February 21, 2006
Which Cut Is Older? (It's a Trick Question)
By MARIAN BURROS
If some of the meat in supermarkets is looking rosier than it used to, the reason is that a growing number of markets are selling it in airtight packages treated with a touch of carbon monoxide to help the product stay red for weeks.
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a package of a conventionally wrapped rib steak and one with the carbon monoxide were both red when bought on Feb. 3 near Washington. They were then kept refrigerated. By Feb. 16, when they were photographed for the pictures that appear with this article, the conventional meat was brown, but the treated meat was still rosy. And as of yesterday, other treated meat bought at the same time was still red despite having been left unrefrigerated on a kitchen counter since Feb. 14.
He emphasized that the agency has never formally approved the gas's use, but rather looked at information provided by the companies and decided not to object.