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DNA Testing for Food

February 20, 2013

In the wake of the horse meat scandal, European authorities are asking for meat samples to undergo DNA testing to detect any contamination, but, as the Wall Street Journal reports, testing may not prevent another incident. Testing, it adds, may not catch all contaminants, and it is expensive.

"If a sample is mixed (contains DNA from more than one species) then sequencing for the unknown is not possible," Angela Bromley, the general manager of Genon Laboratories, which performs meat testing, says.

And, the Journal adds, broadening the scope of testing becomes expensive — each test, it says, costs about €400, or approximately $535. "You have to concentrate your resources where the intelligence is, and right now the problem is pork and horse," spokesperson from the UK's Food Standards Authority says.


That is nonsense. One

Submitted by Biotreker on Wed, 02/20/2013 - 17:38.

That is nonsense. One doesn't need a whole genome sequence, or a whole exome sequence or even a 13 marker STR panel to tell the difference between a horse and a cow. Since sample amount is not limiting, one could test a batch with direct hybridization to rRNA for a few tens of dollars, fully loaded, and no doubt put together a species specific immunoassay for a cost of a few dollars per sample.

have a look at the page :

Submitted by sm on Wed, 02/20/2013 - 19:01.

have a look at the page : Genetic Inspection of Food | Rapid Meat Species Identification

http://www.shimadzu.com/an/industry/foodbeverages/genome0104005_2.html

the solution is there !

Better still if crude lysate

Submitted by Biotreker on Fri, 02/22/2013 - 15:44.

Better still if crude lysate sample prep is sufficient.

The Shimadzu assay detects

Submitted by marilyn.smith on Mon, 02/25/2013 - 16:03.

The Shimadzu assay detects the other species, but not quantitatively.

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