Why Don't Aseptically-packaged Products Need to be Refrigerated?
Refrigeration serves to slow or prevent the growth of microorganisms in the product.
Products that are aseptically processed are commercially sterilized to kill harmful microorganisms. These products are filled into a sterilized package using a sterile filler.
Since both the product and package have been sterilized, the sealed package is shelf-stable and refrigeration is not required.