DNA Metabarcoding Method for Seafood Identification Developed in Austria

Strategic Insights -

Researchers at the Institute for Food Safety in Austria have developed a DNA metabarcoding method for identifying seafood, particularly crustaceans and cephalopods, in processed foods. The method utilizes a 200-bp DNA barcode of the mitochondrial 16S rDNA to identify and differentiate between various species. The study found that the method is capable of detecting even closely related species and can detect single species in commercial samples as low as 0.003%. However, degraded or low-quality DNA may lead to false-negative results. The researchers believe that this method has strong potential as a qualitative screening tool for food authentication in routine analysis.

Key Takeaways:

  • The DNA metabarcoding method developed by the researchers uses a ~200 bp barcode of the mitochondrial 16S rDNA to identify and differentiate between crustaceans and cephalopods in processed foods.
  • The method can detect even species with a close phylogenetic relationship and can detect single species in commercial samples as low as 0.003%.
  • The researchers observed false-negative results for certain species in DNA extract mixtures, which are likely due to degraded or low-quality DNA.
  • Optimized DNA extraction procedures can prevent false-negative results.
  • The method has strong potential as a qualitative screening tool for food authentication in routine analysis.
  • The research was conducted by Julia Andronache and her team at the Institute for Food Safety in Austria, in collaboration with Margit Cichna-Markl, Stefanie Dobrovolny, and Rupert Hochegger.

Statistics:

  • ~200 bp: The length of the DNA barcode used for identification and differentiation.
  • 0.003%: The lowest amount of single species that can be detected in commercial samples.
  • 14:9: The volume number and issue number of the journal Foods where the research was published.
  • 1549: The page number where the research was published.

Sources:

  • Development of a DNA Metabarcoding Method for the Identification of Crustaceans (* * Malacostraca* * ) and Cephalopods (* * Coleoidea* * ) in Processed Foods. Foods, 2025,14(9):1549. (Foods - http://www.mdpi.com/journal/foods).
  • NewsRx. Researchers from Institute for Food Safety Report on Findings in Food Research [Development of a DNA Metabarcoding Method for the Identification of Crustaceans (* * Malacostraca* * ) and Cephalopods (* * Coleoidea* * ) in Processed Foods]. Health & Medicine Week. May 30, 2025; p 4689.