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土豆怎么不会变黑

更新时间: 2020-11-05 00:00:00     

土豆切好用凉水冲泡一下不会变黑,浸泡时间不宜过长,夏天的话要及时换水。土豆切开后容易氧化变黑,属于正常现象,因为其表面有大量的淀粉,在空气中会使土豆的颜色变红变黑,但是不会对人体造成危害。

关键词: 土豆 怎么

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