冷藏使食物保持新鲜的方法已使用了多年。近数十年来,由于冰箱的大量产销,国外一般家庭和国内的许多地方都普遍地利用冷藏法储存食物。比较容易变坏的食物多数被放入冰箱内低温的“冰格”中保鲜。不过,食物放在冰格内有一个明显现象,就是经过低温储存之后食物由于结冰,而变成硬块,取用时,往往必须经“解冻”的过程,不够便捷。最近,美国一家专营食物处理和加工的 The method of keeping food fresh has been used for many years. In recent decades, due to mass production and sales of refrigerators, refrigerated storage has been widely used by ordinary families in foreign countries and in many parts of the country. Most of the more easily spoiled food is placed in the refrigerator’s low temperature “ice lattice ” in fresh. However, there is an obvious phenomenon that food is placed in the ice tray. After the food is stored at a low temperature, the food becomes lumpy due to icing, which is often inconvenient when it is used. Recently, the United States specialized in food processing and processing