A first-derivative spectrophotometric method was developed for quantitative determination of two synthetic organic dyes, Carmoisine and Patent Blue V, which are under governmental regulations all over the world because of their toxicity and carcinogenity. In this study, Carmoisine and Patent Blue V were simultaneously determined in their binary mixtures by first-derivative spectrophotometry. Th...

1 Faculty of Science, Ain Shams University, Cairo, Egypt 2 Department of Biology, Faculty of Education, Ain Shams University, Cairo, Egypt *Corresponding Author E-mail: [email protected] In the past few years there has been a sharp rise in the use of food and beverages colourants to improve their characteristics. More worryingly is the commonly used colourant in most pharmaceutical syrups a...

a novel, simple and more sensitive spectrophotometric procedure has been developed for the determination of brilliant blue fcf and carmoisine in food samples by an aqueous two-phase system (atps). after extraction, the absorbance values were measured at 527 and 632 nm for carmoisine and brilliant blue fcf, respectively. the effects of different parameters such as, polyethylene glycol (type and ...

A whole-column detection (WCD) system was fabricated using the parts from a typical A4 size optical scanner. Optimum layout of the fluorescence tube, beam condenser and photon transducers from the scanner made an effective devise to examine the dynamic chromatographic separation process. This system was applied in monitoring peak crossover in an ion-pair chromatographic elution. A stage-wise gr...

Saeed S. M.G., Abdullah S.U., Sayeed S.A., Ali R. (2010): Food protein: Food colour interactions and its application in rapid protein assay. Czech J. Food Sci., 28: 506–513. The uniform distribution of colours as additives in a majority of the food systems is a reliable indication that one or more components of foods are able to bind with colour molecules and act as their carriers. However, the...

Purpose. Investigate the formation and functioning of symbiotic systems soybeans with nodule bacteria by ino­culation seeds biological products based on fungicide-resistant strains Bradyrhizobium japonicum PC07 B78 different rates synthetic carmoisine colorant. Methods. Physiological, microbiological, gas chromatography, statistical. Results. It was found that as a result inoculation soybean [G...

Four simple, rapid, and accurate spectrophotometric methods were developed for the simultaneous determination of two food colorants, Carmoisine (E122) and Ponceau 4R (E124), in their binary mixtures and soft drinks. The first method is based on recording the first derivative curves and determining each component using the zero-crossing technique. The second method uses the first derivative of r...

A novel, simple and more sensitive spectrophotometric procedure has been developed for the determination of Brilliant blue FCF and Carmoisine in food samples by an aqueous two-phase system (ATPS). After extraction, the absorbance values were measured at 527 and 632 nm for Carmoisine and Brilliant blue FCF, respectively. The effects of different parameters such as, polyethylene glycol (type and ...

Natural and chemical colorants are attracting a lot of attention as sustainable feed additives due to their effect on food color because presentation matters consumers. Color also is major sensory factor that helps consumers determine quality its possible health benefits. For example, highly colored egg yolks can only come from healthy laying hens fed well-balanced, nutrient-rich diet. Consumer...

This work aims to evaluate the adsorption capacity of an abundant natural diatomite (ND) remove azo dye carmoisine, known as a harmful emerging organic pollutant. Indeed, best our knowledge, no results were reported on this subject. The ND was characterized by FTIR, XRD, and SEM/EDX analyses. experimental study carried out in batch mode. Results showed that adsorbent is mainly composed silica. ...