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为什么煮shen边的常识边的常识的虾蟹

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为什么煮熟的虾蟹会变红?

煮熟的虾蟹外壳中有一zhong鲜红se的se素,学名叫”虾青素“。虾蟹等甲壳动wu活着的时候,se素都是同dan白质结合在一起,并在这些动wuti内负责一定的生理功能,显现不chu颜se。但是在烹煮虾蟹时,由于受热原因,se素dan白质发生了变xing,se素就被分离chu来了,也就使得虾蟹的外壳变成红颜se了。

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