Brainiac42 wrote:
funeralxempire wrote:
It's cooked so the DNA denatures and can't be identified.
They actually did not state what test they used to determine Tuna in the meat.
“The DNA detection system called polymerase chain reaction (PCR) is very accurate, says Dr Chris Smart from Leatherhead Food Research.
"It is a little bit more difficult with cooked products as you do get a certain amount of denaturing, but actually PCR is pretty sensitive and it would be able to detect DNA present in cooked product.”
I only know as much as the article provides, and I’m sure we’ll know more later. It would be beneficial for them to test other tuna products using the same process, and for us to see where the tuna is coming from.
I do want to add that their tuna has never been my favorite but that proves absolutely nothing.
Here's the story your story is reporting on (the original, or a reposting from Yahoo)
https://www.nytimes.com/2021/06/19/styl ... wsuit.htmlhttps://www.yahoo.com/news/big-tuna-san ... 00822.htmlIt has previously been found to be tuna:
Quote:
To be fair, when Inside Edition sent samples from three Subway locations in Queens out for testing this year, the lab found that the specimens were, indeed, tuna
And denaturing is mentioned as having the potential to interfere:
Quote:
With all testing, there are major caveats to consider. Once tuna has been cooked, its protein becomes denatured, meaning that the fish’s characteristic properties have likely been destroyed, making it difficult, if not impossible, to identify.
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