The method, in order to prepare the packaging of the sterilized mineral water as well as a packaged, sterilized mineral water

摘要

Sterilized and packaged mineral water comprises sterilized mineral water having a hardness of not less than 50 mg/ℓ and a content of dissolved carbonic acid gas ranging from 9 to 30 mg/ℓ (as calcium carbonate) and a number of bacteria of not more than 10 ⁻³/m ℓ which is obtained by sterilizing pumped-up mineral water having a hardness of not less than 50 mg/ ℓ and a content of dissolved carbonic acid gas ranging from 10 to 31 mg/ ℓ by filtering through a filter having a pore size of not more than 0.22 µ m. The packaged and sterilized mineral water can be effectively prepared by a method which comprises packaging pumped-up mineral water in a container without subjecting it to any heat-sterilization treatment wherein the mineral water is sterilized by passing through a filter having a pore size of not more than 0.22µ m, packaged in a sterilized container under an aseptic condition of not more than Class 100 and then the container is airtight-sealed. Thus, packaged and sterilized mineral water having excellent keeping quality can be obtained without subjecting pumped-up mineral water to any sterilization by heating and without using any antibacterial agent and it has a high hardness and a high carbon dioxide content as well as good taste peculiar to the original mineral water.