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Food Analytical Methods

, Volume 6, Issue 5, pp 1278–1283 | Cite as

Determination of Carbendazim in Food Products Using a Sequential Injection Analysis Optosensor

  • E. J. Llorent-Martínez
  • J. Alcántara-Durán
  • A. Ruiz-Medina
  • P. Ortega-BarralesEmail author
Article

Abstract

Carbendazim (CBZ) is a widely used broad-spectrum benzimidazole fungicide used to control plant diseases in cereals, vegetables, and fruits. It has been recently found that it is useful for the control of aflatoxin contamination in chili peppers (Capsicum annuum). In addition, it is useful against other diseases in peppers and tomatoes (Solanum lycopersicum). A flow-through optosensor using C18 silica gel as solid support is here presented for the fluorimetric (λ exc/λ em = 276/306) determination of CBZ in Capsicum powder and dried tomatoes. The proposed system has been developed using sequential injection analysis, so improving the repeatability and automation of the system and minimizing wastes generation. The method presents a detection limit of 3 μg L−1, a sample throughput of 16 samples per hour and interday relative standard deviation lower than 6 %. Taking into account that the maximum residue limit specified in the Codex Alimentarius for dried peppers is 20 mg kg−1, recovery experiments have been carried out for CBZ concentrations in the 15–40 mg kg−1 range, obtaining satisfactory results. Therefore, the proposed method fulfills the current legislation and could be used as an alternative to other analytical methods, such as chromatographic ones.

Keywords

SIA Flow-through optosensor Automation QuEChERS Pesticide 

Notes

Acknowledgments

The authors are grateful to the “Consejería de Innovación, Ciencia y Empresa (Junta de Andalucía),” Project P07-FQM-02673, for the financial support.

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Copyright information

© Springer Science+Business Media New York 2012

Authors and Affiliations

  • E. J. Llorent-Martínez
    • 1
  • J. Alcántara-Durán
    • 1
  • A. Ruiz-Medina
    • 1
  • P. Ortega-Barrales
    • 1
    Email author
  1. 1.Department of Physical and Analytical Chemistry, Faculty of Experimental SciencesUniversity of Jaén, Campus Las LagunillasJaénSpain

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