Unverified85% confidenceDecision RuleTime unknown
冷冻海鲜/牛排看'一次冷冻'还是'解冻再冻'：包装应无冰晶结霜与血水淤积，反复解冻的肉表面暗沉、按压不回弹、汁液流失严重
1
Sources
85%
Confidence
Long-term
Relevance
-
First Seen
Sources
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Unverified生鲜（冷鲜）牛羊肉与冷冻的权衡：冷鲜肉经排酸、口感风味更佳但保质期仅数天；冷冻肉方便囤货但反复解冻会破坏细胞导致'血水'流失变柴。若非当天/次日食用，直接买冷冻优于冷鲜放冰箱冷冻80% similarUnverified鲜羊肉风味和嫩度优于冻肉，但排酸不充分易腥；-18℃急冻锁鲜的冻肉若解冻得当，品质接近鲜肉。反复解冻冻结的羊肉会大量流失汁水、肉质变柴80% similarUnverified买冷冻猪肉优先看是否为冷鲜后速冻而非热鲜肉直冻，速冻锁鲜的肉解冻后无异味、弹性好；有明显氨味或酸味说明冷链断裂过79% similarUnverified冷冻肉解冻后若渗出大量红色汁水（血水）且肌肉松散，说明经历过反复冻融，蛋白质变性、汁液流失严重，鲜度大打折扣；正常冷冻肉解冻后渗液应少且肉质有弹性79% similarUnverified冷冻肉表面出现大量白色冰霜或肉质发白干硬，是反复解冻或冷冻超期（冻烧现象），营养和口感已流失，不建议购买79% similar
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