Data/hora: 17/06/2024 02:24:46

Biblioteca(s): | Embrapa Florestas; Embrapa Suínos e Aves.
Data corrente: | 12/09/2019
Data da última atualização: | 03/10/2019
Autoria: | BACILA, D. M.; LAZZAROTTO, M.; HANSEL, F. A.; SCHEUERMANN, G. N.; FEDDERN, V.; CUNHA JUNIOR, A.; IGARASHI-MAFRA, L.
Afiliação: | Danniele Miranda Bacila, UFPR; MARCELO LAZZAROTTO, CNPF; FABRICIO AUGUSTO HANSEL, CNPF; GERSON NEUDI SCHEUERMANN, CNPSA; VIVIAN FEDDERN, CNPSA; ANILDO CUNHA JUNIOR, CNPSA; Luciana Igarashi-Mafra, UFPR.
Título: | Thermal profile of 4,40' dinitrocarbanilide determined by thermogravimetry differential scanning calorimetry mass spectrometry (TG DSC MS) and pyrolysis gas chromatography mass spectrometry (Py GC MS).
Ano de publicação: | 2019
Fonte/Imprenta: | Journal of Thermal Analysis and Calorimetry, v. 138, n. 1, p. 697-701, Oct. 2019.
DOI: | 10.1007/s10973-019-08194-9
Idioma: | Inglês
Conteúdo: | Nicarbazin is an anticoccidial used in poultry production. Its residue of concern left in chicken meat is 4,40 -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 (DH 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.
Palavras-Chave: | Análise térmica; Anticoccidial; Chemical residue; Residue degradation.
Thesagro: | Carne; Frango; Resíduo Quimico.
Thesaurus Nal: | Chicken meat; Nicarbazin; Thermal analysis.
Categoria do assunto: | X Pesquisa, Tecnologia e Engenharia
Registro original: | Embrapa Florestas (CNPF)

Exemplares:

CNPF - (56952-1) - UPC - AP - DD -  -  -  - DIS
CNPSA - (21660-1) - UPC - AP - DD -  -  -  - DIS