investigated with a carbon nanotube-ionic liquid gel modified glassy carbon (M...

The use of Sudan black B as coloring agent in foods is forbidden for its toxicology effect on human organs. This work proposes an efficient and sensitive method for food security inspection targeting Sudan black B. Surface-enhanced Raman spectroscopy (SERS) is applied to the analysis of trace Su...

An immunochromatographic assay (ICA) based on surface-enhanced Raman scattering (SERS) for ultrasensitive determination of Sudan I in food samples was reported. Gold-silver core-shell bimetallic nanorods (referred to as [email protected] NRs) were synthesized, characterized and used as the subst...

We report on an ultrasensitive and selective fluorescence assay for Sudan I and III against the influence of Sudan II and IV based on ligand exchange mechanism. Calcein as a fluorescence indicator and Sudan I–IV as model analytes were employed to investigate the analytical feature of this assay...

Multivariate curve resolution-alternating least squares (MCR-ALS) assisted with electrochemical techniques was applied for simultaneous determination of Sudan II and III at a surface of zinc oxide nanoparticles (ZnONPs) modified carbon paste electrode. Characterization of the ZnONPs and the nano...

In this paper, we report the interaction of Sudan II and Sudan IV to bovine serum albumin (BSA). Structural analysis showed that both Sudan II and Sudan IV interact mainly with BSA at the hydrophobic pocket and via Van der Waals forces. The number of bound Sudan molecule for each protein molecul...

Two strategies based on multivariate qualitative and quantitative analysis are proposed for determining whether paprika samples are adulterated with Sudan I or II dyes. The samples were characterized by their UV–visible spectrum. Then, the following chemometric techniques were applied: principa...

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 (R...

Zinc oxide nanoparticles (ZnONPs) were synthesized by precipitation method and used as a novel electrocatalyst for detection of Sudan II dye. The nanoparticles were characterized by X-Ray diffraction spectroscopy and scanning electron microscope techniques. To investigate the electrocatalytic ef...

5,6,7,8-Tetrahydro derivatives of quinazoline-2-amine have been synthesized and characterized. These reactions, which are carried out using one-pot multicomponent reactions (MCR's), proceed more easily than conventional multistep organic reactions. This method allows new organic molecules t...

The glaucoma is an ocular pathology characterized by the increase of intraocular pressure and possibility of retinal degeneration. The treatment is based on the administration of eye drops. However, they do not induce the permanence of drug in the eye, compromising its bioavailability. In this s...

Proton transfer complex of Picolinium Tartrate Monohydrate (PTM) was synthesized and structure was confirmed by single crystal X-ray diffraction technique and 1H & 13C NMR analysis. The molecular structural investigations by Hirshfeld surface, NBO and AIM analyses reveals that the picolinium cat...

A new third order nonlinear optical single crystal of Morpholin-4-ium hydrogen tartrate has been grown by the slow evaporation method. The lattice parameters and crystalline purity of this orthorhombic crystal were measured by single crystal X-ray diffraction and powder X-diffraction technique r...

The objective of study was to model and optimize the adsorption procedures for the removal of lead(II), i.e. zinc(II) ions from the aqueous solutions using bentonite clay as an efficient and low cost adsorbent. A central composite design (CCD) was employed to optimize the conditions of independe...

A novel hierarchical composite adsorbent was developed for sensitive and selective lead (Pb(II)) ions detection and removal from wastewater as well as biological samples optically. In the fabrication of composite adsorbent, highly mesoporous silica with nanospheres was used as substrate and the ...

To identify the interactions among individual molecules of the wine colloidal matrix and the potassium hydrogen tartrate crystal growth surface, the effects of proteins alone and of 1:10, 1:30, 1:50, and 1:80 protein:tannin concentration ratios on the tartrate-holding capacity of wine model solu...

The sorption by chitosan in Cu(II) solutions containing tartrate, glycine (amino acetic acid) and quadrol (N,N,N′,N′-tetrakis(2-hydroxypropyl)ethylenediamine) as ligands has been investigated. The degree of sorbate removal strongly depends on pH. In solutions containing tartrate almost complet...

Density, viscosity, refractive index and speed of sound have been measured for the pure ester diethyl tartrate at atmospheric pressure and over the temperature range from 288.15 K to 323.15 K. Detailed investigation regarding volumetric and viscometric properties was conducted under the same con...

The tetragonal polar barium antimony tartrate trihydrate, Ba[Sb2((+)C4H2O6)2]·3H2O, was grown to large single crystals of optical quality and several cm dimensions. A vibrational spectroscopy study, thermal expansion measurements and a determination of the pyroelectric properties were performed...