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Title

Amplification of 16S rDNA reveals important fish mislabeling in Madrid restaurants

AuthorsHórreo, José Luis; Fitze, Patrick S. CSIC ORCID ; Jiménez-Valverde, Alberto; Noriega, Jorge Ari; Peláez, María L.
Keywords16S rDNA
Genetic identification
Food control
Fraud
Mislabeling
Species authentication
Issue Date17-Sep-2019
PublisherElsevier
CitationFood Control 96: 146-150 (2019)
AbstractFood fraud encompasses economic fraud and can produce health problems for consumers, as well as conservation problems for the involved species. Nevertheless, few studies tested for mislabeling in restaurants. In this study, we tested for mislabeling of fish species in restaurants. We sampled 77 fish dishes from 53 different restaurants located in 9 different districts of Madrid, Spain. A short fragment of the 16S rDNA was employed for DNA amplification leading to species or genera identification. Results showed that 7 species or genera and almost 30% of the samples were mislabeled. Mislabeling was present in 37% of the sampled restaurants and in 71% of the sampled districts. Mislabeling was common and it was not correlated with a districts economic status (i.e. with the official average square-meter price of apartments). The analyses also showed that some species were more prone to be mislabeled than others.
Publisher version (URL)http://dx.doi.org/10.1016/j.foodcont.2018.09.020
URIhttp://hdl.handle.net/10261/223682
DOIhttp://dx.doi.org/10.1016/j.foodcont.2018.09.020
Identifiersdoi: 10.1016/j.foodcont.2018.09.020
issn: 0956-7135
Appears in Collections:(MNCN) Artículos
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