Oxidation and Complexation-Based Spectrophotometric Methods for Sensitive Determination of Tartrazine E102 in Some Commercial Food Samples

Saleh, Magda M. S.; Hashem, Elham Y.; Salahi, Najat O. A. Al

doi:10.4236/cc.2016.42005

Cited by 25 publications

(15 citation statements)

References 31 publications

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“…Among food additives approved for human use, azo compounds are negatively charged at physiological pH and are widely used as food colorants in a large variety of foodstuff and pharmaceuticals (Saleh et al ., 2016). They are characterized by aromatic rings in conjunction with N = N linkages and several are known to interact with biomacromolecules (Basu and Kumar, 2015; Basu and Suresh Kumar, 2017; Al-Shabib et al ., 2018).…”

Section: Resultsmentioning

confidence: 99%

“…To select an additional test compound for comparison, we checked the general physicochemical properties of all dyes, such as charge, the structural distribution of hydrophobic and polar regions, and the nature of the functional groups present. According to these, AmTH showed the closest resemblance to TZ in terms of the above chemical parameters, both having three negative charges in physiological conditions (Saleh et al ., 2016), and thus AmTH was also selected for further studies. Notably, the highest toxicity was detected when DHVAR4 was mixed with TZ.…”

Section: Resultsmentioning

confidence: 99%

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Anionic food color tartrazine enhances antibacterial efficacy of histatin-derived peptide DHVAR4 by fine-tuning its membrane activity

Ricci

Horváti

Juhász

et al. 2020

Quart. Rev. Biophys.

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Here it is demonstrated how some anionic food additives commonly used in our diet, such as tartrazine (TZ), bind to DHVAR4, an antimicrobial peptide (AMP) derived from oral host defense peptides, resulting in significantly fostered toxic activity against both Gram-positive and Gram-negative bacteria, but not against mammalian cells. Biophysical studies on the DHVAR4–TZ interaction indicate that initially large, positively charged aggregates are formed, but in the presence of lipid bilayers, they rather associate with the membrane surface. In contrast to synergistic effects observed for mixed antibacterial compounds, this is a principally different mechanism, where TZ directly acts on the membrane-associated AMP promoting its biologically active helical conformation. Model vesicle studies show that compared to dye-free DHVAR4, peptide–TZ complexes are more prone to form H-bonds with the phosphate ester moiety of the bilayer head-group region resulting in more controlled bilayer fusion mechanism and concerted severe cell damage. AMPs are considered as promising compounds to combat formidable antibiotic-resistant bacterial infections; however, we know very little on their in vivo actions, especially on how they interact with other chemical agents. The current example illustrates how food dyes can modulate AMP activity, which is hoped to inspire improved therapies against microbial infections in the alimentary tract. Results also imply that the structure and function of natural AMPs could be manipulated by small compounds, which may also offer a new strategic concept for the future design of peptide-based antimicrobials.

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Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Anionic food color tartrazine enhances antibacterial efficacy of histatin-derived peptide DHVAR4 by fine-tuning its membrane activity

Ricci

Horváti

Juhász

et al. 2020

Quart. Rev. Biophys.

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“…(trisodium 1-(4-sulfonatophenyl)-4-(4sulfonatophenylazo)-5-pyrazolone-3-carboxylate)) is a yellow-colored synthetic azo dye that is used for food or drinks coloring. Tartrazine has two sulfonic acid and one carboxylic acid group on its structure, so it can change molecular form with pH change (Saleh et al 2016). Diphenylcarbazone (1-anilino-3-phenyliminourea) is a molecule from the carbazone family.…”

Section: Tartrazinementioning

confidence: 99%

Diphenylcarbazone and tartrazine as sensitizer metal complex dyes for dye sensitized solar cells

Ünlü

Türk

Özacar

2022

Eurasian Journal of Biological and Chemical Sciences

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Dye sensitized solar cells (DSSCs) are photovoltaic devices that produce electricity from the photon energy of sunlight using dyes. Dyes used DSSCs should have a broad absorption spectrum at the UV-Vis region and should be strongly bound to the photoanode surface. Dyes are used in DSSCs can be classified into three types: metal complex dyes, metal-free organic dyes and natural dyes. For metal complex dyes, ruthenium is usually used as metal centers. While most Ru complex dyes have high efficiency, Ru is a rare metal. To decrease the cost of Ru complex dyes, transition metals are widely investigated. In this work, diphenylcarbazone and tartrazine with different metal complexes were synthesized and investigated for their suitability for DSSCs. UV-Vis was used for the characterization of dyes and linear sweep voltammetry and electrochemical impedance spectroscopy were used to investigate the performance of DSSCs.

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“…Therefore, it is highly desirable to develop effective methods to detect tartrazine. Among the developed methods, UV-Vis spectroscopy [8][9][10][11] has poor sensitivity and rather high determination limit. High-performance liquid chromatography (HPLC) [12][13][14] shows good sensitivity but is time-consuming.…”

Section: Introductionmentioning

confidence: 99%

Ascorbic acid functionalized anti-aggregated Au nanoparticles for ultrafast MEF and SERS detection of tartrazine: an ultra-wide piecewise linear range study

Han

et al. 2022

Analyst

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Oxidation and Complexation-Based Spectrophotometric Methods for Sensitive Determination of Tartrazine E102 in Some Commercial Food Samples

Abstract: Abstract

Cited by 25 publications

References 31 publications

Anionic food color tartrazine enhances antibacterial efficacy of histatin-derived peptide DHVAR4 by fine-tuning its membrane activity

Anionic food color tartrazine enhances antibacterial efficacy of histatin-derived peptide DHVAR4 by fine-tuning its membrane activity

Diphenylcarbazone and tartrazine as sensitizer metal complex dyes for dye sensitized solar cells

Ascorbic acid functionalized anti-aggregated Au nanoparticles for ultrafast MEF and SERS detection of tartrazine: an ultra-wide piecewise linear range study

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