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虾变红了还能吃吗

更新时间: 2020-11-16 00:00:00     

生的虾变红了不能吃。不管是鲜活的虾或是冷冻的虾,肉质发红是不正常的。虾被初加工后放在室温下,颜色会发生变化,由淡青、浅灰、浅橙变成橘红色。虾在常温下的颜色变化,说明新鲜程度在下降,虾肉变为红色后就不能再食用了。

常温下生的虾肉变成红色,是由于肉质受菌类侵袭而出现脂肪酸败后的氧化产物和蛋白质质变所致。也即虾死亡后,肌肉内部氧气不足,生成还原性肌红蛋白,使死后肌体呈现红色。

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