Why must most milk sold in the U.S. always be refrigerated, while evaporated
canned milk and milk in cardboard containers sold in Europe do not need to be
refrigerated until they are opened?

Question

Accepted Answer

Because
evaporated and shelf-stable milk undergo sterilization, whereas regular milk is
only pasteurized at lower temperatures, requiring refrigeration.

Answer

Because
milk in Europe naturally contains antimicrobial proteins, while U.S. milk does
not.

Answer

Because
milk in the U.S. contains more sugar, which encourages microbial growth unless
refrigerated.

Answer

Because
cardboard packaging  in Europe prevents microbial contamination, unlike glass or plastic
containers in the U.S.

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Why must most milk sold in the U.S. always be refrigerated, while evaporated ca...

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