what is M.A.P. in regards to meat?!
it seems to be along the lines of cryovaced
Answers:
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Modified Atmosphere Packaging (MAP) For Retail Displays of Fresh Meat
The rates of oxidation and decomposition can be slowed by the use of barrier films and various gas combinations in modified atmosphere packaging (MAP), but radiation from retail lighting, especially UV radiation but also visible spectrum radiation, can still initiate oxidation and spoilage as all wavelengths of light penetrate clear packaging to some extent.
http://www.promolux.com/english/retail_m…
Meat that has been treated with carbon monoxide to preserve the red color