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有时,人们从电冰箱里取出的冷冻食品或者从市场上购回的冷冻食品,如冻鱼、冻肉、冻虾、冻禽等,解冻后一时食用不完又重新放入电冰箱里再次冷冻贮藏。实际上这种做法存在着以下弊病: 1.降低食品的新鲜程度和营养成分 当冻鱼、冻肉等食品从低温的冷冻状态恢复到冰点以上的解冻状态,其细胞膜遭受到较为严重的损伤,细胞液大量流失。因此,重新再冷冻的食品,其新鲜程度就较原来状态有较大幅度的下降,营养成分损失较多,影响食品原有的鲜度和风味。
Sometimes frozen foods taken from the refrigerator or frozen foods bought back from the market, such as frozen fish, frozen meat, frozen shrimp, frozen poultry, etc., can not be consumed after thawing, and then re-frozen in a freezer Storage. In fact, this approach has the following drawbacks: 1. To reduce the freshness of food and nutrition ingredients When frozen fish, frozen meat and other foods from the frozen state to restore the freezing point above freezing point, the cell membrane suffered more serious damage, Large amount of cell fluid loss. Therefore, re-frozen food, its freshness than the original state has a more substantial decline in the loss of more nutrients, affecting the original freshness and flavor of food.