Detection of SNPs in fish DNA: Application of the fluorogenic ribonuclease protection (FRIP) assay for the authentication of food contents

Momoko Kitaoka, Nobuko Okamura, Hirofumi Ichinose, Masahiro Goto

Research output: Contribution to journalArticle

7 Citations (Scopus)


The fluorogenic ribonuclease protection (FRIP) assay was used to detect single nucleotide polymorphisms (SNPs) in commercially produced fish products. By using fluorescence resonance energy transfer (FRET) between fluorophore and quencher labeled probes, the species-specific cleavage of sample RNA was detected by measuring the fluorescence intensity during the FRIP assay. We were able to discriminate raw and thermally processed eel and tuna species using the FRIP-based SNP detection method. Furthermore, the intensity of fluorescence was correlated with the mutant/wild-type ratio. These results suggest that the FRIP assay is a useful method for the in situ confirmation of labels of fishery foods during food production.

Original languageEnglish
Pages (from-to)6246-6251
Number of pages6
JournalJournal of Agricultural and Food Chemistry
Issue number15
Publication statusPublished - Aug 13 2008


All Science Journal Classification (ASJC) codes

  • Chemistry(all)
  • Agricultural and Biological Sciences(all)

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