The CBC has stood by its report, saying Wednesday it tested multiple Subway chicken samples from southern Ontario. The Canadian Broadcasting Corporation (CBC) launched an investigation into the composition of fast food chicken, and released their findings last week. The company did clarify one aspect of its study on the chicken: "DNA tests don't reveal an exact percentage of the amount of chicken in the whole piece, but DNA experts have told Marketplace that the testing is a good indicator of the proportion of animal and plant DNA in the product".
CBC has already rebutted against the rebuttal, too, posting Trent University's original lab report online, and noting that, curiously, only Subway's samples "had significant levels of plant DNA". But the meat they were eating was only approximately 50 percent chicken, according to the DNA researcher who analyzed it.
"Our recipe calls for one per cent or less of soy protein in our chicken products". The study said Subway's sweet onion chicken terriyaki strips were even less, coming in at 42.8 percent.
"Subway has shared the results of the independent tests with "Marketplace" and the lab that conducted the flawed test".
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The CBC is not budging on the results of their study and cited the results of the survey that shows Subway's sample had much higher plant DNA than other samples.
DNA analyses are useful for identifying outright food fraud - like fillets of cheap Asian catfish being passed off as more expensive cod. By way of comparison, there are thought to be about an equal number of human and bacterial cells in the human body.
Subway's chicken breast strips, according to its online listing of ingredients, include: "Boneless skinless chicken breast with rib meat, water, contains 2% or less soy protein concentrate, modified potato starch, sodium phosphate, potassium chloride, salt, maltodextrin, yeast extract, flavors, natural flavors, dextrose, caramelized sugar, paprika, vinegar solids, paprika extract, chicken broth".
Subway did not did not share the DNA analysis with the media, and CBC is standing by its story.