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Identification of Nile Perch (Lates niloticus), Grouper (Epinephelus guaza), and Wreck Fish (Polyprion americanus) Fillets by PCR Amplification of the 5S rDNA Gene

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Nile perch (Lates niloticus), grouper (Epinephelus guaza), and wreck fish (Polyprion americanus) were differentiated by polymerase chain reaction (PCR) amplification of the nuclear 5S rDNA gene. The design of 3 species-specific primers complementary to the nontranscribed intergenic spacer region from the 5S rDNA molecule allowed amplification of clearly distinguishable gene fragments in each fish species. This approach is rapid and reliable and offers the potential to detect fraudulent or unintentional mislabeling of these species in routine seafood authentication analysis.
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Document Type: Research Article

Affiliations: Universidad Complutense, Facultad de Veterinaria, Departamento de Nutrición y Bromatología III (Higiene y Tecnología de los Alimentos), 28040 Madrid, Spain.

Publication date: 2001-05-01

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  • The Journal of AOAC INTERNATIONAL publishes refereed papers and reviews in the fields of chemical, biological and toxicological analytical chemistry for the purpose of showcasing the most precise, accurate and sensitive methods for analysis of foods, food additives, supplements and contaminants, cosmetics, drugs, toxins, hazardous substances, pesticides, feeds, fertilizers and the environment available at that point in time. The scope of the Journal includes unpublished original research describing new analytical methods, techniques and applications; improved approaches to sampling, both in the field and the laboratory; better methods of preparing samples for analysis; collaborative studies substantiating the performance of a given method; statistical techniques for evaluating data. The Journal will also publish other articles of general interest to its audience, e.g., technical communications; cautionary notes; comments on techniques, apparatus, and reagents.
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