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Microchimica Acta

, Volume 184, Issue 11, pp 4401–4408 | Cite as

Aptamer-based zearalenone assay based on the use of a fluorescein label and a functional graphene oxide as a quencher

  • K. Yugender Goud
  • Akhtar Hayat
  • M. Satyanarayana
  • V. Sunil Kumar
  • Gaëlle Catanante
  • K. Vengatajalabathy Gobi
  • Jean Louis Marty
Original Paper

Abstract

A versatile and cost-effective aptamer-based fluorescence quenching assay is described for the detection of the mycotoxin zearalenone (ZEN). Exfoliated functional graphene oxide (FGO) of high water-dispersibility is adopted as an effective fluorescence quencher of the fluorescence of FAM. Quenching properties of graphite, graphene oxide (GO) and FGO were investigated, and FGO is found to be the most efficient quencher. FGO therefore was used in an aptamer-based detection format that allows ZEN to be determined in the concentration range of 0.5 to 64 ng·mL−1 with a limit of detection of 0.5 ng·mL−1. The aptamer assay has good repeatability and reproducibility (n ≥ 4). Selectivity of the aptamer assay against a set of possible interferents is substantiated. This aptasensing assay was successfully applied to the determination of ZEN in (spiked) alcoholic beverage samples, beer and wine, and recovery values in the range of 87 to 96% were obtained for the determination of ZEN at levels as low as 1–16 ng mL−1.

Graphical abstract

Comparison of fluorescence quenching efficiency of graphite, graphene oxide (GO) and functional graphene oxide (FGO). Fluorophore: Fluorescein amidite (FAM).

Keywords

Zearalenone Optical aptasensor Fluorescein amidite (FAM) Functional graphene oxide Aptamer Fluorescence quenching Beer Wine Alcoholic beverages 

Notes

Acknowledgments

This research work was supported by NATO SPS program, project NUKR.SFPP 984637. K. Yugender Goud would like to thank EUPHRATES Program for ERASMUS Mundus Doctoral Fellowship.

Compliance with ethical standards

The author(s) declare that they have no competing interests.

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Copyright information

© Springer-Verlag GmbH Austria 2017

Authors and Affiliations

  • K. Yugender Goud
    • 1
    • 2
  • Akhtar Hayat
    • 1
    • 3
  • M. Satyanarayana
    • 2
  • V. Sunil Kumar
    • 2
  • Gaëlle Catanante
    • 1
  • K. Vengatajalabathy Gobi
    • 2
  • Jean Louis Marty
    • 1
  1. 1.BAE LaboratoryUniversité de Perpignan Via DomitiaPerpignanFrance
  2. 2.Department of ChemistryNational Institute of TechnologyWarangalIndia
  3. 3.Interdisciplinary Research Centre in Biomedical Materials (IRCBM)COMSATS Institute of Information Technology (CIIT)LahorePakistan

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