METHOD FOR KEEPING FRESHNESS OF FRESH FOOD, METHOD FOR PRODUCING SALTY ICE USED THEREFOR, AND SYSTEM FOR KEEPING FRESHNESS OF FRESH FOOD

摘要

PROBLEM TO BE SOLVED: To provide a method for keeping freshness of fresh food, a method for producing salty ice used therefor, and a system for keeping freshness of the fresh food, wherein the influence of osmotic pressure is restrained and chilling refrigeration is rendered feasible by employing slurry ice which is made from salty water having a salinity of from about 0.5 to about 2.5% which equals to or below a sea water concentration, in the method for keeping freshness of fresh food wherein the fresh food, at least in one of the steps from production, harvesting and fishing to distribution, is subjected to icing storage. SOLUTION: The system for keeping freshness of fresh food is constituted of a sea water supply portion 10, a salinity control portion 12, a fresh water adding portion 13, an icemaker 14, an ice storage 15 and a fresh food housing portion 16.