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过夜的绿豆汤为什么颜色发红
更新时间: 2020-09-26 00:00:00  

绿豆煮后如接触空气,会使其中的某些活性物质发生氧化,颜色由绿变红。煮绿豆汤的时候要避免开盖子,喝的时候再打开比较好。 绿豆汤煮过不久成比绿色,消暑效果好,清热效果差。而长时间煮绿豆,汤的颜色会发浑,消暑效果差,清热解毒效果好。

关键词: 过夜 绿豆 为什么 颜色 发红

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