Advance in Biological Research

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Article http://dx.doi.org/10.26855/abr.2023.06.001

DNA Barcoding Identification Exposes Mislabeled Salted Cod (Gadus spp.) Products Retailedat Porto Alegre, Brazil

Natália da Conceição Noll1, Michele Bertoni Mann2, Ana Paula Guedes Frazzon3, Jeverson Frazzon1,*

1Laboratory of Biochemistry of Microorganisms, Institute of Food Science and Technology (ICTA), Federal University of Rio Grande do Sul (UFRGS), Porto Alegre, Rio Grande do Sul (RS), Brazil.

2Institute of Biosciences (IB), Federal Universityof Mato Grosso do Sul (UFMS), Campo Grande, Mato Grosso do Sul (MS), Brazil.

3Department of Microbiology, Institute of Healthy Basic Science (ICBS), UFRGS, RS, Brazil.

*Corresponding author: Jeverson Frazzon

Published: March 1,2023

Abstract

Fish fraud is a worldwide problem, mainly due to the characteristics of the production chain, which includes prior processing of fish on the ship, in addition to the morphological similarities between species. Salted cod, an important commodity imported into Brazil, is one example in which the fish ends up being morphologically mischaracterized due to both salting processes used for its conservation, and, later, due to handling by retailers. Thus, the aim of the present study was to evaluate legal aspects related to commercialization of salted cod, through the evaluation of sale presentation, label information and species involved. Collected samples were handled by retailers previously to sale. DNA barcode sequencing was used as a molecular tool in order to identify species traded under the name “cod”. The target was the mitochondrial cytochrome c oxidase gene (COI). Labeling problems were observed in 91% of the analyzed products and species substitution was present in 13% of collected samples. Continuous inspection actions on products sold by retailers are important to reduce the occurrence of fraud in salted fish products.

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How to cite this paper

DNA Barcoding Identification Exposes Mislabeled Salted Cod (Gadus spp.) Products Retailedat Porto Alegre, Brazil

How to cite this paper: Natália da Conceição Noll, Michele Bertoni Mann, Ana Paula Guedes Frazzon, Jeverson Frazzon. (2023) DNA Barcoding Identification Exposes Mislabeled Salted Cod (Gadus spp.) Products Retailedat Porto Alegre, Brazil. Advance in Biological Research4(1), 1-8.

DOI: http://dx.doi.org/10.26855/abr.2023.06.001