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Título: | Solid phase microextraction as a methodology in the detection of irradiation markers in ground beef |
Autor: | Caja, Maria del Mar; Ruiz del Castillo, M. Luisa CSIC ORCID ; Blanch, Gracia Patricia CSIC ORCID | Fecha de publicación: | 2008 | Editor: | Elsevier | Citación: | Food Chemistry 110(2): 531-537 (2002) | Resumen: | The usefulness of solid phase microextraction (SPME) to detect the occurrence of the irradiation markers 2-dodecylcyclobutanone (2-DCB) and 1,3-bis(1,1-dimethylethyl)benzene in irradiated ground beef was evaluated. To that aim, beef samples were irradiated with different irradiation doses and subsequently examined together with non-irradiated beef samples used as control samples. The SPME conditions applied were selected as a result of performing an optimization process including different fibers (PDMS, DVB/CAR/PDMS, polyacrylate and PDMS/DVB), as well as extraction times (10, 25 and 40 min) and temperatures (40 and 60 °C). For comparison, 2-DCB and 1,3-bis(1,1-dimethylethyl)benzene were additionally identified in some of the samples by steam distillation–solvent extraction (SDE). Although this study is a preliminary work, from the results obtained SPME seemed to be a rapid and valuable technique to determine 2-DCB and 1,3-bis(1,1-dimethylethyl)benzene in ground beef subjected to irradiation, offering advantages over other methods reported in the literature. In addition, SPME allowed to confirm the validity of 2-DCB as an useful marker to distinguish non-irradiated from irradiated ground beef. On the contrary, the occurrence of 1,3-bis(1,1-dimethylethyl)benzene was however established in both types of samples by SPME and SDE. | Versión del editor: | https://doi.org/10.1016/j.foodchem.2008.02.024 | URI: | http://hdl.handle.net/10261/243862 | DOI: | 10.1016/j.foodchem.2008.02.024 | ISSN: | 0308-8146 |
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