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UV-Induced fingerprint spectroscopy.

Lukas Nejdl1, Martina Havlikova2, Filip Mravec2

  • 1Department of Chemistry and Biochemistry, Mendel University in Brno, Zemedelska 1, CZ 613 00 Brno, Czech Republic; Central European Institute of Technology, Brno University of Technology, Purkynova 123, CZ-612 00 Brno, Czech Republic.

Food Chemistry
|September 8, 2021
PubMed
Summary
This summary is machine-generated.

This study introduces UV fingerprinting, a novel photochemical method that analyzes fluorescence changes after ultraviolet light treatment to identify sample compositions. This technique offers rapid, chemical-free analytical detection for pharmaceuticals and beverages.

Keywords:
AdulterationFingerprintingFluorescence spectroscopyLight-driven reactionsQuality controlSingle-cell analysisUV irradiation

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Area of Science:

  • Analytical Chemistry
  • Photochemistry
  • Spectroscopy

Background:

  • Traditional analytical methods can be time-consuming and require additional reagents.
  • Fluorescence fingerprinting offers a potential alternative for rapid sample analysis.
  • Understanding UV-induced fluorescence changes is key to developing new analytical techniques.

Purpose of the Study:

  • To explore the analytical applications of photochemistry combined with fluorescence fingerprinting.
  • To demonstrate the feasibility of using ultraviolet light (UV) treatment for sample analysis.
  • To establish a rapid and reagent-free method for identifying diverse sample compositions.

Main Methods:

  • Samples were analyzed by measuring their fluorescence after ultraviolet light (UV) treatment.
  • The study focused on changes in fluorescence behavior, particularly in the presence of metal ions and thiol-containing compounds.
  • UV-induced spectral patterns (fingerprints) in the 230-600 nm region were analyzed.

Main Results:

  • UV treatment induced unique fluorescence changes, creating distinct fingerprints specific to sample composition.
  • Significant alterations in fluorescence intensity were observed in certain samples, such as pharmaceuticals.
  • The method demonstrated potential for recognizing various pharmaceuticals, beverages (juices, wines), and other complex mixtures.

Conclusions:

  • UV fingerprinting is a promising, innovative technique for analytical detection.
  • The method is rapid, requiring only a few minutes for analysis.
  • It offers a reagent-free approach, utilizing only a suitable diluent.