The assembly of small molecules into larger structures, often driven by noncovalent interactions such as hydrogen bonding, aromatic stacking interactions, and burial of hydrophobic surface, is of widespread interest. The interaction of small molecules with aggregates also has a large range of applications from fluorescence aggregation assays to gas storage in framework materials. Here, we utilize nuclear magnetic resonance spectroscopy to investigate the interaction of a small-molecule probe on the assembly state of sunset yellow across a wide range of relative concentrations. Information from both macroscopic (diffusion) and microscopic (chemical shifts) measurements allows the interaction to be studied and the binding mode to be interrogated. Using fluorophenol as the small-molecule probe, we show that the aggregation behavior of sunset yellow is broadly unaffected by the relative amount of fluorophenol added.
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http://dx.doi.org/10.1021/acs.jpcb.9b07997 | DOI Listing |
Int J Biol Macromol
January 2025
Department of Chemistry, Faculty of Science, Ege University, Bornova, Izmir 35040, Türkiye. Electronic address:
This study showcases the remarkable efficacy of quaternary ammonium-modified cellulose as a highly sustainable biosorbent for removing Sunset Yellow (SY) dye from water. Detailed analysis was conducted using infrared (FTIR) spectroscopy for structural changes and Scanning Electron Microscopy (SEM) for morphological changes. A minimal yet highly effective dose of 0.
View Article and Find Full Text PDFFood Chem
December 2024
Department of chemistry, University of Science and Technology, Tehran, Iran.
Azo dyes, such as tartrazine and sunset yellow, are widely used as affordable and stable food colorants. Accurate quantification is crucial in foods for regulatory monitoring to ensure compliance with safety standards and minimize health risks. This study developed a low-cost and eco-friendly method using digital images and chemometrics for the simultaneous determination of these dyes in food samples.
View Article and Find Full Text PDFLuminescence
December 2024
Department of Physics, Veer Surendra Sai University of Technology, Sambalpur, Odisha, India.
A fast and highly sensitive electrochemical sensor (ECS) is crucially desirable for observing synthetic dyes in foodstuffs, as excessive consumption of these colorants can pose risks to human health, including toxicity and pathogenicity. This research introduces the creation of an ECS comprising a CuO-ZrO nanocomposite for detecting Sunset Yellow (SY) dye in beverage and food items. The synthesized CuO-ZrO material underwent thorough characterization using various physicochemical and electroanalytical methods.
View Article and Find Full Text PDFFood Res Int
January 2025
State Key Laboratory of Tea Plant Biology and Utilization, Anhui Agricultural University, Hefei 230036, China. Electronic address:
Colorant adulteration is a common problem in tea safety control; thus, a rapid identification method is required. In this study, we optimized the fabrication parameters of various sensors to enhance their performance. R6G was used as a probe molecule, demonstrating that the sensnor remained stable for 120 days.
View Article and Find Full Text PDFVet World
October 2024
Department of Microbiology, College of Veterinary Medicine, University of Baghdad, Baghdad, Iraq.
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