Advanced search
Start date

Evaluation of the application of electric potential in solid phase extraction for the determination of sulfonamides in eggs by HPLC-DAD and LC-MS/MS

Grant number: 12/11401-3
Support type:Scholarships in Brazil - Doctorate (Direct)
Effective date (Start): August 01, 2012
Effective date (End): July 31, 2014
Field of knowledge:Agronomical Sciences - Food Science and Technology - Food Science
Principal researcher:Felix Guillermo Reyes Reyes
Grantee:Cyntia Cabral Ribeiro
Home Institution: Faculdade de Engenharia de Alimentos (FEA). Universidade Estadual de Campinas (UNICAMP). Campinas , SP, Brazil


Sulfonamides are widely used as veterinary drugs for prevention and treatment of diseases in poultry production. Residues of these drugs can be accumulated in eggs and may represent a risk to food safety.Eggs are complex biological matrix and significant amounts of interferents can impair the determination of the compounds of interest by high performance liquid chromatography (HPLC), especially when they are at ppb levels. Among the various techniques of sample preparation that can eliminate interferents and concentrate the analyte of interest, the solid phase extraction (SPE) is known for its efficiency, robustness, selectivity and low solvent consumption. However due to the complexities of the matrix and the low concentration of analytes, the establishment of SPE extraction methods with high extraction efficiency of the analyte and minimal interference is still a challenge in residue analysis. The present project aims to evaluate the sample preparation using solid phase extraction with and without application of electric potential (E-SPE®) for the determination of sulfonamide residues in eggs by high performance liquid chromatography combined with a photodiode array detector ( HPLC-DAD) and a mass spectrometry in tandem (LC-MS/MS). The application of electrical potential during the procedure aims to increase the extraction efficiency associated with the elimination of interferences as compared to conventional SPE by the generation of an electric field in the cartridge bed. For this purpose both extraction and electrophoretic parameters will be evaluated in order to obtain the optimization of the process. In addition, the method to determine sulfonamide residues in eggs by E-SPE HPLC-DAD will be validated and the elimination of matrix interferences will be assessed in relation to the effects of signal suppression or enhancement in the LC-MS/MS. The application of electric potential in SPE (SPE-E®) is an innovative procedure that has shown promising results that were the basis for the patent obtained by the research group Paracelsus also has demonstrated positive results for sulfonamides. (AU)

News published in Agência FAPESP Newsletter about the scholarship:
Articles published in other media outlets (0 total):
More itemsLess items

Scientific publications
(References retrieved automatically from Web of Science and SciELO through information on FAPESP grants and their corresponding numbers as mentioned in the publications by the authors)
RIBEIRO, CYNTIA CABRAL; ORLANDO, RICARDO MATHIAS; RODRIGUES ROHWEDDER, JARBAS JOSE; REYES REYES, FELIX GUILLERMO; RATH, SUSANNE. Electric field-assisted solid phase extraction and cleanup of ionic compounds in complex food matrices: Fluoroquinolones in eggs. Talanta, v. 152, p. 498-503, . (12/11401-3, 08/03064-1, 13/09543-7, 08/57808-1)
Academic Publications
(References retrieved automatically from State of São Paulo Research Institutions)
RIBEIRO, Cyntia Cabral. Evaluation of the application of electric potential in solid phase extraction for the determination of sulfonamides and fluoroquinolones in eggs. 2014. Doctoral Thesis - Universidade Estadual de Campinas (UNICAMP). Faculdade de Engenharia de Alimentos Campinas, SP.

Please report errors in scientific publications list by writing to: