Thermal profile of 4,4′-dinitrocarbanilide determined by thermogravimetry–differential scanning calorimetry–mass spectrometry (TG–DSC–MS) and pyrolysis–gas chromatography–mass spectrometry (Py–GC–MS)

  • Danniele Miranda Bacila
  • Marcelo Lazzarotto
  • Fabrício Augusto Hansel
  • Gerson Neudí Scheuermann
  • Vivian FeddernEmail author
  • Anildo Cunha Junior
  • Luciana Igarashi-Mafra


Nicarbazin is an anticoccidial used in poultry production. Its residue of concern left in chicken meat is 4,4′-dinitrocarbanilide (DNC) whose content can be reduced through meat thermal processing. Thermal analysis techniques can be considered to elucidate how DNC degradation proceeds. This study aimed to investigate the thermal behavior of DNC using TG–DSC–MS and Py–GC–MS. TG–DSC–MS data showed that DNC decomposition occurs in a single step (252–280 °C) as an endothermic event (ΔH of 670 J g−1). Fragments detected at m/z 43, 44 and 65 indicated the release of isocyanic acid, carbon dioxide and 4-nitroaniline as breakdown products. In addition, Py–GC–MS analysis confirmed that DNC is thermally degraded above 250 °C generating 4-nitrophenyl isocyanate and 4-nitroaniline as the major pyrolysis products. Findings obtained from thermal analysis herein are useful to better comprehend the DNC disappearance after submitting chicken meat to heat processing.


Thermal analysis Residue degradation Nicarbazin Anticoccidial Chicken meat Chemical residue 



This work was supported by the Brazilian Agricultural Research Corporation [Embrapa, Grant No.], National Council for Scientific and Technological Development [CNPq, Grant No. 306930/2016-1] and the Coordination for the Improvement of Higher Education Personnel [CAPES, Grant No. 1533827 to D.M.B.].


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Copyright information

© Akadémiai Kiadó, Budapest, Hungary 2019

Authors and Affiliations

  • Danniele Miranda Bacila
    • 1
  • Marcelo Lazzarotto
    • 2
  • Fabrício Augusto Hansel
    • 2
  • Gerson Neudí Scheuermann
    • 3
  • Vivian Feddern
    • 3
    Email author
  • Anildo Cunha Junior
    • 3
  • Luciana Igarashi-Mafra
    • 1
  1. 1.Departamento de Engenharia QuímicaUniversidade Federal do ParanáCuritibaBrazil
  2. 2.Embrapa FlorestasColomboBrazil
  3. 3.Embrapa Suínos e AvesConcórdiaBrazil

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